Re: [Elecraft] K3 or SDR-5000?

[Dale Boresz]

This is not accurate.

I am simultaneously running a FLEX-5000A and an SDR-1000 (w/Delta44 
soundcard) with two separate instances of PowerSDR on an 'old' Pentium 
P4 3.0 GHz machine running XP-Pro.


CPU usage with *both* radios running averages 33% (as viewed by the 
Performance monitor:  Start > Control Panel > Administrative Tools > 
Performance).  The FLEX-5000A contributes about 17% and the SDR-1000 
about 16% .


73, Dale
WA8SRA


R. Kevin Stover wrote:



One thing that might not have been mentioned in the K3/Flex discussion
is the need for a high performance PC. The $399 HP/Dell/Whoever
"special" at Sam's Club or Costco just won't cut it.



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Re: [Elecraft] Audio Thump

[Dale Boresz]

Hello Jimmy,

I know exactly what you're referring to, and it is not due to the KDSP2, 
or the KAF2. It is there on the bare-bones K2, although it is primarily 
audible when using headphones capable of very wide frequency response. I 
have several pairs of various models of Grado headphones, as well as a 
pair of Beyerdynamic DT-990's, and the thump is noticeable on all. In 
fact, I can also hear a 'click' as well as a thump.


I've been wanting to investigate this myself, but haven't found the time 
to do so yet. I've temporarily reduced it to the point where it's a lot 
less noticeable by placing the series combination of a 3.3 uF cap and 
220 ohm resistor in line with the headphones, and shunting across the 
headphones with a .47 uF cap. The series 3.3 uF will help to reduce the 
'thump' by reducing the low-frequency response, and the shut .47uF will 
roll off the high frequencies, thereby reducing the 'click'. It's still 
not perfect, but it's a lot better than it was. You may have to play 
with these values depending upon the characteristics, and impedance of 
your headphones.


Of course a much easier solution is to just use a pair of cheap 
headphones, similar to the ones that come with a portable cd player, 
(especially since you're ruining the response anyway by inserting the 
caps and resistor) but in my case the comfort level of the Beyerdynamics 
is enough of a reason to go through the little bit of extra trouble.


73, Dale / WA8SRA


Jimmy Lee wrote:


When I use headphones I have a" thumping" sound everytime I key the rig.
(seems worse on wide range headphones, lots of bass response really
shows this "thumping" sound)  Is this common and what is the fix?
Thanks,
Jimmy, AE4DT
K2  #2832

 



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Re: [Elecraft] K2 S Meter

[Dale Boresz]

Hello Jean-Francois,

Also, be sure that the AGC is in fact turned ON. To be certain that it's 
on, simply tap the AGC button once. If it was previously off, that will 
turn it on, and if it was on already, it will simply change the AGC 
time-constant from either fast to slow, or the other way around.


If you are concerned that you never see more thatn one of the S-Meter 
LED's lit at a time, then you most likely have the "DOT" mode selected, 
as opposed to the "BARGRAPH" mode. To change it, locate the "GRPH" menu 
item on the Primary Menu. You'll notice three possible settings for GRPH:

bAr (Bargraph)
OFF (No S-Meter LED's will be displayed)
dOt (Only a single LED at a time will be displayed, as a power-saving 
feature)


If you select "bAr" you should see all S-Meter LED segments lit when the 
right-most LED is lit.


Hope this helps.

73, Dale / WA8SRA

JEAN-FRANCOIS MENARD wrote:

Be sure to turn the RF Gain fully clockwise and counterclockwise as 
describe in the manual when ajusting S Lo and S Hi.


Le 04-07-02, à 23:57, David N. a écrit :


Hello all I am at the test 1 phase of the build
The problem I am having is that when I set the Slo or
SHi the far right dot is the only one lighting up.
It says in the manual that (Slo) the far left led
and it is on 10. I double checked my agc and it is at
3.80 so that is not in question is there something
I am overlooking?? if so what? or am I looking at a
mistake in one of my steps?
Thanks
David KR4OW





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Re: [Elecraft] K2 S Meter

[Dale Boresz]

Sorry, yes I realized that shortly after sending it, but figured David 
would still see it. I need to be more careful when looking at the 
hierarchy of messages... :-)


73, Dale / WA8SRA

JEAN-FRANCOIS MENARD wrote:


It's not me that have problem... it's David KR4OW

Mine works fine, really fine !!!

Le 04-07-03, à 15:41, Dale Boresz a écrit :


Hello Jean-Francois,

Also, be sure that the AGC is in fact turned ON. To be certain that 
it's on, simply tap the AGC button once. If it was previously off, 
that will turn it on, and if it was on already, it will simply change 
the AGC time-constant from either fast to slow, or the other way around.


If you are concerned that you never see more thatn one of the S-Meter 
LED's lit at a time, then you most likely have the "DOT" mode 
selected, as opposed to the "BARGRAPH" mode. To change it, locate the 
"GRPH" menu item on the Primary Menu. You'll notice three possible 
settings for GRPH:

bAr (Bargraph)
OFF (No S-Meter LED's will be displayed)
dOt (Only a single LED at a time will be displayed, as a power-saving 
feature)


If you select "bAr" you should see all S-Meter LED segments lit when 
the right-most LED is lit.


Hope this helps.

73, Dale / WA8SRA

JEAN-FRANCOIS MENARD wrote:

Be sure to turn the RF Gain fully clockwise and counterclockwise as 
describe in the manual when ajusting S Lo and S Hi.


Le 04-07-02, à 23:57, David N. a écrit :


Hello all I am at the test 1 phase of the build
The problem I am having is that when I set the Slo or
SHi the far right dot is the only one lighting up.
It says in the manual that (Slo) the far left led
and it is on 10. I double checked my agc and it is at
3.80 so that is not in question is there something
I am overlooking?? if so what? or am I looking at a
mistake in one of my steps?
Thanks
David KR4OW





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[Elecraft] OT: Transceiver Clinic at the 11th International EME Conference

[Dale Boresz]

Folks,

A good friend who is involved in VHF/UHF weak-signal work, forwarded 
this to me, and I pass it on for anyone else who may be interested. Joe 
Taylor K1JT, the author of the original message, wrote the WSJT 
application which is used extensively in weak-signal work.


See original message below ...

73, Dale / WA8SRA

-Original Message-
From: Joe Taylor [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 08, 2004 10:09 AM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED];
[EMAIL PROTECTED]
Subject: [HSMS/JT] Transceiver Clinic at the 11th International
EMEConference


Dear EME and VHF/UHF Friends,

As you probably know, the 11th International EME Conference will be held
on August 6-8, 2004, at The College of New Jersey. The Conference is
open to all radio amateurs interested in EME and other weak signal
communication at VHF, UHF, and microwave frequencies.

A special feature  at this year's conference will be a "Transceiver
Clinic."  Leif Asbrink, SM5BSZ, will run a number of commercial radios
through a battery of tests designed to establish their strengths and
weaknesses. Transmitter tests will include spectral purity under
constant carrier, hand-keyed CW, and normal voice SSB operation;
receiver tests will include noise figure, dynamic range, and reciprocal
mixing characteristics.  Tests will be made using Linrad (Leif's
extremely capable software defined radio) as a high dynamic range
spectrum analyzer, as well as conventional signal generators, spectrum
analyzers, etc.

Find out how well your radio stacks up against others!  Learn which ones
are unusually susceptible to QRM from nearby strong signals when
receiving, or may produce strong out-of-channel interference to others
when transmitting.

There will also be opportunities to sit down and play with Linrad as an
on-the-air receiver.  Linrad is an extremely powerful tool for many
communication tasks, and especially for EME.

If you bring a radio to be tested, we will need:

1. The radio and an operator who is familiar with it.
2. DC power cord, if required.
3. The microphone that came with the radio.
4. Optional: connector or cable for the ALC port and the User Manual.

A 13.8 V DC power supply and dummy load will be available.  It will be
helpful if you let us know in advance what radio(s) you will bring for
testing.

Details on the EME Conference, including registration forms, can be
found at http://www.qsl.net/eme2004.

Feel free to pass this message on to other interested amateurs or to
post it on other reflectors.

-- 73, Joe, K1JT



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Re: [Elecraft] Your favorite bands

[Dale Boresz]

Favorite amateur radio band: 20m (cw)
Reasons:
- An effective antenna, even a directional one, does not need to be 
prohibitively large or heavy. (my Hex Beam weighs about 7 pounds, and 
has a turning radius of a little over 9 feet). Have also had success w/ 
vertical dipoles, and ground planes.

- Lots of propagation surprises, even when condx. are less than optimal
- Overall band noise is quite low (compared to the lower bands such as 
30m, 40m, and 80m)

- The band is generally open to both dx and stateside simultaneously
- Wide range of skill levels of cw op's keeps things interesting
- Reasonably active band, and pretty easy to stir up an interesting qso
- A decent bit of QRP activity

30m band is a fun band as well, but (at least at this qth) lots of 
strange non-ham radio signals chewing up major segments of the band 
during the evening hours. But a simple antenna such as a sloper or 
dipole, can work very well on this band.



Other favorite 'Bands' ...
Orford String Quartet
   for: Beethoven string quartets

Cleveland Orchestra w/ George Szell
   for: Beethoven symphonies and piano concertos

Academy of Ancient Music w/ Christopher Hogwood
   for: Beethoven symphonies, played with period instruments

North German Radio Symphony Orchestra w/ Gunter Wand
   for: Brahms and Bruckner symphonies

Concertgebouw Orchestra  w/ Bernard Haitink
   for: Shostakovich symphonies


73, Dale / WA8SRA

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[Elecraft] All about the sun

[Dale Boresz]

For those who may be interested...

There's an outstanding feature article in the July 2004 issue of 
National Geographic Magazine, about the sun. The article presents what 
is known about the causes and effects of coronal mass ejections, solar 
storms, the sunspot cycle, etc., and, in typical National Geographic 
fashion, contains some incredible photos. Very interesting reading.


73, Dale / WA8SRA

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Re: [Elecraft] K2 Ser no. 3181

[Dale Boresz]

Hello Ron,

Your AGC threshold has a huge effect on  the range of adjustment of the 
RF gain control. If the AGC threshold is set too high - meaning that you 
are generally operating with very little AGC action - your RF gain 
control will have very little effect. If you lower your threshold, 
you'll find that the RF gain control will have a much greater effect.


Just a reminder, R1 on the control board is what controls this 
threshold, and in the K2 manual, the information relating to this 
adjustment is located right next to the info about the S-meter 
alignment. (page 46 in my Rev D manual for S/N 3039, so it's probably 
the same version as yours).


Hope this helps.

73, Dale / WA8SRA

Ron Lorenz wrote:


Love this little rig. One slight (mini) probem. Based on over 50 years of
radio operating, amateur, commercial and military I always leave the RF gain
on max for best SNR.

With my K2, turning the control to any position, (max to min and back agin)
makes no difference in gain (Noise) except to shift the position of the S
meter reading, ie, iaw the HI and LO Cal procedure.

Any ideas?

73

Ron VA6RL

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Re: [Elecraft] K2 receiver problem

[Dale Boresz]

Hello Gerhard,

First, do the AGC threshold adjustment (instructions located at end of 
Assembly, Part I in the manual)


Then do the S-Meter Alignment, the instructions of which follow the AGC 
threshold adjustment instructions.


It sounds like the AGC is set a bit too aggressively at the moment.

73, Dale
WA8SRA

GS wrote:


Hi list,

got a K2 from another OM on my workbench. It's got a
receiver problem and I just want to make sure I do the
checks in the correct order and I'm looking for hints,
if available!

Thanks in advance!

So here's the problem and what I want to do. It seems
the receiver runs with "handbrake on". So the s-meter
shows 3 bars without an antenna but the rf gain is
fully clockwise. I can reduce signals to zero (using
RF gain) with this K2 which I can't using my own K2.
So mine has a higher sensitivity.

Any idea what's wrong?

What I want to do:
- s-meter alignment
- I.F. amplifier alignment
- (maybe band pass alignment)
- signal tracing receiver and synthesizer

Kind regards

Gerhard
DH3FAW







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Re: [Elecraft] Re: New Icom XCVR IC-7700

[Dale Boresz]

Benny Aumala wrote:

Radio looks great, it is big, even heavy.
200Watts and AC supply inside.
Even Panadapter there.
Sure a fine piece of gear. Price tag??
But still upconversion.
The only two downconverted modern rigs seem to be Orion and K3.

... and the FlexRadio SDR-1000, FLEX-5000A, FLEX-5000C, FLEX-5000D

I already ordered a SoftRock v6 lite to be a PanAdapter for K3.
(Ask for 11 MHz crystal).

Benny OH9NB

73, Dale
WA8SRA

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Re: [Elecraft] SDR UI

[Dale Boresz]

If an SDR radio needed to be tuned like a radio with a knob-based 
user-interface, then tuning via any kind of computer interface would (to 
me) be a chore, and at the very least, not much fun.


However -- if you've ever used the PowerSDR console with either the 
SDR-1000 or the SoftRock, then you know that having the ability to see 
many signals in the panadapter, well outside of the current filter 
bandwidth, and being able to click on any one of those signals and have 
it immediately centered in your passband (in the case of a cw signal) is 
a fantastic way to operate. The most direct way to do that is via a 
simple mouse click. Fine-tuning around that point is easily accomplished 
via the mouse wheel (on which you'd already have your hand), or an 
actual knob connected to the computer via a USB port.


Operating an SDR (Software *defined* radio) radio with a high-resolution 
panadpator display is vastly different than operating a Software 
*controlled* radio, or a 'standard' radio with knobs and switches. 
Remember, without a panadapter, you have to hear a signal in order to 
find it. With an SDR radio, you'll *see* stations well before you hear 
them -- and hearing them is a single mouse-click away.


Fun stuff, these panadapters!

73, Dale
WA8SRA
K2 S/N: 3039


Craig Rairdin wrote:

Flex 5000:  GREAT specs, zero radio-ness.  One method of "tuning the
band" is to use a "hand tool" (like you use on a pdf file) and you
"pull" the band across your display (like Goole Maps).  Very, u,
different.  User interface (tactile) is all but lacking.  
  


  
Just get three of those sexy USB knobs. There should be a way to bind  
them to the various knob-functions in software.



This is one of the problems I have with the whole SDR concept. I don't quite
understand the attractiveness of a radio where the UI has just been ignored
or placed onto a device that is not really designed for the task.

It's like they're saying "We're smart enough to do all this great RF design
but we just can't handle the human interface. (In fact we'll even leave a
lot of the RF design up to you.)" The PC is a non-optimum (but convenient)
UI for many of the things we ask it to do. This is definitely one of them.
When you have to start adding physical knobs and switches it seems obvious
to me that you're admitting that you're trying to use the wrong tool for the
job.

For example, I'm a pilot and when I do my recurrent training we don't use
Microsoft Flight Simulator even though it does an excellent job of
simulating real flying characteristics. We get inside a big box that has a
mock-up of a real instrument panel and real flight controls. The designers
of these devices know that clicking a button with your mouse on a picture of
a panel isn't the same as pressing the real button on a real panel.

I'm just not impressed with a product that does a half-baked job of UI
design.

Craig
NZ0R

  


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Re: [Elecraft] #6107 - First Snag

[Dale Boresz]

One of the most clever recommendations that I remember from those 
discussions a few years ago was to wrap a few turns of wire from one 
bail end to another and insert a short rod of some type and twist it 
"tourniquet style" to slowly draw the ends inward until they are drawn 
together enough to allow it to be attached.


Or -- you could dispense with the bail altogether (as I did) and cobble 
together some taller 'feet' for the front of the radio so that the front 
sits up about an inch or a little more above the surface upon which it 
is resting. May not be too good for portable use, but for home use on a 
desktop it works very well.


73, Dale
WA8SRA
K2 #3039

Mark Bayern wrote:

IMO, the bail is the most difficult piece of the assembly.

I used longer screws while assembling the thing and then changed them
out, carefully!, one at a time to screws of the correct length.

There were some great discussions on the forum a few years ago about
the tilt bail. Lots of different ideas about how to get the blasted
thing installed. A check of the archives might give you some ideas ...
certainly it will give you a few laughs, and you won't feel like the
only cave-man in the forum.

Mark   AD5SS
K/2  5340



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Re: [Elecraft] which do you prefer?

[Dale Boresz]

By a wide margin, the KDSP2; far more versatile, especially when it 
comes to digging the really weak ones out of the noise. The KAF2 works 
great as well -- but as a peaking filter, which by it's nature, 
increases ringing. The KDSP2, in addition to having adjustable levels of 
aggressiveness for noise reduction , also offers very narrow filters, 
with the ability to set a a 'hard' or 'soft' character. Both products 
work extremely well for their intended purpose; I just like having the 
extra tools of the KDSP2 at my disposal when the going gets rough.


Just my $0.02 worth ...

73, Dale
WA8SRA
K2, SN 3039

jpgabbard wrote:

If you prefer CW which filter would you chose?
 the KDSP2 or the KAF2?. Thanks, John  KF7OM
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Re: [Elecraft] K3 Noise Blanker ahead or behind roofing filter?

[Dale Boresz]

Hello Brett,

Sorry, this is a little off topic, but ...

