[Elecraft] S-meter reading at 100kHz

[Roger D Johnson]

For those of you that have the KBPF3 100-400 kHz modification:

What is your no-signal S meter reading at 100 kHz?

Do you have the 220 Ufd polymer capacitor installed?

Thanks, Roger
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[Elecraft] For Sale: K3/100 s/n 2578

[Roger D Johnson]

I discovered that I had not upgraded to the KIOB3B card which provides
a sound card and USB connection.

I'm dropping the price to $2300 accordingly.


Has virtually all options except VHF converters and KBPF3 on aux receiver.
6, 2.7 and 0.5 kHz filters in main RX; 2.7 and 0.5 hHz filters in aux RX.

Went back to Mothership in Jul 2016 for TLC and upgrades.

Please contact me directly with any questions: n...@roadrunner.com

Asking $2500 plus shipping

73, Roger

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[Elecraft] KIOB3B for K3

[Roger D Johnson]

Apparently this card is no longer available. Does anyone know what the
price was?

73, Roger
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[Elecraft] For Sale: K3/100 s/n 2578

[Roger D Johnson]

Has virtually all options except VHF converters and KBPF3 on aux receiver.
6, 2.7 and 0.5 kHz filters in main RX; 2.7 and 0.5 hHz filters in aux RX.

Went back to Mothership in Jul 2016 for TLC and upgrades.

Please contact me directly with any questions: n...@roadrunner.com

Asking $2500 plus shipping

73, Roger

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Re: [Elecraft] K3 Audio Peaking Filter

[Roger D Johnson]

Unfortunately, the APF is too narrow for 160m with all the lightning noise.
As I recall, we've been promised wider selectivity choice(s) but nothing ever
happened.

73, Roger


On 6/22/2020 12:27 PM, John Gibson wrote:

Each Sunday evening, I use my K3 #820 to try to check into Kevin’s 20m Elecraft 
CW net. Kevin in Oregon is almost 1900 miles from me in Michigan, and I succeed 
only because I have a modest tri-band beam antenna at 60 ft.

Current propagation conditions make this especially challenging. Sometimes 
Kevin is so buried in noise that I find him only because I can recognize the 
rhythm of his sending.

Last evening, conditions were poor. I tuned all around the net frequency and 
could hear nothing of Kevin. Then I turned on my K3's Audio Peaking Filter 
(APF), searched again, and found him, and he was loud! When I turned off the 
APF, he vanished. I did check into the net.

My K3's APF made all the difference between hearing Kevin and not finding him. 
I am impressed that it worked so well. I thank Wayne N6KR for creating this 
feature for the K3.

73,

John, no8v
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Re: [Elecraft] OT: The Colpitts mystery

[Roger D Johnson]

I was stationed with the Coast Guard in Kodiak, Alaska between Summer
1976 and Summer 1978. I flew up to Anchorage to take my Extra exam before
an examiner. Probably sometime in 1977.

73, Roger


On 4/29/2020 10:47 AM, Ted Roycraft wrote:

I took the test for Extra administered by an FCC examiner, David Popkin, in NYC
in 1964.  So there were still FCC examiners then. Funny that I still remember
David Popkin's name but I can't remember what I had for dinner last night.

73, Ted, W2ZK

On 4/29/2020 12:27 AM, Jim Brown wrote:

On 4/28/2020 4:16 PM, EricJ wrote:

but some time in the mid-50s it was given over to volunteer hams.


My memory is that it was a LOT later than that. I'd guess late '70s to early
'80s.

73, Jim K9YC

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Re: [Elecraft] K3S poor CW reported with N1MM+

[Roger D Johnson]

I rather liked the old Russian tank radios. Whoop de whoop de 
whoop whoop de whoop.

73, Roger


On 4/24/2020 9:40 AM, Carl Yaffey wrote:

IMHO nothing beat the sound of CW from a Collins 32V3. Yeah, I’m old!
73 K8NU

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[Elecraft] Amp Failure, Efficiency

[Roger D Johnson]

With a switchmode power supply, it would seem to be simple
to provide one or more lower voltage outputs to keep efficiency
up at lower powers (maintain same load Z).

73, Roger

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[Elecraft] KPA1500 for sale

[Roger D Johnson]

Unfortunately, illness forces me to sell my KPA1500 s/n 373.
It has Temperature Sensor and Minimum Load mods installed.
Works perfectly. There are so few of these for sale I don't
know what a fair asking price would be. I'm thinking $5000.

I'll probably also sell my K3. perhaps someone would like a
package deal.

73, Roger
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[Elecraft] K-POD is sold

[Roger D Johnson]

Thanks and Merry Christmas to all who replied.

73, Roger
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[Elecraft] K-POD for sale

[Roger D Johnson]

Like new. I thought I would use it more but, with my operating style, it
just sits there.

$200 Plus shipping.

73, Roger N1RJ

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Re: [Elecraft] K3 Drive Levels and the SPE 1.3K-FA

[Roger D Johnson]

I purchased one of these amps about two years ago. I expected it to require
50 to 60 watts of drive for full output but it only took half that. I was
worried about screwing up and hitting it with 100 watts from the K3 and
blowing the final transistor. I knew there was a pad on the input and I
figured it would be fairly simple to increase the attenuation 2 db or so.
I pulled the covers off the amp and discovered that there were 2 pads on
the input! The first was TO-220 style resistors mounted to a chassis rail
and the second was conventional wire-wound resistors mounted on the PA
circuit board. Replacing the TO-220 resistors looked like it would involve
quite a bit of disassembly and probably would void the warranty. Tack soldering
some resistors on the second pad to increase the attenuation would be much
easier and could be easily removed if it had to go back for service. Problem
solved, right? Nope. I discovered that the amp senses drive power after the
first pad. This meant the amp kept tripping off with overdrive warnings! I
contacted the factory to see if there was an adjustment I could make and was
told it would have to come back for "realignment"!

I now have a KPA1500!

73, Roger


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Re: [Elecraft] KX3's binaural pitch-mapping feature

[Roger D Johnson]

I've tried several times to get this to work on my K3 without result. My
K3 has no AFX Mode selection.

73, Roger


On 10/21/2019 8:05 PM, Wayne Burdick wrote:

The KX3, like the K3/K3S and KX2, has full stereo audio. But it has one special 
audio effects mode the others don't: binaural-audio pitch mapping.

When pitch-mapping is in effect, stations lower in frequency are mapped lower 
in audio pitch, and higher-frequency signals are mapped higher in pitch. A 
station tuned to your nominal sidetone pitch would be in the middle.

This creates an audio "stage," of sorts, where it's easy to pick out different 
"instruments." The overall effect is to reduce listening fatigue in contests or anytime a 
band is crowded.

Headphones or dual external speakers are of course required to use PITCH and 
other binaural audio modes.

To turn on pitch mapping, set MENU:AFX MD to PITCH.

73,
Wayne
N6KR

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[Elecraft] K2USA

[Roger D Johnson]

I was never at Ft Monmouth...took my training at Ft Gordon. We had
a small hamshack there not nearly as elaborate as k2USA. I almost
blew up the building one night. My first experience firing a furnace
using soft coal.

73, Roger
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Re: [Elecraft] KPA1500 Solution to the efficiency problem?

[Roger D Johnson]

I think I've discovered a fly in my ointment! The efficiency
that the amp displays is based on it's determination of the
output power. If the amp is looking into a higher Z load,
the indicated power is greater than normal resulting in a
higher efficiency reading.

Oh well, back to the drawing board!

73, Roger


On 8/31/2019 9:32 AM, Roger D Johnson wrote:

It occurred to me that the KPA1500's built in tuner might be of
some help.