Shunting loudspeaker terminals on an amplifier (or at the loudspeakers 
themselves) may cause instabilities with some amplifiers due to phase 
shift, causing them to break into oscillation well out of hearing range, 
resulting in possible failure of the output transistors (at the very 
least), and some embarrassment and expense to the applicator  :-)


It's usually more effective (and will not cause any instabilities to the 
amplifier) to place ferrite beads over the individual wires or over the 
pair of wires (whichever works best) as near to the loudspeaker 
terminals on the amplifier/receiver as possible.


Sometimes, due to the size of the connector terminals at the ends of the 
wires, it is not possible or practical to fit a ferrite bead over the 
wire. In those instances, you can obtain some split cores from Radio 
Shack, Mouser, Digi-Key, etc. that will allow you to wrap several turns 
of wire around half of the ferrite core that is temporarily opened, 
after which you can close it again. Keep adding more of these devices 
until you no longer have a problem.


73, Dale
WA8SRA


Brett gazdzinski wrote:

 Some caps across the speaker outputs cured it
totally!

Brett
N2DTS

  


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Re: [Elecraft] K2 and DSP

[Dale Boresz]

I agree completely. Wouldn't be without it!

73, Dale
WA8SRA

Robert Tellefsen wrote:

To the contrary, John.
The KDSP2 does several things for you.
The obvious cw filtering, additional audio
gain, and the Noise Reduction that you
only get with a DSP unit.  Mine is
switched in all the time.  Great unit.
73, Bob N6WG

- Original Message - 
From: "John Reilly" <[EMAIL PROTECTED]>

To: 
Sent: Tuesday, July 31, 2007 10:19 AM
Subject: [Elecraft] K2 and DSP


  
I notice no mention in the Reflector about the DSP module in the K2. 
Furthermore, I never see a K2 equipped with DSP for sale.


Is there a reason that the DSP module is not popular in the K2?

  - 73, John, W0JFR
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Re: [Elecraft] K2 AGC, Seems a bit soft

[Dale Boresz]

I completely agree about the K2's great sounding AGC. The fact that 
there *is* some slope to the AGC to still allow the perception of 
various signal levels while still maintaining control, is a testament to 
the radio's excellent dynamic range. IMHO, it actually reduces listening 
fatigue by  not excessively raising the noise floor for weak signals.


73, Dale
WA8SRA

Darwin, Keith wrote:

Yes, Paul the K2's AGC is definitely "soft".  Soft in that it has some
slope to it with quiet signals sounding quieter than loud.

And I love it that way.  In fact that is one of a handful of factors
that make the K2 such a sweet sounding radio and such a pleasure to
listen to.  I've had rigs (good rigs) with hard AGCs and they leave me
feeling assaulted after a whle under the headphones.

Obviously, this is only my opinion, and YMHV (your mileage has varied) -
but in my book the K2's AGC is top notch.

73!

- Keith N1AS -
- K2 5411.ssb.100 -

-Original Message-

While some folks like a slightly soft AGC in the receiver, I'm one of
those folks that finds that soft signals received softer than loud
signals (especially SSB) is tiring. I prefer a very stiff and level AGC.
Mind you, this has nothing to do with the fast/slow delay rates or
anything along those lines.

-Paul Pollock KD7BWB
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Re: [Elecraft] More fun with short linear loaded wires and the KXAT1

[Dale Boresz]

Hello Michael,

I've experimented quite a bit with linear loaded vertical dipoles, and 
found that placing capacitance hats at both ends helps a lot. Not only 
does it lower the resonant frequency for a given length of wire, but it 
also raises the radiation resistance so the antenna will be more efficient.


Maybe you could try something like back-to-back telescoping antennas 
tied to the top of the wire, such that they balance out and remain 
somewhat horizontal.


Have fun!

73, Dale WA8SRA

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Re: [Elecraft] k2 cw-cw reverse tones are different

[Dale Boresz]

Would just like to add that it's also important to have the signal of 
interest zero-beat with respect to the bfo frequency *before* switching 
between CWn and CWr. Failing to do so will guarantee that the normal and 
reverse pitches will not be the same (assuming everything else is set up 
properly).


73, Dale WA8SRA

Ron D'Eau Claire wrote:


Tom, KM4CU wrote:

A long time issue for me is the difference in the pitch of cw normal and cw
reverse, they are different. I have set bfo setting several times with no
difference.

--

How different Tom? 


The K2's logic design allows for an error of up to 20 or 30 Hz, just like
all the other BFO settings. That was tradeoff with cost and complexity.
Getting the BFO frequency settings predictably closer would have involved
substantially more of both  


All that's happening when going between CWn and CWr is the BFO frequency is
being changed. It's identical to what goes on as you step through the
various filter bandwidths.

Also, like the other filter settings, you *must* set up the BFO frequencies
while watching a noise display on Spectrogram, or at least not trying to
adjust the tone listening to a signal. The local oscillator and beat
frequency oscillators interact, which will defeat any attempts to "tweak"
the tones while actually listening to a signal.  


Ron AC7AC

-
 



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Re: [Elecraft] OT: Astron RS-35M Transformer Hum

[Dale Boresz]

I have a stack of QST magazines from 1996 resting on top of my Astron
VS-35M. No transformer hum at all!

Have not tried magazines from any other years, so YMMV...

73,
Dale - WA8SRA

On Fri, Apr 24, 2020 at 4:09 PM Nate Bargmann  wrote:

> * On 2020 24 Apr 11:50 -0500, inventor61 . wrote:
> > If someone has a better idea than mine for making these, I am all ears.
>
> No better idea.  I've read in times past of someone sandwiching some
> compressible material between the transformer and the supply top cover
> to quell or reduce the hum.  I have an RM-50M that hums in this manner
> and fortunately it is not loud enough to keep me from listening to the
> K3 at about 8 o'clock with external speakers.
>
> 73, Nate, N0NB
>
> --
>
> "The optimist proclaims that we live in the best of all
> possible worlds.  The pessimist fears this is true."
>
> Web: https://www.n0nb.us
> Projects: https://github.com/N0NB
> GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819
>
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[Elecraft] P3 SVGA Mouse click tune

[Dale Boresz]

Any chance that the Keyboard connector on the rear panel of the P3 might 
one day support a mouse, offering point and click tune functionality?  
(point to the desired signal on the P3 using the mouse/cursor; click the 
mouse button; K3 tunes to that frequency; op uses K3 main tuning knob to 
tweak the tuning as needed)

My operation is about 95% cw, and click tuning sure would make it easy 
to quickly get to a signal at the other end of the current cw band 
within the current 'span'. The same benefit would exist for SSB as well.

73, Dale
WA8SRA

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Re: [Elecraft] CY9 cw note

[Dale Boresz]

Yep; I noticed it on 14.027 (or so). The first 'dit' was significantly 
clipped, and the rest were sort of okay. Sounds like he's using a badly 
adjusted or defective bug. The tone was fine; just the keying of the 
tone that wasn't what it should have been.

Dale
WA8SRA


On 7/29/2012 10:51 AM, Rick Stealey wrote:
> Anyone notice the CY9M cw note sounds choppy, or is it just me?
> On 10.116 as I write this at 14:50 Z.
>
> Rick  K2XT
>   
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Re: [Elecraft] Dead K3

[Dale Boresz]

If you can, check the resistance across the K3 "12VDC IN" Power Pole 
connections (after you've disconnected your Power Supply of course).

On my K3, an internal zener-like diode (D28 on the RF Board) evidently 
gave up its life to protect the radio from an overvoltage, and evidently 
the failure mode is a short circuit. This diode goes straight to ground 
immediately after the 6A inline fuse. I think the fuse is an 
auto-resetting fuse, so you can probably assume it is still completing 
the circuit for the purposes of your resistance measurement. If you 
measure a dead short, the culprit is likely D28.

73, Dale
WA8SRA




On 7/29/2012 6:32 PM, Dr. William J. Schmidt, II wrote:
> So I was testing out my new K3 before I take it to J6 next week for a little
> DXPedition work. and after about an hour of operation.. it just quit.  Dead
> as a door nail. has power to the back (checked) but never so much as the
> display activating.  Any ideas?  I SURE don't want to go back to that Flex
> 3000 that I had so much trouble with on PJ4..
>
>   
>
>   
>
> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>
>   
>
> Owner - Operator
>
> Big Signal Ranch
>
> Staunton, Illinois
>
>   
>
> email:    b...@wjschmidt.com
>
>   
>
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Re: [Elecraft] Dead K3

[Dale Boresz]

Bill,

Sorry, that's about the only thing that comes to mind that you could try 
without some disassembling. I agree, it sounds like D28 is not the 
issue. I'd call Elecraft Tech Support tomorrow and I'll bet they can 
help you out.

Best wishes for a quick and easy fix!

73, Dale
WA8SRA



On 7/29/2012 7:16 PM, Dr. William J. Schmidt, II wrote:
> Thanks for the tip... Measured about 995 ohms at the connector, so it
> appears D28 is still intact.
>
>
> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>
> Owner - Operator
> Big Signal Ranch
> Staunton, Illinois
>
> email:  b...@wjschmidt.com
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dale Boresz
> Sent: Sunday, July 29, 2012 6:07 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Dead K3
>
> If you can, check the resistance across the K3 "12VDC IN" Power Pole
> connections (after you've disconnected your Power Supply of course).
>
> On my K3, an internal zener-like diode (D28 on the RF Board) evidently gave
> up its life to protect the radio from an overvoltage, and evidently the
> failure mode is a short circuit. This diode goes straight to ground
> immediately after the 6A inline fuse. I think the fuse is an auto-resetting
> fuse, so you can probably assume it is still completing the circuit for the
> purposes of your resistance measurement. If you measure a dead short, the
> culprit is likely D28.
>
> 73, Dale
> WA8SRA
>
>
>
>
> On 7/29/2012 6:32 PM, Dr. William J. Schmidt, II wrote:
>> So I was testing out my new K3 before I take it to J6 next week for a
>> little DXPedition work. and after about an hour of operation.. it just
>> quit.  Dead as a door nail. has power to the back (checked) but never
>> so much as the display activating.  Any ideas?  I SURE don't want to
>> go back to that Flex
>> 3000 that I had so much trouble with on PJ4..
>>
>>
>>
>>
>>
>> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>>
>>
>>
>> Owner - Operator
>>
>> Big Signal Ranch
>>
>> Staunton, Illinois
>>
>>
>>
>> email:   <mailto:b...@wjschmidt.com> b...@wjschmidt.com
>>
>>
>>
>> __
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> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1424 / Virus Database: 2437/5163 - Release Date: 07/29/12
>
>

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Re: [Elecraft] Dead K3

[Dale Boresz]

Another possibility is that the /PWR_ON line that biases on Q2 is not 
being pulled low by the associated line to the Front Panel board due to 
an intermittent connection on connector J30. Maybe try disconnecting and 
then reconnecting the Front Panel board from the RF Board.

73, Dale
WA8SRA


On 7/29/2012 6:32 PM, Dr. William J. Schmidt, II wrote:
> So I was testing out my new K3 before I take it to J6 next week for a little
> DXPedition work. and after about an hour of operation.. it just quit.  Dead
> as a door nail. has power to the back (checked) but never so much as the
> display activating.  Any ideas?  I SURE don't want to go back to that Flex
> 3000 that I had so much trouble with on PJ4..
>
>   
>
>   
>
> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>
>   
>
> Owner - Operator
>
> Big Signal Ranch
>
> Staunton, Illinois
>
>   
>
> email:    b...@wjschmidt.com
>
>   
>
> __
> Elecraft mailing list
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Re: [Elecraft] K3 Phones / Diversity Question

[Dale Boresz]

Here is a link to a very small broadband active receiving antenna. The 
entire antenna and associated source follower and emitter follower 
buffer amp will fit inside a 6" x 2" PVC pipe. Very clever and elegant 
design, and it works extremely well. I've built two of them, and this 
weekend will be hanging one of them from a PVC boom attached to the 
tower. In addition to being an exceptional broadband receive-only 
antenna, it also works very well as a noise-sense antenna in conjunction 
with the DX Engineering NCC-1 to eliminate periodic local powerline noise.

< http://www.radiopassioni.it/pdf/pa0rdt-Mini-Whip.PDF >

Other useful information:
< http://carconline.blogspot.com/2009/05/pa0rdt-active-antenna.html >

73, Dale
WA8SRA




On 8/3/2012 2:32 PM, N5GE wrote:
> The diversity receive antenna (DRA) must be connected to the AUX antenna on 
> the
> back of the K3.  Unless your DRA has the same gain as the transmit antenna you
> will need to use a Preamp on the DRA.
>
> I use a DRA that is a 38 inch diameter loop of aluminum tubing that I can 
> rotate
> to peak up the signal of the far off station.  That loop has a 35 dB LNA
> attached.
>
> Most of us don't have the space to erect a large receive only, so we use 
> smaller
> antennae for the DRA.  If you are one who has the property to make a full size
> DRA, then you can probably get by without a Preamp unless you locate the DRA 
> as
> far away from the TX antenna as possible.  The old ship to shore stations used
> to locate the DRA and RX antennas miles from the transmitter, so since most of
> us can't do that, here are some links to specialized RX antennas.
>
> http://www.pixelsatradio.com/product/shortwave-magnetic-loop-antenna/
>
> http://www.dxengineering.com/search/department/antennas/brand/dx-engineering/part-type/hf-receive-antennas
>
> Don't let this discourage you.  The antenna I use is the one from PixelSat
> Radio, but you can make one just like it yourself if you like to build things.
>
> Amateur Radio Operator N5GE
> ARRL Lifetime Member
> QCWA Lifetime Member
>
> On Fri, 03 Aug 2012 10:16:18 -0700, Jim Bennett  wrote:
>
>> Still have issues with this. Here are the settings in Config that I'm 
>> assuming are relevant:
>>
>> L-Mix-R = A  b
>> SPKRS = 1
>> SPKR + Ph = no
>> SQ Main = Sub Pot
>> SQ Sub = Sub Pot
>> Sub AF = Nor
>>
>> With these Config settings, the K3 works fine with the SubRX turned off; 
>> equal Main audio in both headphones. When I turn on the SubRX, it is still 
>> OK; I get Main audio in the left ear and Sub audio in the right ear. I know 
>> I'm getting the Sub audio in the right ear, as I can turn the sub VFO and 
>> hear the frequency change in my right ear. BUT, as soon as I turn on 
>> Diversity, I get almost no signal in the right ear. It isn't silent - it's 
>> just that the signal that is pounding in on the Main is nearly inaudible on 
>> the Sub. If the signal being received on the Main is less than S7, I can't 
>> even hear it on the Sub with Diversity turned on. If it is an S9 or greater 
>> signal, then I can just barely hear it on the Sub when Diversity is turned 
>> on.
>>
>> Very strange. The SubRX works fine until Diversity mode is enabled.
>>
>> Any ideas? Does this need to be escalated to Elecraft Tech Support?
>>
>>
>> On   Friday, Aug 3, 2012, at  Friday, 6:02 AM, Mike K2MK wrote:
>>
>>> Hi Jim,
>>>
>>> One of the following might be helpful.
>>>
>>> If you have CONFIG:SPKRS set to 1 and CONFIG:SPKR+PH set to YES it will turn
>>> off the right channel of your headphones. Avoid the problem by turning
>>> CONFIG:SPKR+PH to no when using diversity.
>>>
>>> You also need to consider the setting of two other parameters which can be
>>> confusing with respect to SUB RX use. The first is CONFIG:SUB AF. Depending
>>> on whether you have chosen BALANCE or NOR it changes the way the concentric
>>> audio control operates. The second is CONFIG:L-MIX-R which controls which
>>> receiver's audio is in which ear. This control gets overridden when
>>> diversity is used and reverts to MAIN in left ear and SUB in right ear. So
>>> you might have one arrangement set for general SUB RX use and when you go to
>>> diversity it changes.
>>>
>>> 73,
>>> Mike K2MK
>>>
>>>
>>>
>>> Jim Bennett wrote
 I just recently added the sub receiver to my K3. I've been using the Sub
 receiver (without diversity turned on) and all was fine. I have the Yamaha
 CM500 headset - one cable plugged into the Phones jack and the other going
 to the Mic jack. I also have an Icom SP-20 external speaker, and it's
 connected to the Spkrs jack.

 Well, I engaged Diversity mode and at first thought it was working
 properly. But, when I turned the AF to zero on the Main receiver, I
 realized that the audio on the Sub was almost nonexistent signals are
 there, but really, really weak. OK, so looking at the Config parameters, I
 noticed in the KRX3 manual that SPKRS should be set to 1. Mine was set to
 2. I

[Elecraft] K3 - Lulu discount (Fred Cady's book)

[Dale Boresz]

For anyone interested in Fred Cady's excellent K3 book, Lulu is offering 
a 20% order-level discount on any order until August 10. (Promo Code: 
ASTOUND)

See:
< http://www.lulu.com >

Fred's book:
< 
http://www.lulu.com/shop/search.ep?type=&keyWords=elecraft+k3&x=9&y=12&sitesearch=lulu.com&q=
 
 >

73, Dale
WA8SRA


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Re: [Elecraft] K3 - Lulu discount (Fred Cady's book)

[Dale Boresz]

Hello Thomas,

I already have the book so I haven't tried this, but according to the ad 
on their home page at http://www.lulu.com (scroll down just a little bit 
and look in the left column), the code is: "ASTOUND" but they note that 
the code is case-sensitive.