Here's my reasoning. If we decrease the drive power to lessen
the output power but keep the same voltage, the amplifier wants
to see a higher load impedance.

Here are the results of some quick tests:

Base line is the amp set for 1000 watts output and eff is 44%

I the set the tuner so the amp "sees" a load of 60 Ohms (actually)
58 Ohms with the values of L and C available. Eff went up to 53%!

I then set the tuner to present a 70 Ohm load (actually 68 Ohms).
Eff went up to 59%!

This was into a dummy load. I realize that, if you're using the tuner
to match an antenna, this could be very complicated.

If Elecraft could figure some way to give us a choice of voltages
for differing power levels, this problem would go away.

73, Roger



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[Elecraft] KPA1500 Solution to the efficiency problem?

[Roger D Johnson]

It occurred to me that the KPA1500's built in tuner might be of
some help.

Here's my reasoning. If we decrease the drive power to lessen
the output power but keep the same voltage, the amplifier wants
to see a higher load impedance.

Here are the results of some quick tests:

Base line is the amp set for 1000 watts output and eff is 44%

I the set the tuner so the amp "sees" a load of 60 Ohms (actually)
58 Ohms with the values of L and C available. Eff went up to 53%!

I then set the tuner to present a 70 Ohm load (actually 68 Ohms).
Eff went up to 59%!

This was into a dummy load. I realize that, if you're using the tuner
to match an antenna, this could be very complicated.

If Elecraft could figure some way to give us a choice of voltages
for differing power levels, this problem would go away.

73, Roger



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Re: [Elecraft] KPA-1500 on digital modes

[Roger D Johnson]

I just did a quick check:

At 1500 watts eff is 56% and pwr diss is 1179 watts
   1000  44  1273
500  30  1120

My Expert 1.3K-FA had 3 voltage levels:

48 volts for full power (1300 watts)
38   800 watts
32   450

I no longer have the amp so I can't check the eff at those
voltages and power levels.

73, Roger


On 8/29/2019 9:03 AM, Roger D Johnson wrote:

It's interesting that the heat that has to be dissipated is pretty close
to 1000 watts in all these scenarios! Running the amp at less than full
power buys you nothing.

73, Roger

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Re: [Elecraft] KPA-1500 on digital modes

[Roger D Johnson]

It's interesting that the heat that has to be dissipated is pretty close
to 1000 watts in all these scenarios! Running the amp at less than full
power buys you nothing.

73, Roger


On 8/29/2019 8:38 AM, Larry (K8UT) wrote:

Pete,

I don't run my amp at full legal limit on digital modes, but typically set the 
input power for about 1000 watts output. One of the interesting characteristics 
of the amp is increased efficiency as power increases. At 600 watts efficiency 
is only 38%, whereas at 1000 efficiency increases to 50% and at 1500 watts to 60%.


(see screenshots)

  -larry (K8UT)

-- Original Message --
From: "N4ZR" 
To: "Elecraft List" 
Sent: 2019-08-29 07:59:23
Subject: [Elecraft] KPA-1500 on digital modes

Elecraft's published specs rate the KPA-1500 for 1500 watts output on all 
modes.  In prepping for this weekend's contest, I've been running it at closer 
to 700 watts, because I've found that even just running on CW, with its much 
lower duty cycle, my amp reaches 70C quickly.  I don't do that much digital 
contesting, though, so I'm wondering whether 1500 watts output is on digital 
modes is realistic or a recipe for trouble.


--
73, Pete N4ZR
Check out the Reverse Beacon Network
at , now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

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Re: [Elecraft] KPA-1500 Power Output Variation

[Roger D Johnson]

I just did some experiments with my K3/KPA1500 combo into a dummy load.
I used my LP-700 for power measurements. Drive from K3 was set to 30W
(28 on K3 indication).

I started at 35C with PO at 1362 watts. At 70C, the PO dropped to 1277
watts...about a 6% decrease. K3 output remained steady at 30W.