73, Dale
WA8SRA


On 8/8/2012 4:40 PM, Thomas Horsten wrote:
> Hi Dale,
>
> Sure about the code? I get:
>
> The code you entered is not valid
>
> Tried both upper and lower case. Seems like a dud to me.
>
> 73, Thomas M0TRN
>
> On 8 August 2012 18:58, Dale Boresz  <mailto:d...@lightstream.net>> wrote:
>
>
> For anyone interested in Fred Cady's excellent K3 book, Lulu is
> offering
> a 20% order-level discount on any order until August 10. (Promo Code:
> ASTOUND)
>
> See:
> < http://www.lulu.com >
>
> Fred's book:
> <
> 
> http://www.lulu.com/shop/search.ep?type=&keyWords=elecraft+k3&x=9&y=12&sitesearch=lulu.com&q=
>  >
>
> 73, Dale
> WA8SRA
>
>
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Re: [Elecraft] K3 - Lulu discount (Fred Cady's book)

[Dale Boresz]

Thomas,

I just tried the promo code and it works here. It showed a $7 discount 
for a total price of $28.

73, Dale
WA8SRA

On 8/8/2012 4:40 PM, Thomas Horsten wrote:
> Hi Dale,
>
> Sure about the code? I get:
>
> The code you entered is not valid
>
> Tried both upper and lower case. Seems like a dud to me.
>
> 73, Thomas M0TRN
>
> On 8 August 2012 18:58, Dale Boresz  <mailto:d...@lightstream.net>> wrote:
>
>
> For anyone interested in Fred Cady's excellent K3 book, Lulu is
> offering
> a 20% order-level discount on any order until August 10. (Promo Code:
> ASTOUND)
>
> See:
> < http://www.lulu.com >
>
> Fred's book:
> <
> 
> http://www.lulu.com/shop/search.ep?type=&keyWords=elecraft+k3&x=9&y=12&sitesearch=lulu.com&q=
>  >
>
> 73, Dale
> WA8SRA
>
>
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[Elecraft] K3 Sidetone feature request

[Dale Boresz]

While trying to work D64K the other night on 20m CW with the filters 
tightened down to about 100Hz around D64K (to filter out the typical 
tuner-uppers, 'up'-cops, and stations calling on or nearly on 
frequency)  I wished that there was a way to offset the sidetone 
frequency just a bit so that it wasn't the same as the filter center 
frequency.  This issue is that when operating fast QSK where the DX 
station is tightly centered in the filter bandpass, my own sidetone gets 
in the way of being able to hear the DX station since the frequency is 
the same. If the sidetone could be offset 50 to 100 Hz above or below 
the filter center frequency, this masking would no longer occur.

Any chance that this capability already exists and I just haven't 
discovered it yet?

73, Dale
WA8SRA

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Re: [Elecraft] K3 Sidetone feature request

[Dale Boresz]

Hello Michael,

Good suggestion. I hadn't thought of that because I never use the filter 
shift function since it is disabled when QRQ is engaged. But since QRQ 
is disabled anyway for split operation, the shift should work fine. I'll 
give it a shot!

Thanks!

73, Dale
WA8SRA


On 8/12/2012 3:50 PM, N6MQL wrote:
> Drew, although I don't see a way for you to accomplish what you're asking, 
> being able to move the pitch Freq. while still monitoring the signal.  I can 
> see a way for Dale to do what he is trying to accomplish.
> Dale, have you considered setting your pitch to say 500hz (for example), and 
> then sliding your IF shift off freq. center by perhaps a few Hz (50 or so) 
> and then centering your DX station in the middle of that modified IF center.  
> This would change the sound of his tone to 450Hz for example (or 550Hz 
> depending on which way you move the IF Shift). At the same time, this would 
> keep him right in the center of your IF Width filter. Yet Your pitch for 
> transmit would still remain at 500 Hz. This would give you a nice difference 
> between your TX and receive Tones.  In order to TX on his Zero beat freq. you 
> may would have to do a SPLIT operation and then TX on the original freq where 
> he is zero beat without the offset.  Here's an example below:
>
> DX Zero beat = 14.050.000
> Pitch = 500Hz
> IF Shift = +50Hz (.55 on the Shift display)
> VFO A Read out = 14.050.050 (DX now sounds 50HZ higher than your Pitch Freq 
> but still remains ZERO Beat)
> TX Split Freq  = 14.050.000
>
> Hope this works out for you.  Best 73,
>
> Michael
> N6MQL
>
>
>
> While trying to work D64K the other night on 20m CW with the filters
>> tightened down to about 100Hz around D64K (to filter out the typical
>> tuner-uppers, 'up'-cops, and stations calling on or nearly on
>> frequency)  I wished that there was a way to offset the sidetone
>> frequency just a bit so that it wasn't the same as the filter center
>> frequency.  This issue is that when operating fast QSK where the DX
>> station is tightly centered in the filter bandpass, my own sidetone gets
>> in the way of being able to hear the DX station since the frequency is
>> the same. If the sidetone could be offset 50 to 100 Hz above or below
>> the filter center frequency, this masking would no longer occur.
>>
>> Any chance that this capability already exists and I just haven't
>> discovered it yet?
>>
>> 73, Dale
>> WA8SRA
>
>

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Re: [Elecraft] [K3] Keyer Pause

[Dale Boresz]

I have an older Begali 'Classic' (non-gold contacts) which has the same 
problem. However, it is easily and non-abrasively corrected by applying 
a drop or so of DeoxIT  (Radio Shack Part No. 640-43380), which lasts 3 
to 6 months before needing to be re-applied.

73, Dale
WA8SRA


On 9/4/2012 9:53 AM, Donald Thompson wrote:
>
> On Sep 4, 2012, at 7:42 AM, Lee Trout  wrote:
>
>> ...I have noticed that my Begali is quite sensitive to dirty contacts.  On my
>> Begali, intermittent operation is a sure sign the contacts need cleaning...
>>
> Hi Lee,
> It seems you're correct.  I switched to my hex key and the problem went away. 
>  Back to Begali and it returned.  For example my call becomes KAJ.. and 73 
> becomes 7V as it delays on the dash.
> I never suspected the key since I have been using it with the CW Machine with 
> no problems.   Perhaps one draws more current?
> Also, my K3 is in my new radio room, a finished family room 1/2 below grade 
> and with much higher humidity, been from 45 to 70% as I run the dehumidifier. 
>  Just wondering if this may be the cause.  The CW Machine is upstairs with AC 
> and thus very low humidity.
> Last,  how should I clean the contacts? I think with just a strip of paper 
> but know I must be careful.  Also the Leonessa has the contacts stacked 
> vertical with dash on bottom and hard to reach.
>
> Thanks,
> Don KA1KU
>
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Re: [Elecraft] [KPA500] stuck on TX when AUXBUS attached

[Dale Boresz]

Uh - oh...

Then perhaps what I'm doing is not 'best-practice'. I just leave the K3 
connected and --powered on--, and I can drive the KPA500 from another 
radio and the KPA500 follows it and works perfectly. I even have the PTT 
connections from both radios paralleled (the other radio is a 
FLEX-5000A), so the only thing I need to do is change the source of the 
rf drive to the KPA500.

73, Dale
WA8SRA


On 9/14/2012 6:39 AM, Jack Brindle wrote:
> Yes. It must be disconnected. The K3 is loading the band and PTT inputs to 
> the KPA, pulling them low. This has two effects - it will cause the KPA to 
> change to 60 meters, and the KPA will transition into transmit. If you wish 
> to use the KPA500 with another transmitter, you will need to first disconnect 
> it from the K3.
>
> Jack Brindle, W6FB
> Elecraft Engineering
>
>
> On Sep 14, 2012, at 12:26 AM, eric norris  wrote:
>
>> Tonight I tried to use my KX3 with my KPA500, but when I turn off the K3 
>> that it is attached to via AUXBUS, then put the KPA500 into OPERATE mode, 
>> the asterisk comes on and it is in TX, which means that the receiver of the 
>> KX3 goes deaf.  Is this the way it is supposed to work, or have I messed up 
>> a setting?  Will I have to remove the AUXBUS cable from the K3--even though 
>> the K3 is turned off--whenever I want to use the KPA500 with another rig?
>>
>> Thanks,
>>
>> Eric WD6DBM
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Re: [Elecraft] K3 - Filter suggestions for new builder

[Dale Boresz]

On 9/26/2012 1:35 PM, Edward R Cole wrote:
> ...  But I learned that audio is limited to 4-KHz
> regardless of IF filter so I ended up selling the extra 13-KHz filter.
>
> ...
>
> 73, Ed - KL7UW

I really hope that this does not apply to received audio to the 
headphones or loudspeaker!   I just purchased two FM filters (one for 
sub-receiver to monitor wide splits) specifically to open up the receive 
passband (audio included) for SWL and BCB reception. I have no intention 
of actually transmitting FM or AM for that matter -- just want the wider 
audio bandwidth for receive.

So... is the received audio bandwidth *really* limited to 4 KHz?

73, Dale
WA8SRA
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Re: [Elecraft] K3 - Filter suggestions for new builder

[Dale Boresz]

Hello Don,

Thanks for the quick response. I was just going through the K3 manual 
and KE7X's excellent book, but haven't seen any reference to that. For 
general ham radio operation I don't see it as a limitation, but it's a 
bit disappointing that the FM filters that will arrive tomorrow along 
with the 2nd RX, won't provide the capability I was hoping for.

73, Dale
WA8SRA

On 9/26/2012 7:23 PM, Don Wilhelm wrote:
> Sorry, but yes, the K3 audio is limited at 4 kHz, no matter whether it
> is to the headphones or to the speaker.  Please do not "shoot the
> messenger". but that information is in the archives of this reflector in
> several places - it has been discussed periodically.
>
> If you want to lobby for extended audio response, that is fine, but I am
> just saying what the limits are today.  Whether those can be extended or
> not is for the DSP designer to answer.
>
> 73,
> Don W3FPR
>
> On 9/26/2012 7:11 PM, Dale Boresz wrote:
>> On 9/26/2012 1:35 PM, Edward R Cole wrote:
>>> ...  But I learned that audio is limited to 4-KHz
>>> regardless of IF filter so I ended up selling the extra 13-KHz filter.
>>>
>>> ...
>>>
>>> 73, Ed - KL7UW
>> I really hope that this does not apply to received audio to the
>> headphones or loudspeaker!   I just purchased two FM filters (one for
>> sub-receiver to monitor wide splits) specifically to open up the receive
>> passband (audio included) for SWL and BCB reception. I have no intention
>> of actually transmitting FM or AM for that matter -- just want the wider
>> audio bandwidth for receive.
>>
>> So... is the received audio bandwidth *really* limited to 4 KHz?
>>
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Re: [Elecraft] K3 - Filter suggestions for new builder

[Dale Boresz]

Joe,

Good observations, all. I agree that 4.2 KHz is certainly good enough 
for communications audio.

The only reason I had for putting the FM filter in the 2nd receiver was 
to be able to hear more of the split in a broad pileup situation (like 
the extremely large split widths that we saw a few months ago with 
7O6T), figuring that being able to simultaneously hear the wider 
bandwidth and see it on the P3 would be a great combination. I'll just 
have to be a bit quicker with the VFO-B knob  ;-)

73, Dale
WA8SRA


On 9/26/2012 8:10 PM, Joe Subich, W4TV wrote:
> The limit occurs several places ... adjust the "HI" setting and one
> will find 4.20 is the maximum available.  There is also an analog
> lowpass filter in the audio (headphone and speaker) between the DAC
> and the headphone/speaker amplifiers.
>
> I'm sure this limitation derives from the roughly 10 KHz clock/sample
> rate used for the DAC ... Nyquist says the maximum frequency can not
> be more than half the sample (clock) rate.  4.2 KHz is plenty good
> enough for communications audio ... and not bad for AM with fading,
> noise, and interference typical of medium and high frequencies.
>
> The FM filter still provides noticeably better double sideband AM
> response (4.2 - 4.5 KHz with DSP/LPF skirts) than the AM filter
> (3.0-3.3 KHz depending on the IF filter response).
>
> 73,
>
>  ... Joe, W4TV
>
>
> On 9/26/2012 7:23 PM, Don Wilhelm wrote:
>> Sorry, but yes, the K3 audio is limited at 4 kHz, no matter whether it
>> is to the headphones or to the speaker.  Please do not "shoot the
>> messenger". but that information is in the archives of this reflector in
>> several places - it has been discussed periodically.
>>
>> If you want to lobby for extended audio response, that is fine, but I am
>> just saying what the limits are today.  Whether those can be extended or
>> not is for the DSP designer to answer.
>>
>> 73,
>> Don W3FPR
>>
>> On 9/26/2012 7:11 PM, Dale Boresz wrote:
>>> On 9/26/2012 1:35 PM, Edward R Cole wrote:
>>>> ...  But I learned that audio is limited to 4-KHz
>>>> regardless of IF filter so I ended up selling the extra 13-KHz filter.
>>>>
>>>> ...
>>>>
>>>> 73, Ed - KL7UW
>>> I really hope that this does not apply to received audio to the
>>> headphones or loudspeaker!   I just purchased two FM filters (one for
>>> sub-receiver to monitor wide splits) specifically to open up the receive
>>> passband (audio included) for SWL and BCB reception. I have no intention
>>> of actually transmitting FM or AM for that matter -- just want the wider
>>> audio bandwidth for receive.
>>>
>>> So... is the received audio bandwidth *really* limited to 4 KHz?
>>>
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Re: [Elecraft] K3 - Filter suggestions for new builder

[Dale Boresz]

Joe,

Understood. I wanted to be able to simultaneously hear and see 12 Khz or 
so of cw signals, thinking that I could more quickly identify the 
station being worked. For example, if I know the dx station is listening 
from 14.010 to 14.020 (admittedly pretty wide), I figured I could 
include that entire range within the FM filter bandwidth (which I still 
can do), AND also hear all 10 KHz of those signals (which I've learned I 
cannot do). Oh well; the FM filter will still let me hear a wider swath 
of the pile-up than my present 2.8KHz filter will...

73, Dale
WA8SRA


On 9/26/2012 9:25 PM, Joe Subich, W4TV wrote:
>> The only reason I had for putting the FM filter in the 2nd receiver
>> was to be able to hear more of the split in a broad pileup situation
>> (like the extremely large split widths that we saw a few months ago
>> with 7O6T),
> The width of the roofing filter has nothing at all to do with hearing
> more of the pile-up (unless you're talking about literally "listening"
> to all the signals at one time like a pile-up tape).  The P3's pick-
> up point is ahead of any roofing filter - it can "see" up to 200 KHz
> at a time.  The K3 transmitter and receiver can be split anywhere in
> the band and if the KRX3 is used with a separate antenna the K3 and
> KRX3 can literally transmit on one band and listen on another.
>
> 73,
>
>  ... Joe, W4TV
>
>
> On 9/26/2012 8:58 PM, Dale Boresz wrote:
>> Joe,
>>
>> Good observations, all. I agree that 4.2 KHz is certainly good enough
>> for communications audio.
>>
>> The only reason I had for putting the FM filter in the 2nd receiver was
>> to be able to hear more of the split in a broad pileup situation (like
>> the extremely large split widths that we saw a few months ago with
>> 7O6T), figuring that being able to simultaneously hear the wider
>> bandwidth and see it on the P3 would be a great combination. I'll just
>> have to be a bit quicker with the VFO-B knob  ;-)
>>
>> 73, Dale
>> WA8SRA
>>
>>
>> On 9/26/2012 8:10 PM, Joe Subich, W4TV wrote:
>>> The limit occurs several places ... adjust the "HI" setting and one
>>> will find 4.20 is the maximum available.  There is also an analog
>>> lowpass filter in the audio (headphone and speaker) between the DAC
>>> and the headphone/speaker amplifiers.
>>>
>>> I'm sure this limitation derives from the roughly 10 KHz clock/sample
>>> rate used for the DAC ... Nyquist says the maximum frequency can not
>>> be more than half the sample (clock) rate.  4.2 KHz is plenty good
>>> enough for communications audio ... and not bad for AM with fading,
>>> noise, and interference typical of medium and high frequencies.
>>>
>>> The FM filter still provides noticeably better double sideband AM
>>> response (4.2 - 4.5 KHz with DSP/LPF skirts) than the AM filter
>>> (3.0-3.3 KHz depending on the IF filter response).
>>>
>>> 73,
>>>
>>>... Joe, W4TV
>>>
>>>
>>> On 9/26/2012 7:23 PM, Don Wilhelm wrote:
>>>> Sorry, but yes, the K3 audio is limited at 4 kHz, no matter whether it
>>>> is to the headphones or to the speaker.  Please do not "shoot the
>>>> messenger". but that information is in the archives of this reflector in
>>>> several places - it has been discussed periodically.
>>>>
>>>> If you want to lobby for extended audio response, that is fine, but I am
>>>> just saying what the limits are today.  Whether those can be extended or
>>>> not is for the DSP designer to answer.
>>>>
>>>> 73,
>>>> Don W3FPR
>>>>
>>>> On 9/26/2012 7:11 PM, Dale Boresz wrote:
>>>>> On 9/26/2012 1:35 PM, Edward R Cole wrote:
>>>>>> ...  But I learned that audio is limited to 4-KHz
>>>>>> regardless of IF filter so I ended up selling the extra 13-KHz filter.
>>>>>>
>>>>>> ...
>>>>>>
>>>>>> 73, Ed - KL7UW
>>>>> I really hope that this does not apply to received audio to the
>>>>> headphones or loudspeaker!   I just purchased two FM filters (one for
>>>>> sub-receiver to monitor wide splits) specifically to open up the receive
>>>>> passband (audio included) for SWL and BCB reception. I have no intention
>>>>> of actually transmitting FM or AM for that matter -- just want the wider
>>>>> audio bandwidth for receive.
>>>>&g

Re: [Elecraft] K3 - Filter suggestions for new builder

[Dale Boresz]

No, I'm not a human 'Skimmer' -- but I can pick out an individual cw 
signal within about an 8 KHz span if it's pitch falls somewhere between 
about 200 Hz and 8 KHz, and can probably 'guestimate' by the pitch, to 
which signal it corresponds on the P3, and then quickly place my TX 
signal nearby and make my call.

I guess I'm not conveying very successfully what I was hoping to do. I 
can do this easily w/ the second rx of the FLEX-5K --  but we're talking 
completely different architectures, each with their own pluses and 
minuses. The FM filters and the KRX3 will be here today, so I'll be able 
to experiment soon enough. I suspect that just being able to monitor 
both the dx and the pile-up simultaneously will be a huge help, and I 
may not feel the need for such a wide bandwidth on the pile-up side. 
We'll see...

73, Dale
WA8SRA



On 9/27/2012 12:20 AM, Joe Subich, W4TV wrote:
>> I figured I could include that entire range within the FM filter
>> bandwidth (which I still can do), AND also hear all 10 KHz of those
>> signals (which I've learned I cannot do).
> Your ears are much better than mine if you can actually copy a full
> 10 KHz wide audio pile-up.  I have enough trouble keeping up with
> 4 KHz or so (200 Hz to 4.2 KHz) if I open everything up in SSB mode.
> Note the K3 limits HI in CW to "Pitch + 1400 Hz" thus if one likes
> a 500 Hz tone, the highest frequency passed in CW is 1900 Hz.  The
> *widest* bandwidth possible in CW is by using an 800 Hz sidetone
> which results in 2.2 KHz ... whether the "roofing filter" is 2.7,
> 2.8, 6 or 13 KHz wide.
>
> 73,
>
>  ... Joe, W4TV
>
>
> On 9/26/2012 9:46 PM, Dale Boresz wrote:
>> Joe,
>>
>> Understood. I wanted to be able to simultaneously hear and see 12 Khz or
>> so of cw signals, thinking that I could more quickly identify the
>> station being worked. For example, if I know the dx station is listening
>> from 14.010 to 14.020 (admittedly pretty wide), I figured I could
>> include that entire range within the FM filter bandwidth (which I still
>> can do), AND also hear all 10 KHz of those signals (which I've learned I
>> cannot do). Oh well; the FM filter will still let me hear a wider swath
>> of the pile-up than my present 2.8KHz filter will...
>>
>> 73, Dale
>> WA8SRA
>>
>>
>> On 9/26/2012 9:25 PM, Joe Subich, W4TV wrote:
>>>> The only reason I had for putting the FM filter in the 2nd receiver
>>>> was to be able to hear more of the split in a broad pileup situation
>>>> (like the extremely large split widths that we saw a few months ago
>>>> with 7O6T),
>>> The width of the roofing filter has nothing at all to do with hearing
>>> more of the pile-up (unless you're talking about literally "listening"
>>> to all the signals at one time like a pile-up tape).  The P3's pick-
>>> up point is ahead of any roofing filter - it can "see" up to 200 KHz
>>> at a time.  The K3 transmitter and receiver can be split anywhere in
>>> the band and if the KRX3 is used with a separate antenna the K3 and
>>> KRX3 can literally transmit on one band and listen on another.
>>>
>>> 73,
>>>
>>>... Joe, W4TV
>>>
>>>
>>> On 9/26/2012 8:58 PM, Dale Boresz wrote:
>>>> Joe,
>>>>
>>>> Good observations, all. I agree that 4.2 KHz is certainly good enough
>>>> for communications audio.
>>>>
>>>> The only reason I had for putting the FM filter in the 2nd receiver was
>>>> to be able to hear more of the split in a broad pileup situation (like
>>>> the extremely large split widths that we saw a few months ago with
>>>> 7O6T), figuring that being able to simultaneously hear the wider
>>>> bandwidth and see it on the P3 would be a great combination. I'll just
>>>> have to be a bit quicker with the VFO-B knob  ;-)
>>>>
>>>> 73, Dale
>>>> WA8SRA
>>>>
>>>>
>>>> On 9/26/2012 8:10 PM, Joe Subich, W4TV wrote:
>>>>> The limit occurs several places ... adjust the "HI" setting and one
>>>>> will find 4.20 is the maximum available.  There is also an analog
>>>>> lowpass filter in the audio (headphone and speaker) between the DAC
>>>>> and the headphone/speaker amplifiers.
>>>>>
>>>>> I'm sure this limitation derives from the roughly 10 KHz clock/sample
>>>>> rate used for the DAC ... Nyquist says the maximum frequenc

[Elecraft] [P3][K3][KRX3] Viewing cursors for both receivers on P3

[Dale Boresz]

When using the second receiver w/ the K3 and P3, is there a way to have 
a second cursor representing the frequency of the 2nd rx on the P3?  
Currently the  only way I have been able to get this to work is to 
engage "Split", but my goal is to be able to tune around the same band 
with the second rx  (within the current passband of the P3) while 
listening to a station on the main RX, and be able to view both VFO's on 
the P3 -- while not being in 'split' mode.

73, Dale
WA8SRA

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Re: [Elecraft] K3 headphone audio

[Dale Boresz]

Jerry,

Just a suggestion for headphone usage in general -- regardless of the 
equipment into which they are being plugged: Never plug headphones into 
any device, while they are in place over your ears. I use headphones 
extensively here, for both ham radio and general music listening, and I 
learned my lesson many years ago. I always plug them into the source 
device while they are resting on the table top or around my neck resting 
on my shoulders. If the source volume is way too loud, you'll find out 
well before it becomes startling/painful to your ears. None of this is 
probably news to you -- just a reminder ;-)

73, Dale
WA8SRA


On 10/13/2012 12:00 PM, Jerry Pittenger wrote:
> I am using a pair of Yaesu YH-77st headphones.   When I plug them into my K3
> after listening to the K3 on speakers, the AF setting almost blows my ears
> off.  I have to crank the AF way down.   Is there any way to make the audio
> level using speakers to be at compatible levels with headphones.  Any ideas
> sure would be appreciated.
>
>   
>
> Jerry K8RA  ( http://www.k8ra.com )
>
>   
>
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Re: [Elecraft] SVGA Keyboard compatibility

[Dale Boresz]

Just another data point, but the Logitech MK360 wireless USB keyboard 
and mouse combo from Walmart works FB here (see link below). Not using 
the mouse of course, but the keyboard and mouse combo may be used 
elsewhere if desired.

< http://www.walmart.com/ip/Logitech-Wireless-Combo-MK360/17300885 >

I am not the one who discovered this particular version; someone else on 
the list did (sorry, I cannot remember who it was), but thanks to that 
individual!

73, Dale
WA8SRA

On 10/15/2012 2:04 PM, Paul Saffren N6HZ wrote:
> Hi Glen,
>
> I am not sure about the Microsoft wireless keyboard, does it have mouse with
> it?  The USB on the SVGA does not support composite keyboards, in other
> words, those with mice.   The Logitech K360 wireless works really good and I
> think you can still find them at Staples for around $15 each.
>
> 73,
>
> Paul
>
>
>
>
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/SVGA-Keyboard-compatibility-tp7564160p7564161.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] [K3] short circuit at power terminals

[Dale Boresz]

Hello Lewis,

I experienced this same issue once, and the problem ended up being the 
Transil diode D28 on the main pc board, near the 12 vdc power input 
connection. It is a large diode, and I believe it's purpose in life is 
to protect against excessive input voltage. It should begin to draw 
current when the voltage goes too high, and that should blow the 
resettable fuse F1. In my case, I was running the power supply voltage 
at about 15.0 vdc, and I suspect that my particular diode may have had a 
slightly lower threshold than normal, and was probably drawing current 
and dissipating power, though not enough to blow the F1 fuse -- until it 
failed completely by short circuiting. (This is just a guess; The 
replacement that I received from Elecraft has been working fine though.)

If you can, try measuring the resistance in both directions across diode 
D28. To really prove it though, you'd need to lift at least one end of 
that diode and then measure it.

Spec sheet on the diode:

< 
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD0695.pdf
 
 >

Best of luck with your troubleshooting.

73, Dale
WA8SRA

On 10/19/2012 2:50 AM, Lewis Phelps wrote:
> Yikes!  My reliable K3-10 has developed a short circuit across the power 
> input terminals.  Well, to be exact, not quite a dead short. It measures 0.6 
> ohms across the PowerPole connectors. It most certainly does blow fuses on 
> the input line.
>
> Any suggestions for trouble shooting?  And also for a possible cause of the 
> problem?
>
> Lew N6LEW
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Re: [Elecraft] K3-PR10

[Dale Boresz]

Fred,

You must have an enviably quiet QTH (or a very poor antenna) if you find 
that the K3 can benefit from a preamp on 10m. I work a lot of weak 
signal CW on 10m with a simple Hex Beam up about 45 feet. Even with the 
Hex Beam's low gain, I can see the noise floor drop by about 9 dBm when 
I disconnect the antenna from the K3 with the antenna pointed to the 
quietest part of the sky in the early morning hours when the band is 
clearly not open. These measurements were taken using both the P3 and 
the K3's built-in AFV amd dBV measurement functionality.

Based upon the above measurements, the band noise is already one and a 
half S-Units above the receiver's noise floor, so it seems to me that in 
terms of improving the signal to noise ratio, a preamp would be of 
little value.

What am I missing here? (perhaps a quieter location  ;-)   )

73, Dale
WA8SRA



On 10/26/2012 4:51 AM, Fred Smith wrote:
> Tim
>
> I can address this a little comparing my FTDX-5000MP and my K3's the k3's
> receivers are not up to the level of the Yaesu 5000 on the high bands. But
> quite the other way around on the low bands in IMHO but 6/10m really needs a
> good preamp for sure.
>
> 73,
> Fred/N0AZZ

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Re: [Elecraft] K3-PR10

[Dale Boresz]

Fred,

Clearly, my QTH on the shore of Lake Erie about 15 miles East of 
Cleveland, Ohio is not as quiet as yours. I don't doubt that the K3 
could benefit from a preamp on 10 meters -- IF -- one lives in a quiet 
enough location to be able to appreciate it. My location does not qualify.

I compared the K3 rx performance on 10m with that of my FLEX-5000A, and 
both indicate  the noise floor rising about 8 to 9 dB when the Hex Beam 
is connected. So, it's clear to me that the ambient noise level of my RF 
environment already exceeds the noise floor of the receivers, and I 
wouldn't benefit from the PR-10.

Please note: I am not saying that the PR-10 would not be beneficial for 
some stations, and I'm quite sure that the Elecraft engineers wouldn't 
develop and market the PR-10 for lack of anything better to do.  I've 
always operated from this area, so it's the only RF environment I know, 
and based upon my tests, the PR-10 would provide no benefit here, at 
this QTH. It would be nice if the rf environment was a bit quieter, but 
I'm still having fun.

73, Dale
WA8SRA


On 10/26/2012 8:11 AM, Fred Smith wrote:
> Dale
>
> Your missing the better receiver of the 5000 on 10m, and yes I live in the
> country on a farm with 7 elements on 10m at 60'. My suggestion would be for
> you to buy a 5000 and then you would hear the difference this is not a knee
> jerk statement but one that was checked over many months with instant A/B
> antenna switching to the same antenna. What are you using for your
> comparison between the 2 radios other than an A/B side by side? I also have
> a P3/SVGA and an SDR-IQ on the FTDX-5000 for a Panadpter for measurements.
>
> For starters you might put up a better antenna a little higher and from the
> sounds of it find somewhere that is in a quieter location to take advantage
> of weak signal work. I'm very happy with my K3's and the K2, KPA500 and plan
> on keeping them but there is no perfect radio all have their faults and
> strong points. I don't know why some refuse to believe that a radio can be
> lacking in any area no matter who made it, I have never had that problem. I
> am not a brand loyal person but one who buys what he feels is the best
> performing radio that meets his needs and a company he likes.
>
> For now Elecraft meets my needs and are responsive to its customers with
> products and support. I do believe that if Wayne or Eric thought that a 10m
> preamp was not necessary they would not have one on the planning boards. For
> all their feedback to customers is why I choose Elecraft they do not hide
> their head in the sand.
>
> 73,
> Fred/N0AZZ
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dale Boresz
> Sent: Friday, October 26, 2012 5:01 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3-PR10
>
> Fred,
>
> You must have an enviably quiet QTH (or a very poor antenna) if you find
> that the K3 can benefit from a preamp on 10m. I work a lot of weak signal CW
> on 10m with a simple Hex Beam up about 45 feet. Even with the Hex Beam's low
> gain, I can see the noise floor drop by about 9 dBm when I disconnect the
> antenna from the K3 with the antenna pointed to the quietest part of the sky
> in the early morning hours when the band is clearly not open. These
> measurements were taken using both the P3 and the K3's built-in AFV amd dBV
> measurement functionality.
>
> Based upon the above measurements, the band noise is already one and a half
> S-Units above the receiver's noise floor, so it seems to me that in terms of
> improving the signal to noise ratio, a preamp would be of little value.
>
> What am I missing here? (perhaps a quieter location  ;-)   )
>
> 73, Dale
> WA8SRA
>
>
>
> On 10/26/2012 4:51 AM, Fred Smith wrote:
>> Tim
>>
>> I can address this a little comparing my FTDX-5000MP and my K3's the
>> k3's receivers are not up to the level of the Yaesu 5000 on the high
>> bands. But quite the other way around on the low bands in IMHO but
>> 6/10m really needs a good preamp for sure.
>>
>> 73,
>> Fred/N0AZZ
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Re: [Elecraft] K3 Receive Sensitivity Consistency

[Dale Boresz]

David,

Check your PRE and ATT setting on 60m compared to your other bands. I 
would guess that you have the ATT engaged on 60m and not on the other bands.

73, Dale
WA8SRA


On 10/28/2012 12:22 PM, David Little wrote:
> When I turned the K3 on this morning, I decided to listen to 60m, to get
> away from the contesting.
>   
> As I went through the bands from the 2 meg frequency I had been monitoring,
> when it got to the 5 MHz band it seemed to be a bit deaf.
>   
> Volume was considerably lower, but signal on the P3 looked consistent with
> the other bands.
>   
> Going into the Menu and bringing the Receive EQ to +16 on all 8 frequencies
> did not restore the volume level.
>   
> Using the Band switch, toggling back down to 75m brought similar results;
> lower receive level.
>   
> However when going back to the original 2 Meg frequency and manually tuning
> up with the VFO, the sensitivity and volume remained consistent all the way
> up to the 5 Meg freq that I was trying to monitor initially.
>   
> After that, going through the spectrum using the Band Select switch yielded
> consistent results.
>   
> When using the VFO, I was looking for a magic relay click, or some crossed
> frequency threshold that triggered a return to sensitivity, but there was no
> degradation as long as I was going up the band with the VFO.
>   
> Serial Number 5063; Anyone else seen this before?
>   
> David
> KD4NUE
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Re: [Elecraft] CW WGT observations and measurements

[Dale Boresz]

I've tried using an external Logikey K-3 w/ my K3 (one would think that 
would be a perfect match ;-) ), but when QRQ is turned off, the K3 can't 
follow the external keyer past about 38 WPM. That's a problem because 
QRQ is disabled when operating split, and that's frequently when higher 
cw speed is needed in chasing DX in a pileup situation.

The internal keyer works much better in this regard though the weight 
setting with the internal keyer has to be changed depending upon QRQ or 
not QRQ, and if QRQ is off, the weight has to be adjusted to a higher 
number with higher cw speeds compared to the setting required for speeds 
around 25 wpm.

I would very much like to take advantage of the auto-spacing 
functionality of the Logikey K-3, but when QRQ is turned off or 
disabled, the K3 keying weight lightens up too much as the speed is 
increased -- and falls apart completely at about 38 wpm. (at least mine 
does...)

I would guess that the K3's microprocessor has greater control over the 
keying when using the internal keyer as opposed to an external keyer.

73, Dale
WA8SRA

On 11/9/2012 9:20 PM, Ralph Parker wrote:
> .  Another reason to use an external keyer, IMHO. Ralph, VE7XF 
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Re: [Elecraft] [K3] - Hum on SSB Transmissions

[Dale Boresz]

Joe,

You might check to see if the amplitude of the hum changes as you alter the
position of the microphone. If so, the magnetic field of a transformer from
another piece of equipment in the shack (such as a linear power supply) may
be coupling into your microphone.

73,
Dale - WA8SRA


On Sun, Dec 2, 2018 at 4:19 PM Joe Rogers  wrote:

> I normally operate CW but the other day and have not been SSB for a few
> weeks to a month.  Yesterday, I was getting ready to operate SSB and I
> noted a hum through the monitor when I key the transmitter. By way of
> background, K3 is 2012 vintage and I assembled the kit.  No problems with
> until this one.  I have found several similar threads mentioning a hum on
> SSB transmit but of the mentioned solutions worked to solve my problem.
>
> I have Heil Pro set IC and Heil Gold Elite.  The problem seems much more
> pronounced with Proset IC.
>
> Whether it is connected to front panel (FP.H or RP.H Bias on) makes no
> difference.  If I used PTT or VOX it is there.  Set Mic Gain at anything
> above zero it starts.  With higher mic gain and higher compression it is
> worse.   I have made some PSK contacts using the LIN IN input and seems to
> work OK.
>
> It seemed like low frequency noise so I set the TX filters for 50 and 100
> Hz from 0 to -16.  No change.
>
> Changed TX Gate from 0 to 10.  No change.
>
> Disconnected everything from the K3 - RS232 cable, the antennas, keys, and
> paddle.  All except power supply and the Mic.  No change.
>
> Mic+Lin ON or OFF no change.
>
> Curiously, if I put my hand on the rig, it seems to reduce the volume of
> the hum.
>
> Recorded some audio with Proset on my PC and it seems clean - no noise
> detectable.
>
> I wonder if any of you guys - all of you probably more technically savvy
> than I - can come up with any ideas to solve this problem.
>
> Thanks in advance for any help you can give me.
>
> 73,
> Joe
> AJ1Y
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Re: [Elecraft] WHY NOT 700HZ FILTER FOR K3/K3S?

[Dale Boresz]

My most-used cw filter is the 1KHz filter with the width control set for
700-800 Hz. The audio is easy on the ears (my ears anyway), and still wide
enough for NR and APF to be effective.

73,

Dale - WA8SRA

On Sun, Dec 23, 2018 at 12:49 PM IK4EWX  wrote:

> It is a better thing to have a roofing filter, i wouldnt like to use only
> the
> dsp with the 2700 ssb filter.
> I have the 500hz 5 pole filter (and the 200hz 6 pole), but I find that
> sometime I have a nicer audio tone with a wider filtering.
> 1000hz is too wide for me, sure it is good with rtty, but for cw with our
> noisy and crowded band is too much.
> So I think that a 700 hz Bessel filter, or a better (wide at the base)
> gaussian 600hz sure would have a better audio cw in reception.
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] [Elecraft-K3] K3S Comparison table finalized (link attached)

[Dale Boresz]

Try: < http://ftp.elecraft.com/K3S/K3S_comparison1.pdf >

73,

Dale - WA8SRA

On Mon, Jan 14, 2019 at 7:14 PM Robert G Strickland 
wrote:

> I can' get this, latest link to work either.
> ...robert
>
> On 1/14/2019 04:11, John Hiatt wrote:
> > It appears to be linked from the K3S Transceiver Product page, on the
> Manuals tab toward the bottom of the page, but here is the current link:
> ftp://ftp.elecraft.com/K3S/K3S_comparison1.pdf
> >
> > John, KC7DRI
> >
> >
> > 
> > From: elecraft-boun...@mailman.qth.net 
> on behalf of Bob Wilson, N6TV 
> > Sent: Sunday, January 13, 2019 6:45 PM
> > To: Elecraft Reflector
> > Subject: Re: [Elecraft] [Elecraft-K3] K3S Comparison table finalized
> (link attached)
> >
> > The link below no longer works.  Where is this document now?
> >
> > 73,
> > Bob, N6TV
> >
> > On Sat, Jul 7, 2018 at 9:05 AM N6KR  wrote:
> >
> >> Our detailed, two-page comparison table between the K3S and IC-7610 is
> now
> >> complete:
> >>
> >>  http://www.elecraft.com/K3/K3S_comparison1.pdf
> >>
> >> I�d like to thank everyone who reviewed the table for content and
> >> accuracy, including several who own or have used both radios. Many of
> your
> >> suggestions were incorporated. As a result, the table now captures those
> >> aspects of the performance, portability, and user interface of the K3S
> that
> >> are most important to current and prospective owners.
> >>
> >> The table is an excellent starting point. If you still have unanswered
> >> questions about K3S features, theory of operation, etc., feel free to
> email
> >> me directly. (In fact, if you�re within driving distance of my QTH in
> >> Belmont, CA, stop by for a demo :)
> >>
> >> 73,
> >> Wayne
> >> N6KR
> >>
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>
> --
> Robert G Strickland, PhD ABPH - KE2WY
> rc...@verizon.net.usa
> Syracuse, New York, USA
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Re: [Elecraft] PX3 display

[Dale Boresz]

Tap the the "Display / Average" button in the upper right corner of the PX3

73,
Dale - WA8SRA


On Tue, Feb 5, 2019 at 9:45 AM Joseph Trombino, Jr 
wrote:

> Howdy Gang.
>
> Recently picked up a nice PX3 to use with my KX3 and have been playing
> with the menu options but can’t seem to find the one I want.
>
> I’d like to make the upper frequency portion of the display full screen….I
> don’t need the bottom waterfall.
>
> Is this possible?
>
> Seems like largest screen I can get is about 1/2 size.
>
> Am I missing a menu option?
>
> Appreciate any info/assistance.
>
> 73, Joe W2KJ
>
>
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Re: [Elecraft] K2 still a viable portable contest station?

[Dale Boresz]

Hello Paul,

Regarding the KX3 station, the DX Engineering RTR-2 will enable you to use
a receiving antenna, and it handles the T/R and protection duties nicely.
I've been using one for a couple of years with a Pixel magnetic loop on 80,
40, and 30 meters. It also has a front panel toggle switch that allows you
to quickly engage the tx antenna for reception as well, giving you the
opportunity to use whichever one provides the best signal.

73,

Dale - WA8SRA


On Tue, Feb 26, 2019 at 9:32 AM Paul Gacek via Elecraft <
elecraft@mailman.qth.net> wrote:

> I’m heading down to Costa Rica tomorrow with a couple of friends to
> participate in the ARRL DX Phone contest.
>
> Last year we took my KX3/PX3/KXPA100 combo and were pretty happy all round
> with it (the KXPA100 did seem to get upset periodically which always
> happened when I was off shift, resulting in me being rudely awakened…).
>
> The station has evolved a bit and in addition to my KX3/PX3/KXPA100 combo
> we will have a K3. One big attraction of the K3 is its RX antenna port so
> we can use a K9AY RX antenna.
>
> While the K3 is unlikely to be a permanent fixture of my portable station
> going forward I’m curious about people’s perspective of the efficacy and
> viability of a K2/100 with the 160m/RX port option as a station in a
> contest (I have the DSP option too).
>
> I’ve seen the Sherwood data etc and I know the KX3/K3 are “better” radios
> but we are a 100 watt low power station with a variety of antennas
> (Buddipole, OCFs, Hexbeam etc) and maybe the K2/100 to all intents and
> purposes is good enough such that we essentially nab as many stations as
> the K3 would with the same antennas.
>
> Any feedback is welcome.
>
> Paul W6PNG/M0SNA
> www.nomadic.blog 
>
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Re: [Elecraft] KAT500/K3 position

[Dale Boresz]

Mike,

I've had mine positioned that way for the last 4-1/2 years, with the radio
powered up about 18 hours a day every day. Never had any kind of problem.

73,

Dale - WA8SRA


On Tue, Apr 24, 2018 at 6:15 PM, Mike Murray  wrote:

> I'm rearranging the station and considering putting the KAT500 on top of my
> K3.  Will the clearance be adequate for proper cooling airflow thru the K3?
>
> 73,
> Mike - W0AG
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Re: [Elecraft] P3 problem...

[Dale Boresz]

Hello Doug,

My guess would be that the cable that should connect the P3 "RF IN" BNC to
the K3 "IF OUT" BNC is either not fully-engaged on both ends, or is
defective.

73,

Dale - WA8SRA


On Sat, May 26, 2018 at 4:52 PM, Doug Eaton via Elecraft <
elecraft@mailman.qth.net> wrote:

> Hello Elecrafters.  I recently moved my station to a different room.
> After setting everything up in the new location, everything works normally
> except for the P3..  The P3 turns on and boots-up normally, but there are
> no signals on the display.  The frequency of the K3 is displayed correctly
> on the top center of the display, so it seems that the cable is hooked-up
> correctly, but the only signals on the display are random noise on the
> bottom of the display at a level below S1.  It doesn't change even if I
> turn the antenna switch to a dummy load, or even shut the K3 off.  I live
> in town, and the local noise level is normally S9 or so on the lower bands,
> but nothing shows on the display on any band, even though the K3 is
> picking-up signals.  Any ideas?  Thanks es 73 de Doug  N7QS.
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Re: [Elecraft] 12v for KAT500, et al.

[Dale Boresz]

Hello Dennis,

You may find something here:

<
https://www.dxengineering.com/search/product-line/west-mountain-radio-rigrunner-dc-outlet-panels?autoview=SKU&keyword=rigrunner&sortby=Default&sortorder=Ascending
>

73,

Dale - WA8SRA




On Wed, Jul 11, 2018 at 7:52 PM, Dennis Haarsager 
wrote:

> My new KAT500 adds yet another 12v pigtail to many others in my shack.
> Does anyone make a box of some sort to collect and organize all these to a
> 12v supply? Thanks.
>
> Dennis, N7DH/1, MM/N7DH
>
> Sent from my iPhone
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Re: [Elecraft] KX3 Knob Responsiveness

[Dale Boresz]

Bert,

I don't know that this is necessarily specific to 'older' KX3's. My KX3,
S/N: 6080 AF/RF-SQL and KEYER/MIC controls behave the same way if the knob
is rotated very quickly. It's always been that way. Not a big deal; I just
need to remember to turn the controls more slowly.

73,

Dale - WA8SRA


On Sun, Jul 22, 2018 at 8:00 PM, Bert via Elecraft  wrote:

> My old KX3 (S/N 763) is a great performer but I'm concerned about the
> "responsiveness" of the AF/RF Squelch encoder knob. The VFO (?) knobs (A
> and B) work great and the response to turns is immediate. If I turn the AF
> gain rapidly, the sound (and the numbers displayed as "AF xx") don't react
> in sync, especially if I turn it fast. If I turn the knob slowly, no
> problem.
>
> Is this a known problem with "older" KX3's? Should I consider replacing
> the AF/RF Squelch encoder? The recent posting for replacing the "VFO" B
> encoder prompted me to ask the "learned masses"...
>
> 73, Bert N4CW/K1IMI
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Re: [Elecraft] [PX3] Does not respond to the knob being rotated

[Dale Boresz]

Steve,

Just another data point ...

My PX3 exhibits the same behavior in a system that includes the KXPA100. I
see it happen when I twist the KX3's OFS knob to quickly QSY. However, if
I turn OFF the the KXPA100 via the KX3 "PA MODE" menu option, the PX3
responds immediately to a twist of the KX3 OFS knob. If I turn the KXPA100
"ON" again, a quick turn of OFS results in the original sluggish PX3
response. Perhaps communications between the KX3 and the KXPA100 is at a
higher priority than between the KX3 and the PX3.

73,

Dale - WA8SRA



> I have seen a similar issue with my PX3 but it may not be the same or it
> may be related to the root of the problem.
>
> What I notice is what "in the old days" would be switch bounce. What I
> notice (like you) is when I turn the knob fast the value bounces around
> but doesn't go anywhere.  I find that if I turn the knob real slow it
> will work.  The knob is an encoder and must be seeing  CW/CCW pulses out
> of sync or something like that?
>
> Does slow work?
>
> steve WB3LGC
>
>
> On 10/16/2016 12:34 PM, James Austin wrote:
>> My PX3 no longer responds to the knob being turned. The only indication
>> I
>> see when turning it is when the marker frequency is being displayed.
>> When
>> turning the knob, the displayed marker frequency bounces back and forth
>> between something like 14.050.80 and 14.050.85.
>>
>> The PX3 is otherwise functional.
>>
>> Any suggestions? I opened it up and all the solder connections for the
>> encoder are solid.
>>
>> 73,
>>
>> Jim/KA2RVO
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Re: [Elecraft] Simulated stereo

[Dale Boresz]

Hello Victor,

A quick web search turned up this inexpensive ($11) thru-hole kit that may
be worthwhile exploring.

<
https://www.amazon.com/Stereo-Simulator-Signal-Converter-Unassembled/dp/B00WO8I0ZS
>

73,
Dale - WA8SRA




On Fri, Dec 24, 2021 at 5:37 AM Victor Rosenthal 4X6GP 
wrote:

> The K3 (and I think the KX3 and K4) has a simulated stereo function
> which allows you delay the audio to one channel slightly, which makes
> signals seem to stand out from the noise. I believe that the radios
> newer than the K3 also have the ability to create stereo separation by
> pitch, which helps in picking out CW signals in QRM.
>
> My question is: is there some kind of device that you can get that will
> take the monaural audio from a non-Elecraft radio or a K2 and produce
> similar effects?
> --
> 73,
> Victor, 4X6GP
> Rehovot, Israel
> CWops #5
> Formerly K2VCO
> https://www.qsl.net/k2vco/
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Re: [Elecraft] noisy VFO's

[Dale Boresz]

Hello Natan,

I can hear the same thing here. Decent high frequency hearing and a 
reasonably quiet shack are prerequisites to hearing it though. It's a 
'sh' sound that occurs as a result of the surface of the knob 
dragging against the felt as the VFO knob is spun. I've considered 
applying a light coat of mineral oil to the felt washer to quiet it 
down, but haven't tried it yet. NOTE: I am not recommending this; I was 
just thinking about trying it...

73, Dale
WA8SRA



On 12/13/2011 11:03 AM, Natan Huffman wrote:
> Hello All,
>
> Last Friday I took delivery of a new K3 along with a P3 and lots of
> accessories including Fred Cady's book on the K3.  Only problem to date is
> "noisy" VFO knobs.  The technique to lessen drag does decrease or eliminate
> the noise which sounds like fingernails dragged across a chalk board and I
> do find that noise most objectionable.
> Of course I can free myself of the noise by backing off the knobs but I'm
> left with no noise, and no drag at all.  So my choices are no noise, or no
> drag.  No drag leaves me with a
> surprisingly free turning VFO knobs that is problematical and proper drag
> leaves me with that horrible scraping which for me is simply intolerable.
>
> Has anyone come up with this same problem and has found proper mitigation
> solution?
>
> Thanks,
>
>
>
> Natan W6XR, C6AXR, VS6KR
> Freeville, NY
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Re: [Elecraft] K3(S) QSK Operation

[Dale Boresz]

Scott,

The new KSYN3A most definitely DOES resolve the old jitter issue. I updated
my both of my synths as soon as the new ones were available, and even
without QRQ engaged, the cw timing is jitter free. If the new KSYN3A did
nothing else, I'd have still bought them just for the great cw performance.

73,

Dale - WA8SRA


On Wed, Sep 6, 2017 at 10:25 AM, K9MA  wrote:

> ...
>


> It doesn't sound like the KSYN3A will solve this problem, though, whatever
> its other merits.  I've never found the phase noise of the original to be
> an issue, so it's hard to justify the expense.
>
> 73,
>
> Scott K9MA
>
>
>
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Re: [Elecraft] Perfect code

[Dale Boresz]

iagreecompletelywithstevewf3taboutnotrunningwordstogetherwhensendingcw
itmakescopymuchmoredifficultandyousurewouldntdothatsortofthingwhentypingtextorrespodningtoapostright?
ifyoutsrowinafewmisplwcedorincorrectlettersaswellwithoutcorrectingthemitmakesmatmersevenworhe

proper spacing between words is a wonderful thing!

73,

Dale, WA8SRA


On Fri, Nov 10, 2017 at 6:09 AM, Steve Steltzer via Elecraft <
elecraft@mailman.qth.net> wrote:

> Good morning gentlemen,
> As Kent and Gary said, timing is everything and sending perfect code
> should be the goal of every op. Of course we all make mistakes, even using
> a keyboard. We're human. But whatever speed you are at, please don't run
> words together! For anyone who copies by the word that makes copy
> difficult. And it's very common when a guy gets competent at 30/35 wpm and
> tries to push faster.
> 73,Steve, WF3T
>
>
>
>
>
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Re: [Elecraft] DXE NCC-2 & K3/K3s

[Dale Boresz]

Hello Gary,

I don't have an NCC-2, however I've been using it's predecessor, the DXE
NCC-1 (very effective product) with my K3 for about 6 years. I'd be glad to
share my experience with the NCC-1 / K3 combination.

73,

Dale - WA8SRA


On Fri, Nov 24, 2017 at 6:46 PM, Gary Smith  wrote:

> Does anyone have the DXE NCC-2 connected
> to their K3/K3s? I have a question as to
> how you have it set up.
>
> Thanks & 73,
>
> Gary
> KA1J
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Re: [Elecraft] K3 / RF gain - S meter issue

[Dale Boresz]

Hello Bruce,

Just to rule out any electrical or mechanical discontinuities in the RF
gain control itself, you can use the CONFIG > SW TEST > SCN ADC option to
examine the ADC reading as a function of rotation position for both RF gain
pots and both AF gain pots. In order to be able to see the "SW TEST"
option, you will first have enable  "TECH MODE"  by setting  "CONFIG > TECH
MD to 'ON'

Once you've selected SW TEST > SCN ADC, slowly rotate your rf gain control
from one extreme to the other while watching the 'steps' in the VFO B
display, looking for any sudden step changes. The values I observe run
contiguously from 002 at full CCW to 239 or 240 at full CW.

Good luck with your troubleshooting.

73,

Dale - WA8SRA


On Wed, Dec 13, 2017 at 4:25 PM, Bruce Meier  wrote:

> Looking for suggestions here from someone that might have experienced this
> same issue - -
>
>
>
> I have (2) K3 units (not the S model) that are acting different when the RF
> gain adjustments are turned fully counter clockwise.
>
> Ø  Unit one – s/n 1062: When the RF gain is decreased to full counter
> clockwise position the S-Meter registers full scale (60db over S9) as
> expected.
>
> Ø  Unit two – s/n 1193:  When the RF gain is decreased to full counter
> clockwise position the S-Meter registers only S8.
>
>  Facts:
>
> Ø  With the exception of the S-Meter readings with RF gain settings, both
> units are working fine
>
> Ø  Both units have ‘almost’ all mods installed.  If not all, they are at
> least both the same.
>
> Ø  Both units are running the same version of microcode (5.54) (2.88)
> (2.88)
> (1.26)
>
> Ø  Both units seem to register very close actual RF gain of stations when
> connected when tested on the same antenna
>
> Ø  Both units have the new synthesizers.
>
> Ø  Both units have second RX
>
> Ø  In both cases (both units) I can hear the audio level decreasing
> linearly
> as expected as the RF gain is turned counter clockwise
>
> I have tried to initialize the K3 and reload the firmware resulting in no
> change to the RF gain / S-Meter readings.
>
>
>
> Elecraft Tech Support suggested:
>
> Ø  Calibrating the s-meter – did nothing
>
> Ø  Next suggestion – send the rig to California.
>
>
>
> Anyone have this issue and fixed it??
>
>
>
> 73,
>
> Bruce N1LN
>
>
>
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Re: [Elecraft] New PX3 - question on a signal that doesn't move

[Dale Boresz]

Jeff,

Do you by chance have ATTN on the KX3 engaged? If so, turn it off, and turn
on the PREamp on the KX3. That should eliminate the peaks in the PX3 that
you are seeing.

73,

Dale - WA8SRA


On Fri, Dec 29, 2017 at 4:07 PM, Thorpe, Jeffrey 
wrote:

> Ok - finished doing the Opposite Sideband Nulling. (Also made sure the
> plugs were seated properly.)
>
> The signals still show on the PX3 display, but not as strongly.
> I’ve checked it on all bands and each band has at least one of these
> signals, some have up to six showing (with span set to 50.)
> The placement of the signals is not the the same from band to band,
> however no signal is less than 12khz from the center frequency. Again,
> tuning up or down within the band does not affect the displayed signal.
>
> Any ideas?
>
> Jeff - kg7hdz
>
> > On Dec 22, 2017, at 3:35 PM, Don Wilhelm  wrote:
> >
> > Jeff,
> >
> > Have you done the Opposite Sideband Nulling (page 26 in the manual).
> > Make certain the RX IQ plugs are fully seated at both ends.
> > See Trobleshooting on page 33 in the manual.
> >
> > 73,
> > Don W3FPR
> >
> >> On 12/22/2017 5:15 PM, Thorpe, Jeffrey wrote:
> >> Probably a dumb question. New to using pan adapters, and just got my
> PX3 put together.
> >> I hooked it up to my KX3, tuned around on 40m (using a home-brewed
> AS-2259 NVIS type dual dipole for 40m and 80m) and I get really strong
> signal indications close to 19khz both above and below the center frequency
> on the display. It doesn’t matter where I tune in the band. If I adjust the
> scale, the signals stay at the +/- point of about 19khz. They appear
> stronger than any other signal in the display.
> >> I am running the KX3 off internal batteries, and the PX3 off a LiFePO4.
> >> Are these signals from something outside being picked up in the cables
> between the KX3 and PX3, a problem with the PX3, or something else (like,
> maybe, me)?
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Re: [Elecraft] P3 showing sigs on Aux antenna in diversity mode?

[Dale Boresz]

Hello Bill,

It *seems* to me that the following would achieve your goal, but the
gazillion cables behind the radios at this wireless station discourages me
from attempting to pull the K3 out away from the wall far enough to
actually try it.

-- Disconnect your low-noise rx antenna from the K3 'AUX RF' input, and
connect it instead to the K3 RX ANT 'IN'.
-- Then, engage the "RX ANT" button on your K3. You will then be listening
to your low-noise rx antenna on the main receiver, and that is what will be
displayed on the P3.
-- Then, use a BNC-to-BNC jumper cable to connect the K3 RX ANT 'OUT' to
the K3 'AUX RF' input. That will let you listen to your noisy TX antenna on
the 2nd receiver, the output of which will not be displayed on the P3.

73,

Dale - WA8SRA


On Sat, Dec 30, 2017 at 7:25 PM, Bill Conwell  wrote:

> For 160, I've got a noisy TX antenna, and a quiet RX antenna.  I sometimes
> run them in diversity mode, with TX antenna connected to K3's ANT1 port,
> and RX antenna connected to AUX port.
>
> Diversity works fine.
>
> But the P3 shows the IF from the noisy TX antenna - in which many weak
> stations are obscured by noise.
>
> Is there any configuration by which I can get P3 to show, instead, the
> signals from the quiet RX antenna (connected to AUX input)?
>
> Tnx,
>
> /Bill, K2PO
> Portland OR
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Re: [Elecraft] KX3 suddenly putting out no audio on SSB......loud static on FM as usual

[Dale Boresz]

Hello Mark,

Just a guess, but could your RF Gain have been inadvertently reduced
significantly? That could render CW, SSB and AM inaudible while still
allowing FM hiss, assuming it was not being otherwise squelched.

73,

Dale -- WA8SRA

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personal interests and the making of their own private fortunes."

-- Ayn Rand



On Sat, Jan 13, 2018 at 1:22 PM, Mark Tosiello  wrote:

> Hi,
>
> I have no idea what is going on, but I probably simply misconfigured
> something. I have a KX3/PX3/KXPA100, and I was using it happily yesterday.
> Earlier today, I disconnected it to measure for my pelican case, but
> reconnected everything and double checked the connections as I always do.
> Everything powers up normally including the amp with the special cable, but
> there is COMPLETE silence on SSB and CW modes, and just static on FM as
> usual.. Turned the radio back off and on, nothing. Upgraded the firmware,
> no change. A setting was probably changed last time I used it, but I can't,
> for the life of me, figure out which. The sidetone is nice and loud on CW,
> but tuning up and down on CW or SSB produces nothing but silence, no
> headphone or speaker output at all.
>
> I'd appreciate it if you good folks could help me out.need to get back
> on the air
>
> Thanks!
>
> Mark KD8EDC
>
> --
> ___
> *“Capitalism is the extraordinary belief that the nastiest of men for the
> nastiest of motives will somehow work together for the benefit of all.”*
>
>  ― John Maynard Keynes
>
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Re: [Elecraft] Off topic: speaker boxes

[Dale Boresz]

Hello Bill,

Placing even an excellent quality driver into an arbitrary speaker box
without consideration of box volume and the 'Thiele/Small' driver
parameters (from memory, I think they are Vas, Qts, and fs -- but it has
been many, many years ...) will likely produce very disappointing results.
That is especially true if the box is ported as opposed to sealed because
the tuning of the port/vent is critical and will have a significant effect
on the ultimate frequency response and 'Q' of the system, particularly in
the lowest octave.

No doubt all of that critical system design work has already been done and
optimized on the SP3!  ;-)

73,

Dale - WA8SRA



On Sun, Feb 4, 2018 at 7:36 PM, Bill  wrote:

> I shop at Amazon on a very regular basis. That said, I would never have
> expected to find a huge assortment of speaker boxes listed. You can
> populate them with the speaker(s) of your choice. To me this is
> interesting, as I am getting ready to redesign my radio desk and am
> thinking of a couple of SP-3s.
>
> Bill W2BLC K-Line
>
>
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Re: [Elecraft] [K3] need help with hiss on ssb receive

[Dale Boresz]

Bill,

What is your setting for AGC - THR? It sounds like you may have it set 
to a low value. I have mine set to 20 (you'll need recent firmware to 
enable this), and find that setting the AF gain to a comfortable 
listening level positions the background band noise way down for all but 
the very weakest of signals. Yes, you'll end up riding the AF gain a 
bit, but the audio sure sounds great.


73, Dale
WA8SRA


On 11/24/2012 2:59 PM, Bill Clarke wrote:
Hiss is my biggest complaint regarding my K3. To cut down the 
irritation I send the audio to a pair of Behringer amplified studio 
speakers and cut back on the highs on the internal speaker equalizer. 
I also have played considerably with the K3's RX Eq and with the AGC. 
Further, I have set the AGC back so that it does not immediately rise 
the background noise when a loud signal stops. Don't forget to add the 
ATT into the mix - it can really help when the noise is bad.


The "noise" is, to me, the background band noise - with QRM and QRN. I 
live in a rural area where the typical daytime noise level is less 
than S1. At that level, I don't think there should be anything coming 
from the speakers. When the bands are noisy - well, simply put, the K3 
is hard to continue listening to.


I have listened to a TS590 and it IS a quieter receiver and more 
pleasant to listen to for hours at a time. I own a couple of TS480s 
and they are both more pleasant to listen to in the long run. All that 
said, my settings have brought the K3 to _nearly_ as good as the 
Kenwoods - which is _nearly_ acceptable. To be fair, both the Kenwoods 
and the K3 need operator made menu settings to attain the desired RX 
audio.


I have the P3 and some extra SSB and AM filters and boards - so I am 
deep into life with the K3. Everything is extra on the K3 (filters, 
SWL listening, AM, tuner, etc.) - but - - -after about $3600 I have a 
rig that is about equal to the TS590. Ya Ya!  I know that is a harsh 
statement, but for my purposes it is quite accurate.


I operate only on 160, 75, and 40 meters. Nets and rag chew. Hence, I 
enjoy serious armchair copy.


Someone asked the other day if I would rather have a 590 and I replied 
in the affirmative. However, I am not about to take a thousand dollar 
licking as punishment for having wanted a USA made product. 
So I'll be keeping my K3.


Bill W2BLC

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Re: [Elecraft] Sub RX no work

[Dale Boresz]

Mike,

I had a similar issue, and after I re-ran the KSYN3 calibration a second 
time, all was well. In retrospect, I think I may have inadvertently 
stopped it the first time around.


73, Dale
WA8SRA



On 11/28/2012 5:51 PM, Mike Sanders wrote:

Greetings All, Well I have just installed a sub RX in a late
K3 (67xx). Before I go back into the radio and quadruple
check my work I just have to ask if I am missing something
in config.
I have audio and control of the sub RX and can even hear
signals through it but very very weak compared to the Main.
All seems OK but just very poor RX. I have selected the
ATU as source of antenna and have my connections there.
(I will go in later and see if I have any thing mis/dis connected).
Am I missing something in config? I have two filters installed
in the sub and NO BPF. No error messages and again it
seems to respond to everything input to it. Even receives
just poorly. Thanks for any help.  73, Mike


 Mike Sanders
  KØAZ



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Re: [Elecraft] K3 + Icon

[Dale Boresz]

Paul,

In CW mode, the "+" icon indicates that QRQ mode is active. You can 
toggle it on or off via the Config menu option "CW QRQ"


In SSB mode, the "+" icon indicates that ESSB is enabled. You can toggle 
it on and off via the Config menu option "TX ESSB". Tap '1' to turn it 
on and off.


It may have other meaning in other contexts or modes, but these are the 
only two of which I am aware.


73, Dale
WA8SRA


On 12/4/2012 9:11 AM, Paul VanOveren wrote:

Somehow I now have the "+" icon on the display, lower right, between the
Bvfo and the T for the CW text decode.  I know not of how I put it there
and want to know how I turned  it on, and how I can turn it off.
Tnx,
NF8J
Paul VanOveren
5911 Snow Av
Alto, Mi 49302
(616) 868-7149
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Re: [Elecraft] KX3 and Edirol FA-66 ?

[Dale Boresz]

Jan,

I don't have a KX3, however prior to getting the P3, I was using NaP3 
with an FA-66 and LP-PAN w/ the K3. It worked well, but I had to use the 
Windows WDM-KS driver in order to get the panadapter display to work. I 
no longer have it connected, but I do have a printout of a screenshot of 
the NaP3 setup screen showing that the 'Input' was set to FA-66 In 2 and 
the 'Output' was set to FA-66 Out1. Hope this is helpful.


73, Dale
WA8SRA

On 12/8/2012 9:40 PM, Jan wrote:

Anyone using ths KX3 and FA-66 with NaP3 software?
I have it "partially" working ~ rig control BUT no Panadaptor
Cheers, Jan K1ND
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Re: [Elecraft] Poor AM audio

[Dale Boresz]

Dave,

The fidelity will improve significantly with the wider filter. Regarding 
the distortion, try backing off on the RF Gain control a bit and see if 
that helps. It does here. You might also find that there is less 
distortion with Synchronous AM detection engaged.


73, Dale
WA8SRA

On 12/30/2012 9:42 AM, Dave Purola wrote:

I just received and assembled my K3 about a week or so ago, I only have the 
2.7Khz. filter that was shipped with the kit. I love the operation on SSB and 
digital modes BUT, when listening to the DX60 AM net the audio is quite 
distorted. I started out with the filter set to NORMAL and then made it as wide 
as possible untill the display reads 5.00. Is this normal to have the distorted 
audio untill I purchase the 6.00 Khz. filter? I quess I'm disapointed or am I 
doing something wrong? The operators manual does not say any thing about the 
distortion, only the fidelity will be increased with the 6.00 Khz. filter.
  
Dave Purola,

N8NTA
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Re: [Elecraft] K3 RF Gain Contol

[Dale Boresz]

Have you run the "Calibrate RF GAIN" procedure from the K3 Utility 
(Calibration tab)?  It will linearized the response of the RF gain 
control. Also note that per the manual, this procedure should be run 
*before* you Calibrate the S-Meter, so if you do run the RF Gain 
calibration, you may wish to go through the S-Meter calibration steps 
(detailed in the K3 User Manual) again as well.


73, Dale
WA8SRA


On 1/13/2013 6:06 PM, kis...@me.com wrote:

I just noticed that when I adjust the RF gain control just passed the 3 o'clock 
position the apparent volume jumps considerably.  Is this normal?  Is it a 
function of ACG settings? Thank you.

K6CG


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Re: [Elecraft] Using monitor on K3

[Dale Boresz]

Ron,

Go to CONFIG:TX MON, and change the setting from 'FAST' to 'nor'. You'll 
then hear a closer representation of what your transmitted audio sounds 
like (with a small amount of latency).


73, Dale
WA8SRA


On 1/23/2013 12:44 PM, Ron Midwin wrote:

I use my monitor regularly when I'm using headphones, and can hear myself.

someone mentioned that there is a way to configure the monitor control such
that there is a delay, which allows you to hear what you really sound like?
  Kind of like listening on another receiver?

I have a single receiver and use an LP Pan Adapter.

comments?

thanks
AE6RH
A/N 1997



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Re: [Elecraft] I am confused… or maybe its just a brain fart...

[Dale Boresz]

Phil, is your AGC turned off?

73, Dale
WA8SRA

On 1/23/2013 2:00 PM, Phil Townsend Lontz wrote:

My K3 SR # 4636 with
MCU 4.60
FPF   1.15
DSP  2.80

I was on 20 meters CW and touched the NR button to engage the noise reduction 
but
the display said N/A….
What?
Is that right?
It seems to me that it has always worked...
OR am I just confused???

The NB works just fine BTW

Phil
K5SSR
Santa Fe
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Re: [Elecraft] K3 RF gain "kicks in" rather than smooth increase

[Dale Boresz]

Stan,

I'd suggest that you (re)run the "Calibrate RF GAIN" procedure in the K3 
Utility. That resolved the issue for me.


Dale

On 2/13/2013 4:22 PM, Stan AE7UT wrote:

When turning the RF gain from minimum to about 9 o'clock there is a jump
where it
seems to turn on rather than a smooth transition.  It works as expected and
I didn't
think anything of it really until I got my sub-receiver placed.  The
sub-receiver RF gain
acts like I have experienced on other rigs (a smooth increase in gain).
This maybe totally normal.  Just wondering if it's "normal".

I often use a rather high AF gain and use the RF gain to set the volume.  On
other rigs
this seems to be the best for noise abatement.  The K3 does not seem to
resond to
this as well as prior rigs of mine - specifically the Orion II.  Not that I
would ever, ever,
ever, ever, ever, ever, ever want to go back.  I love my K3.  Far superior
in my mind
to any rig I have used.

73
Stan AE7UT



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Re: [Elecraft] XV144 help please

[Dale Boresz]

Bob,

I use the XV144 here w/ my K3, and my Config:xvtr power is set to 
"L1.00", and that will easily drive the XV144 power LED's into the red. 
I suspect the issue is not with your K3 settings, but rather with the 
jumpers inside the XV144 and the setting of R22 that acts as an input 
attenuator.


73, Dale
WA8SRA

On 2/21/2013 3:39 PM, kd...@denstarfarm.us wrote:

Howdy K3' people:

I finally got one of my two 15 el 144 yagis up and thus could try
hearing and sending on 2m.

I set Band 144 off, so I think that means it looks for the XV144 though
I do not have internal 2m anywaY,

However I have heard nobody and the guys wgo tried are a few hundred
miles away and may not be heard by me anyway.

I have a Daiwa wattmeter of questionable quality at 144.

It says key-down I have 5w out. The 7w green LED lights on thr
transverter.
I have Config:xvtr power to "L1.50mw" .

I am not seeing any measurable SWR where I did when I tried my long-wire
  for reference (duh).

shouldn't I see 20 watts out of that baby? I believe Don did when he put
it together.

At moment I have but one transverter in the line; others are not wired
in, are removed for the test. Their settings were set to "off" also.

So: XV144 7w Green LED is all I get, sometimes  the 10w Green LED toggles over.
Daiwa says 5 watts out.


thanks



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Re: [Elecraft] P3SVGA or LP-PAN / NaP3 (K3)

[Dale Boresz]

Paul,

I started with the LP-Pan and NaP3, and it worked very well. I now have 
the P3SVGA and like it a *lot*.


For some context, I only used 'Fixed Tune' mode with both scenarios, and 
generally limit the displayed bandwidth to somewhere between 30-50KHz.


The P3 screen, though it is small, is very sharp and (IMHO) easy on the 
eyes when other supporting factors (nature or your glasses) can provide 
the proper focus for the required viewing distance. The external monitor 
provides an outstanding large-screen enhancement that makes everything 
easier to see, but the really big 'plus' to the external monitor for me 
is the much longer 'history' capture of the slower and taller waterfall 
display - over the smaller P3 screen. Additionally, the external monitor 
can be configured to show multiple rows of decoded RTTY (and I think CW) 
text beneath the waterfall. Very cool!


The P3SVGA also has a USB connection that enables you to plug in a 
keyboard or a wireless keyboard receiver for RTTY and PSK. It may work 
for sending CW from the keyboard as well, but I'm not sure about that 
one. (Although I operate about 90% CW, I only use paddles, and don't use 
the CW decoder, so am not up to speed on those options)


The one downside to the P3SVGA  is that a Noise Blanker is not a current 
option for the built-in SDR receivers in the P3/P3SVGA. I frequently 
have to battle power line noise around here until the local power 
company gets around to resolving them, and when the poles are roaring, 
all I see on the P3 display(s) is a noise floor that is elevated to 
around -90 dBm or so, with only the strongest of signals making their 
presence known. The NB on the K3 is so effective that with it engaged 
and properly adjusted, I'd never even know that the powerline noise was 
still there -- however I may as well turn off the P3 because it shows me 
very few of the signals that I can otherwise hear on the K3. Perhaps a 
noise blanker can eventually be implemented into the P3SVGA firmware at 
some point. That would be a huge help.


 I see two primary advantages offered by the LP-PAN/NaP3 combo:
1.  The effective NB functionality built into PowerSDR quiets the bands 
very nicely for most powerline and other impulse noise conditions.


2.  The ability to click-tune the K3 via a mouse, is very nice -- though 
I have gotten pretty good at twisting the K3 knob to get me where I want 
to go in a hurry. One can also use the P3's marker/click-select to do 
the same thing, but it's not as fast as mouse-clicking on a signal on 
the panadapter display.


That said, the LP-PAN remains on the shelf, and my overall preference by 
far is the P3SVGA, though I have been thinking about adding the 
LP-PAN/NaP3 combo back into the mix for those occasions (like now) where 
I'm waiting for the power company to resolve an issue.


73, Dale
WA8SRA



On 2/21/2013 5:51 PM, paul ecker wrote:

First, I looked in the archives and didn't really find an answer. I have a K3 
and P3 and love the combination, but seeing a P3 with a P3SVGA card in action 
at Orlando Hamcation, I have been considering adding the P3SVGA card to my P3. 
But have read some articles about the LP-Pan and I am interested in opinions on 
overall capabilities of P3/P3SVGA combo vs. LP-Pan/NaP3 combo. The individual 
items are roughly the same price. (I understand that an external sound card 
will be needed with LP-Pan) So can anyone who has experience with each, give 
some opinions on  the pluses and minus of each terms of capabilities, and 
recommendations on which way to go?

73 Paul
kc2nyu
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Re: [Elecraft] P3SVGA or LP-PAN / NaP3 (K3)

[Dale Boresz]

Hi Knut,

Just a little clarification for those who may not be familiar with the 
details of the P3/SVGA:


The P3/SVGA combo is used independent of a computer. The monitor 
connected to the P3/SVGA *may* be the same monitor that you have 
connected to a computer -- but it cannot be used simultaneously WITH the 
computer. A switch (either built-in or external to the monitor) would 
select the source of either computer or P3/SVGA.


On the other hand, using LP-PAN/NaP3 *requires* A computer (with a 
decent sound card) and monitor -- though it does not have to be an EXTRA 
computer and monitor, as you demonstrated with your screenshot showing a 
variety of ham radio applications running alongside NaP3.


73, Dale
WA8SRA

On 2/23/2013 11:52 AM, ab2tc wrote:

Hi all,

You do not need an extra computer or display for use with LP-Pan. This is my
usual operating screen on a 21" LCD monitor:

http://ab2tc.getmyip.com/MyOperatingScreen.png

That is from operating in the French contest this morning.

Knut - AB2TC


Matt Zilmer wrote

I own both.  The P3 is by far the better integrated solution.  Adding
the SVGA to it is a good idea and very useful for a number of
functions (decode display mainly), but primarily for the higher
resolution and ease of use in a shack setting.





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Re: [Elecraft] voice transmit gain

[Dale Boresz]

Hello Ricardo,

It's under the Main Menu. Tap the 'Menu' button, then find the 'MIC SEL' 
menu option.


From the manual: "Tap '1' to toggle between .Low and .High mic. gain 
range for the selected mic.."


73, Dale
WA8SRA

On 2/23/2013 5:30 PM, Ricardo - PY2PT wrote:

Dear Guys,

Do you when where can I find the voice transmit gain on K3 Menu?
I did not fint it.

Best regards



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Re: [Elecraft] XV144 drops power if "PWR" is moved during xmit in USB mode

[Dale Boresz]

Bob,

Just another data point ...

I also run the XV144 w/ my K3. I tried your test in SSB mode and CW 
mode, and in both cases, turning the PWR knob on the K3 while modulating 
or key-down (on cw) simply changes the power to the xvtr as evidenced by 
the change in the number of LED's that are lit. I was unable to cause it 
to just drop as you have experienced.


73, Dale  WA8SRA


On 2/26/2013 11:41 AM, KD7YZ Bob wrote:

Howdy K3' people:

Here's another anomoly I can not figure out.

Thus by the way does NOT happen with my xv432 module.

Put xv144 in USB mode.

Use WSJT9 and put it in echo mode.
Set it to "Auto On" which simply sends a few seconds of a single-note
Tone then waits to see if something comes back from the moon.  Then
transmits again, then listens .. and so forth.

I was looking at the LED bars on the XV144 and decided to up the power.
As soon as my fingers touched the PWR knob, the XV144 ceased output,
verified on watt meter also.

WSJT9-echo-mode waited then transmitted again. No power out.

Stopping WSJT9 and restarting di not help the lack of power out of the
xv144.

However, if I held-down "XMIT" ... to Tune, then instantly the LEDS all
it up and the watt meter was happy.

So I went to the WSJT9 window and pressed to Auto-run again. Echo
mode started with full power from the xv144 transverter.   I let it go
ten or fifteen times.

Then I touched the PW knob and began the who sequence all over ... no
power out.

So I switched Bands to 28 ... started Echo Mode and it went thru its off
and on sequences a few times.

Then I rotated the PWR knob on the K3 and the Power FROM the K3 varied as
much as I had the patience to rotate the PWR knob.

But, as I said, I could not replicate this on the XV432.

Next I set Mode to SSB and used a microphone/headset to produce speaking
and whistle-tones.

While I was pinning the meter, so to speak, which whistles, I rotated
the power knob and Voila!!! reduced or no power. Ever again .. until I
held XMIT (Tune).

Thereafter I could key the K3 and shout in the heil headset to make 25
watts out appear.

Until I rotated the knob and the xv144 transverter ceased output.

This is repeatable on the xv144.







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Re: [Elecraft] P3 New Features

[Dale Boresz]

Agreed!

The combination of mouse-based point-and-click tuning within the stable 
context of the P3's fixed-tune mode, would be a powerful asset.  This 
can currently be achieved with the LP-PAN/NaP3 combination, but it would 
be great to have that capability without the requirement of a separate 
computer.


73, Dale   WA8SRA

On 2/28/2013 5:12 PM, Ian White wrote:

...

If Elecraft can move on to make that same USB port function with a mouse as
well, allowing point-and-click tuning (left click moves VFOA, right-click
moves VFOB) that would leave the PC-based SDRs with very little competitive
advantage.

  
73 from Ian GM3SEK






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Re: [Elecraft] OT P3 question

[Dale Boresz]

Sam,

I doubt the K3's front end is being overloaded. Since you're observing 
this in peak-hold mode on the P3, start at the *top* of the pedestal and 
note how wide the signal is. Then, move down the pedestal to where the 
signal begins to widen out. How far down do you get before it begins to 
get significantly wider? If it's about 30 to 35 dBm below the maximum 
signal level, then you're probably hearing and seeing fairly typical 
(unfortunately) ssb transmission artifacts.


That S9+40 signal, will start to broaden out at probably around S9+5 or 
so, and the S9+60 signal will probably begin to broaden out at S9+25. 
Additionally, if they are over driving their amplifiers, the point at 
which their signal begins to widen could be higher than this. Six 
S-Units is 36 dB. If this signal was right at S9 (rather than S9++), the 
signal would likely begin to broaden at about the S3 level -- which on 
80m may actually be below your noise floor -- so you'd never see it.


You may want to consider using a device like the DX Engineering NCC-1, 
which can do a superb job of cancelling local noise sources. I would 
suspect that it would also do an excellent job of significantly reducing 
the level of these signals (though not both at the same time).


73, Dale  WA8SRA


On 2/28/2013 10:46 PM, Sam Morgan wrote:

I have a couple of hams living .7miles and 1.3 miles from me.
On my P3 they both appear 6-8+ kc wide when viewed using the Peak 
function.

They both run different amps varying in power from 400w to 800w

I have spoken with them over the phone and while watching their signals
they are able to cut down their audio to where they are only 3kc wide.
One is still bumping S9 +40 and the other S9 +60 on the K3.

They seem to think their audio is to low at that point,
even though they are still given good reports out 300-600mi (on 80m)

My question(s)
they seem to think the only reason they appear that wide is because 
they are over powering my K3s front end. I think they are over driving 
their rigs audio.


any comments on what could be happening here?
Is it my K3/P3's fault they look that wide,
or are they just wanting to see their meters swing up higher than they 
should,

and so are actually over driving their rigs?

TIA


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Re: [Elecraft] Beam antenna question

[Dale Boresz]

I agree 100% about the hex beam; I had the original Traffie 20m monobander
and now have the K4KIO broadband 5-band hex beam. Both work extremely well
on their designed bands. However --  it has been my experience that a
5-band hex beam works great as a very low-noise receiving antenna on 40m
and 80m, especially when used as one of the antennas in a diversity receive
configuration with the K3. Not surprisingly, the hex beam exhibits no
directivity when used as a receiving antenna on 40 & 80m.

73,

Dale - WA8SRA


On Fri, May 19, 2017 at 8:12 PM, Tony Estep  wrote:

> On Fri, May 19, 2017 at 7:04 PM, Ian  wrote:
>
> > ...have you consider one of
> > the many hex-beams that are available? ... I have a 5-band model...
>
> ===
> What Ian said! I put up a 5-band hex-beam on my chimney, 21 feet off the
> ground. The results were terrific. My model came from DX Engineering, and
> I'm sure there are other good ones. With that antenna and 500 watts, I
> found that I could succeed in just about any pileup. Highly recommended.
>
> 73,
> Tony KT0NY
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Re: [Elecraft] Diversity and RF/Vol Controls

[Dale Boresz]

Hello Rich,

I have been using diversity reception on the K3 on 40m for years, and can
control both RF gains separately, and the AF Gain controls are set so that
the larger one acts as a balance control, and the smaller one acts as a
master volume control for both simultaneously (however that can be changed
to independent AF gain controls if that is your preference).

Some of the relevant menu settings (though probably not all) are set as
follows on my radio:
SQ SUB : 00 (Fully CCW)
SQ MAIN: 00 (Fully CCW)
SUB AF : BALANCE  (for the balance/master gain scenario I described above)
-- or --
SUB AF : nor (to enable individual control of the AF Gain for the Sub and
the Main RX)

Hope this helps.

73,

Dale - WA8SRA



On Wed, May 24, 2017 at 7:02 PM, Rich  wrote:

> Yes SPKRS is set to 2.   I get nothing in my left (sub) speaker during
> diversity.   The left spkr works fine when I use the Sub and Main RXs
> separately.
>
> rich
>
>
> On 5/24/2017 18:42 PM, John Nogatch wrote:
>
>> ...Diversity mode does the Main RF gain and Main AF take over for both
>>> receivers?  At least that appears to be the case...
>>>
>>> Hence the Sub RF gain and Sub AF have no function at that point?
>>>
>> Check that CONFIG: SPKRS is set to 2
>> otherwise it will behave as you described.
>>
>> Also, you need to have 2 speakers, and/or stereo headset.
>>
>> -John AC6SL
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Re: [Elecraft] PX3 Problem?

[Dale Boresz]

Dave, make sure that the preamp is engaged on your KX3. If the preamp is
off and you are receiving on a quiet band, you'll see "stuff" that would
normally be covered by the band noise. Turn on the preamp, and the
artifacts that you're seeing should be pushed below the noise floor of just
about any band.

73,

Dale - WA8SRA


On Sun, Jul 16, 2017 at 6:06 PM, Dave Sublette  wrote:

> I have had my PX3 for a little over a year (I think).  It has been used
> sparingly.  Until this afternoon, it has worked perfectly.  Now I see a
> spike in the center of the display and periodic spikes across the entire
> screen. Almost all are symmetrical in frequency and amplitude about the
> center line. There are some that are not symmetrical.  I have plugged and
> unplugged all the cables, taking care to see that each is fully into the
> socket.
>
> So, perhaps I have a failure that requires returning to Elecraft?  Have
> any of you had the same experience?
>
> 73,
>
> Dave, K4TO
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Re: [Elecraft] PX3 Problem?

[Dale Boresz]

Hello Dave,

Just checked my KX3/PX3 and with no antenna, I am also seeing spur peaks
about 25 to 30 dB above the noise floor.

With the PX3 SPAN set to 30 KHz:

On 20 meters, when I turn the preamp ON (20dB preamp setting), and connect
my HexBeam, I only see 20m band noise at about -112 dBm; there is no sign
of the spurs. If I turn the preamp OFF, then I do see some of the spurs
about 5 - 8 dBm above the noise floor.

To provide some idea of my actual noise floor on 20 meters, my P3 indicates
-124 dBm (also with a SPAN of 30 KHz), and three other SDR radios also read
-124 dBm on their respective panadapter displays, each set to a span of 30
KHz.

Do you still see any of the spurs with your antenna connected on 20 meters,
and the 20 dB preamp engaged?

73,

Dale - WA8SRA






On Sun, Jul 16, 2017 at 10:47 PM, Dave Sublette  wrote:

> Using just one of 20 “extra” spurs, I measuredthe spur peak at -90 with
> the preamp on. Base line is -125 with it on.
>
> Turning off the preamp, the peak is -75, base line -112.
>
> The s/n remains basically with preamp on and off.  The main thing is,
> Those spurs were not there previously.
>
> I just took the PX3 out to the shop and hooked it to another supply.  The
> spurs are still there.
>
> Dave
> > On Jul 16, 2017, at 10:22 PM, Don Wilhelm 
> wrote:
> >
> > Dave,
> >
> > The KX3 is designed to be operated with the preamp on most of the time.
> The only reason to turn it off is when extremely strong signals are
> encountered.
> >
> > The preamp eliminates many spurious signals that are actually out of
> band due to its signal rejection "filtering".  That has nothing to do with
> the sensitivity, and it can kill extraneous results such as you are seeing.
> >
> > If it makes those responses substantial with the preamp on, then there
> may be a problem to be addressed.
> >
> > 73,
> > Don W3FPR
> >
> > On 7/16/2017 10:07 PM, Dave Sublette wrote:
> >> Good point.  However I am on 20 meters, which really doesn’t need the
> preamp.  Besides, the spikes are 40 dB high or so.  No, this behavior is
> definitely looking like a failure.  I have one more thing to try.  I will
> carry it out to the shop in my garage and plug it in.  If it is the same
> there as in here, it’s not any external influence.  Thanks for hanging in
> there with me.
> >> 73,
> >> Dave
> >>> On Jul 16, 2017, at 9:56 PM, Dale Boresz  wrote:
> >>>
> >>> Dave, make sure that the preamp is engaged on your KX3. If the preamp
> is off and you are receiving on a quiet band, you'll see "stuff" that would
> normally be covered by the band noise. Turn on the preamp, and the
> artifacts that you're seeing should be pushed below the noise floor of just
> about any band.
>
>
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Re: [Elecraft] 1 Khz filter

[Dale Boresz]

Hello John,

It's used for CW. I have a pair of them (main and sub rx) and find that CW
sounds more pleasing through this filter. I operate about 90% CW and I use
this filter most of the time, engaging narrower filters only when it
becomes really necessary.

73,

Dale -- WA8SRA

On Tue, Jul 25, 2017 at 3:49 PM, j...@kk9a.com  wrote:

> What is this used for?
>
> John KK9A
>
> From: Ralph Matheny K8RYU
> Mon Jul 24 16:30:29 EDT 2017
>
>
> Anybody got a 1 Khz filter for K3 they wanna sell??
>
> de K8RYU
>
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Re: [Elecraft] external waterfall

[Dale Boresz]

If you want to turn off just the waterfall on the external display, you'd
use the P3 "SVGA menu" > "SVGA WfEn" menu option. With that "SVGA WfEn"
option showing, tap the "SELECT" knob, and then ROTATE the SELECT knob
until you see "Waterfall off". Then tap the SELECT knob to save your change.

73,

Dale - WA8SRA


On Mon, Aug 7, 2017 at 4:00 PM, Smith B.  wrote:

> How do I turn off waterfall on external monitor?
>
> Smith B.
> W9HAK
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.
> nabble.com/external-waterfall-tp7633173.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] P3 cursors

[Dale Boresz]

Hello Fred,

That "+" symbol indicates that QRQ is ON. You can turn it ON or OFF via 
the Config menu option "CW QRQ"

73, Dale
WA8SRA


On 5/19/2012 11:43 AM, Fred Jensen wrote:
> ...
> Now, if I can just figure out what the "+" in the lower right corner 
> of the main display is telling me ... 73, Fred K6DGW - Northern 
> California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - 
> www.cqp.org 
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[Elecraft] [K3] RX Loop gain setting

[Dale Boresz]

I'm using a small DEMI 6m preamp in the RX In/Out loop of the KXV3A, and 
would like to be able to inform the radio of its gain so that the 
S-meter and rx noise floor would accurately reflect the improved noise 
figure due to the preamp.  (s-meter reading would not be inflated, and 
the lowered noise floor would be evident in both the s-meter and the 
buffered IF output of the KXV3A)

Is that possible?

73, Dale
WA8SRA
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Re: [Elecraft] odd symbol

[Dale Boresz]

On CW, it means QRQ is enabled. Its availability is controlled via:
CONFIG: CW QRQ (On/OFF)

73, Dale
WA8SRA

On 6/6/2012 2:42 PM, Bruce McLaughlin wrote:
> Recently I noticed a new symbol has appeared on the LCD of my K-3. It is a 
> plus symbol + which is at the bottom right-hand side of the LCD. I don't 
> recall seeing it there before now. Does anyone know what it means? And how I 
> could remove it? It does not seem to have impacted the operation of the K-3 
> but since it is not something I have seen before I think I would rather see 
> it disappear. I have looked through the owners manual but I can't seem to 
> find any reference to it other than the page which shows all of the symbols 
> that might appear on the LCD and it does appear to be in the lower right-hand 
> corner. Unfortunately, I can't seem to find an explanation for it
>
>   Bruce - W8FU
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Re: [Elecraft] New K3 owner needs help

[Dale Boresz]

The PR40 may benefit from the microphone preamplifier that is built into 
the K3. To access it, tap the 'Menu' button and rotate the VFO-B knob 
until you see "MIC SEL".

Once there, you have a couple of options:
- GAIN RANGE:
Tapping the "1" button on the keypad will toggle the microphone gain 
setting between .Low and .High, where .High provides significantly more 
gain.

- MICROPHONE PREAMP:
Tapping the "7" button on the keypad will toggle the microphone preamp 
on and off.

Although both of the above can increase the available gain for the 
microphone, it's been my experience that if you find you need the 
additional mic gain, it's better to get it from the Microphone Preamp 
(7) (with the Gain Range set to Low) -- rather than by setting the Gain 
Range (1) to High.  Just my opinion. I'd suggest you experiment by 
transmitting into a dummy load while monitoring your signal on another 
receiver.

73, Dale
WA8SRA

On 6/16/2012 9:41 PM, ac8jd wrote:
> I am a CW 95% of my operating time.  I have the CW side of this rig pretty
> down pat.  And it is really a great rig for that!
>
> I am however having trouble with SSB.  I have a PR40.  I bought the correct
> cable for the PR40 for the K3 from Heil.  I have the ALC and COMP dialed in
> just fine, but when I transmit on SSB I get less than half the RF power from
> what I have the rig set for.  (K3/100).  I also noticed that the RF meter on
> the K3's front panel doesn't even budge when I TX on SSB.
>
> Any help would be appreciated.  I don't get on SSB much but when I do, I do
> it to Rag chew with friends.
>
> TNX,
> AC8JD
>
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Re: [Elecraft] more Bass in K3 with PR-40

[Dale Boresz]

Keep in mind that the PR 40 microphone is very sensitive to 'proximity 
effect' (where close-talking the microphone results in a significant 
rise in low frequency output). I'd suggest that you keep at least 3 to 4 
inches away from the microphone while speaking, and keep that distance 
*constant* as you experiment with your K3 TX EQ settings.

73, Dale
WA8SRA

On 6/19/2012 8:18 AM, ac8jd wrote:
> I have had this K3 up on the air for a few days now.  I would be curious to
> know how I can get more "lows" or "bass" out of the TX on SSB with my PR-40.
> The audio reports I get from other stations are that I have a lot of "highs"
> and they can't open up their filter to get enough bandwidth on my signal to
> make it sound "lower".
>
> I have the TC equalizer set according to Heil's website for the Pr-40
> http://www.heilsound.com/amateur/dspsettings/all_elecraft.php
>
> I just don't know how to achieve getting and lower levels to come out of the
> rig.  I see in the manual to use the ESSB you have the 6khz filter.  Would
> that help my situation?
>
> TNX,
> AC8JD
>
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/more-Bass-in-K3-with-PR-40-tp7557805.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K3 just goes off

[Dale Boresz]

Any chance that the adjustable current limit (if you have that) on your 
power supply is set a bit too low?

73, Dale WA8SRA

On 6/23/2012 10:16 PM, Lee Buller wrote:
> This has not happened to me before
>
> Running some FD here on CW for about an hour in an AC room
>
> PA 35C FP 31C
>
> The rig just went off.  Dead.  Power supply is ON.  Pressed the power
> buttoncomes back on.
>
> Anyone see this beforeI have not.
>
> Lee
>
>
>   In our day and age it seems that Common Sense is in short supply.  If you 
> don't
> have any Common Sense - get some Common Sense and use it.  If you can't find 
> any
> Common Sense, ask for help from somebody who has some Common Sense.  Is Common
> Sense divine?
>
> Common Sense is the image of the Creator expressing revealed truth in my mind.
> -  John W. (Kansas)
>
> Never interfere with anything that isn't bothering you.
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[Elecraft] cw weight reduces as speed increases

[Dale Boresz]

I good friend has kindly lent me his K3. I have noticed that the cw 
weight changes inversely proportional to the speed setting -- just as it 
does on my old K2. The timing sounds decent below about 35 wpm, but once 
the speed gets to around 40 wpm, the weight becomes very light, and the 
keying sounds like it's being generated by a poorly adjusted bug.

I connected up an oscilloscope to monitor the keying envelope while 
sending a string of dits, and it's easily seen that at slower speeds the 
dit length is greater than the space between dits. At around 35 wpm, 
this reverses and the dit length becomes progressively shorter than the 
space between dits.

I would expect that regardless of speed, the dit length should equal the 
length of time between dits. Or, at least the ratio should remain 
constant, and a function of the weight setting.

I also tried to key the radio using an external Logikey K-3 keyer which 
*does* maintain a constant and equal dit-to-space ratio throughout its 
range, but the K3 still shortens the dits as speed is increased.

Is there any way to fix this?

73, Dale
WA8SRA
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Re: [Elecraft] cw weight reduces as speed increases

[Dale Boresz]

Hello Wayne!

Thanks for the quick response. QRQ mode works beautifully, and the 
keying sounds great now!

(I should have read the manual more closely)

73, Dale
WA8SRA

On 9/23/2011 9:52 PM, Wayne Burdick wrote:
> Dale,
>
> Keying weight would, in an ideal world, not change with speed. But the 
> reality is that the low-noise synthesizers in both the K2 and K3 take 
> some time to switch between transmit and receive. We take this into 
> account, but that can only be done up to a point because of various 
> timing relationships in hardware and firmware.
>
> Please try "QRQ" mode, in which the synthesizer doesn't move. This 
> allows for far more accurate timing at all speeds.
>
> 73,
> Wayne
> N6KR
>
>
> On Sep 23, 2011, at 6:36 PM, Dale Boresz wrote:
>
>> I good friend has kindly lent me his K3. I have noticed that the cw
>> weight changes inversely proportional to the speed setting -- just as it
>> does on my old K2.
>
>
>

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[Elecraft] [K3] Heil HM-12 microphone

[Dale Boresz]

Hello,

I'm trying to get a Heil HM-12 microphone to work from the front panel. 
Even with the Mic gain set to 60, and MIC SEL set to FP.H, I have to 
shout in order to see any ALC bars.

According to the K3 Owner's Manual in the MAIN Menu section describing 
"MIC SEL" :
"... tap [3] to turn on an additional gain stage. Use this only with 
very low-output mics. An apostrophe will appear after the H, e.g. H'"  
Tapping [3] only produces "N/A" here.

I also find that significant EQ is needed to reduce low freq, and 
increase high freq. output.

Anybody using the HM-12 with success on the K3?

73, Dale
WA8SRA

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Re: [Elecraft] [K3] Heil HM-12 microphone

[Dale Boresz]

Thanks to all who responded to my question concerning the HM-12. The 
microphone is working well now, and I thought I'd summarize my results 
for anyone else who may wish to use this microphone.

Also, many thanks to Bob Heil for his helpful suggestions, specifically 
that since the microphone was designed to be equalized, boosts or cuts 
of 12 dB or more are expected, and should be employed as needed.

So here's how the dust settled:

-- The HM-12 is a dynamic mic, so no bias should be used.

-- Not sure where the additional mic gain stage is located in the 
system, but I'd guess it's ahead of the front panel level control. 
Although I can get enough drive with the Mic gain cranked up to about 50 
with the additional gain stage turned off, the signal to noise ratio is 
significantly better when the additional gain stage is engaged, and the 
Mic control is set to about 12.

-- The final EQ settings were:
50 Hz : 0dB
100 Hz: 0 dB
200 Hz: -3 dB
400 Hz: -3 dB
800 Hz: + 3 dB
1.6 KHz: + 6 dB
2.4 KHz: + 12 dB
3.20 KHz: + 12 dB

TX roofing filter used is the 2.8K 8-pole

Not suggesting that these are the best settings, but they sound good to 
me (for my voice) when monitoring the transmitted signal on a second SDR 
receiver that has a flat and neutral receive audio response.

73, Dale
WA8SRA


On 10/18/2011 6:52 PM, Iain wrote:
> Hi,
>
> I use the HM-12 with the matching cable for the K3.
>
> So far, for my voice, I use the Mic-Sel on FP.H ( No extra gain with the
> '7' button needed)
> Mic Gain set to about 30 (+-3)
> Compression about 15.
>
> I did have to reduce bass and increase top end a fair bit though on Tx
> Eq though, but that may just be my voice.
>
> That may well help the levels so I don't need the extra gain setting .
>
> Got a report of excellent audio today with those settings.
>
>
>
> *Iain Haywood*
> G4SGX
>
> On 10/18/2011 6:28 PM, Dale Boresz wrote:
>> Hello,
>>
>> I'm trying to get a Heil HM-12 microphone to work from the front panel.
>> Even with the Mic gain set to 60, and MIC SEL set to FP.H, I have to
>> shout in order to see any ALC bars.
>>
>> According to the K3 Owner's Manual in the MAIN Menu section describing
>> "MIC SEL" :
>> "... tap [3] to turn on an additional gain stage. Use this only with
>> very low-output mics. An apostrophe will appear after the H, e.g. H'"
>> Tapping [3] only produces "N/A" here.
>>
>> I also find that significant EQ is needed to reduce low freq, and
>> increase high freq. output.
>>
>> Anybody using the HM-12 with success on the K3?
>>
>> 73, Dale
>> WA8SRA
>>
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Re: [Elecraft] APF question

[Dale Boresz]

Hello Mike,

The APF, because of the high "Q" will naturally produce ringing with a 
strong signal. Just back down the RF Gain control until you can clearly 
hear the keying elements. However, I'd suggest that if the signal is 
that strong to begin with, you probably don't need to use the APF 
function. It is particularly effective though on very weak signals that 
are near the noise floor.

73, Dale
WA8SRA

On 11/11/2011 1:16 PM, Mike Weir wrote:
> When using the APF function on my K3 I am getting a real tinny sound to the 
> point were it is difficult to understand the code. I was wondering if 
> settings were ok.
> Here is what I do.
> 1. Zero beat the CW signal with the spot feature and tuning is set to fine.
> 2. The filter is set at either 400hz or 350hz
> 3. The APF setting is a .60 I also adjust this setting to see if the audio 
> improves but it does not seem to.
> 4. I do try to fine adjust the VFO (fine setting) for the signal to jump out. 
> All that happens is it gets more tinny.
> Any suggestions?
> Mike
> VE3WDM
>   
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Re: [Elecraft] K3 AGC Mush

[Dale Boresz]

For me, the RF gain setting has a dramatic effect on the character of 
received signals. I rarely set it higher than about the two o'clock 
position.

Any idea of the RF gain setting while experiencing this 'mush'?

73, Dale
WA8SRA

On 12/4/2011 3:20 PM, Jan Erik Holm wrote:
> This is exactly what I have noticed too. Not even 10 signals
> are needed either.
> /SM2EKM
> ---
> On 2011-12-04 20:53, Merv Schweigert wrote:
>>> Also, in the heat of the contest or DX pile up most reporters do not
>>> recall how they had their AGC parameters set (threshold, slope, AGC
>>> decay soft/hard, fast or slow, and fast/slow settings etc. If you can
>>> let us know your complete set up for AGC parameters, if you are using
>>> headphones or speakers,  the signal strengths, CW or SSB, RX b/w, what
>>> different settings you tried etc., that will be extremely helpful.
>>>
>> AGC DCY  =  NOR
>> AGG HLD  =  20
>> AGC PLS  =  NOR
>> AGC SLP  = 000
>> AGC THR =  008
>> AGC F  = 200
>> AGC S = 020
>>
>> Headphones and speaker, no difference
>> signals S3-S4 range
>> CW
>> all bandwidths,  use mostly 400hz and narrower.
>> Tried AGC DCY = SOFT  (have PF1 programmed to switch that in and out fast)
>> ALL settings of SLP and THR
>> Turning off the AGC  improves the "mush".
>> Loud signals are no problem at all,  the K3 handles loud signals better than
>> any radio..  its when multiple signals of about S-4 are on this occurs,
>> more
>> than two or three, a pile up of same strength signals.
>> I can understand it may difficult to reproduce unless you have a way to
>> have
>> 10 signals of the same strength, close to the same freq, and keying,  just a
>> carrier will not reproduce the effect,  has to be keyed signals you are
>> trying
>> to copy.  They turn into a single level buzz of sorts.
>>
>> One note - If signals are below S9+20 and turning AGC off does not help,
>>> its probably not a DSP AGC or H/W AGC issue.
>>>
>>> Also, make sure to use the AGC Limiter menu setting to hard limit audio
>>> levels if you use AGC OFF.
>>>
>> Never use NR or NB  and have the AGC limiter set for no AGC times.
>>
>> In my rough gestimation it seems that signals in the S3-S4 range need to
>> not trigger
>> the AGC as they do,  if one could set the THR to higher level? perhaps
>> it would stop the
>> problem.
>> Is it possible to increase the range of SLP and THR to move the point
>> where S-3 or S-4
>> signals trigger the AGC?
>> Thanks much Eric.73 Merv K9FD/KH6
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Re: [Elecraft] KX3 volume

[Dale Boresz]

Hello Michael,

If you are listening on any band higher than 40m on the KX3, you should
probably have the preamp engaged. If I recall correctly, there are
recommendations in the User Manual regarding the preamp.

73,

Dale - WA8SRA


On Wed, Jul 31, 2019 at 4:38 PM Michael St.James via Elecraft <
elecraft@mailman.qth.net> wrote:

> Help! My KX3 has little to no speaker volume. My RF=-0 and my AF=58 yet to
> hear any signal coming in through my R7 vertical I have to use the preamp.
> I’ve checked the antenna with my other radios. It’s working great. I
> haven’t used the KX3 in many months and I suspect I have set something
> wrong in menu. Can anyone suggest a correction?
>
> Sent from my iPad
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