What we need is someone with a separate tuner that can set up loads
greater and lesser than 50 Ohms and with Xc and Xl components. We may
find greater output with loads less than 50 Ohms and/or loads with Xl
rather than Xc. This is one of the disadvantages of having a fixed output
network. With the old AL-1200, I could just tune for max smoke and set
the drive accordingly!

73, Roger




On 8/24/2019 2:45 PM, Jim McCook wrote:
I'm using my K-3 with the KPA-1500 and have a problem with extreme changes in 
power output with a given drive level on 40m CW.  This happens to a lesser 
extent on other bands with different antennas.  My 40m antenna is tuned to 7.025 
where SWR is 1.1:1.  On 7.000 it is 1.4:1 and at 7.050 it's 1.3:1. Within that 
range of frequencies the output _without_ the tuner at a given drive level (30w) 
varies from 1300w to well over 1700w.  Using careful _tuner_ settings it's only 
slightly better.  I have to reduce drive to 24 or 25w to get below 1500w, 
depending on the temperature of the amplifier (power output varies a lot with 
temperature changes).  Higher temp = lower output.


I have tried to compensate in the segments where output is excessive by using 
manual settings via the Utility.  This has helped slightly, but still isn't 
adequate.  I've resisted using ALC because of concern for generating 
distortion.  Having to ride the drive level from the K-3 is a PIA, especially 
during contests.


It seems to me a good answer would be to have higher input attenuation so drive 
requirement would be higher, maybe around 70+ watts.  I'd expect changing drive 
level by the same number of watts (5 or 6) would not affect output as much.  I'd 
also assume the power output would not vary nearly so much with a given drive 
level.


Is this a possible solution?  I've also understood that most transmitters (even 
the K-3) have cleaner output near highest rated output.


Help!

Jim W6YA


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[Elecraft] K3 and NaP3 v5.6.0

[Roger D Johnson]

This setup works fine except for 6m where the image rejection goes away.
Larry, N8LP says the NaP3 program senses when the radio goes above 48 mHz
and changes the I/Q setting to compensate. I've tried several versions of
NaP3 and none of them do this on my setup. Am I missing something in the
setup menu?

I've found that changing the sign of the number in the GAIN box solves the
problem but it's a bit of a pain to do this every time I want to check 6m.

73, Roger
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Re: [Elecraft] Measuring SWR (Long)

[Roger D Johnson]

For an interesting discussion..."What happens to the power that's reflected?"


On 4/9/2019 3:42 PM, Al Lorona wrote:

There's always a lot of discussion about measuring SWR, low SWR values, SWR 
lights not lighting up, etc. Here's something that might give you a better 
'feel' for SWR.

Imagine that you measure your forward power at 100 W and your reflected power 
at only 1 W. You'd probably be very happy about this. Congratulations, your SWR 
would be 1.22 to 1.

Pause for a moment and let it soak in that an SWR of 1.22 is fabulously good. 
Once you get to this point, below which we're dealing with reflected power 
that's less than 1% of your power, or four-hundredths of a dB, it's not worth 
doing any more to your antenna system to improve it. No trimming, cutting, 
raising, lowering, hanging stuff from it, adding remote tuned things, nothing. 
You're done for the day and can now get on the air!

If the reflected power were 4 W, which would still look pretty small on the 
meter, the SWR would be 1.5 to 1.

A lot of people might be bothered by an SWR of 1.5, but really this is still 
very good and it's probably not worth going back up to the antenna to mess with 
it any more. Most importantly, the station on the other end cannot possibly 
hear the difference between your 1.2 and 1.5.

At this point you may be saying, "Yeah, but my rig/amplifier/other thing isn't happy 
unless the SWR is below 1.5 to 1, so I would still have to do more work."

Okay, that's fine, but my point is that the absolute number 1.5 nonetheless 
represents a system that is working quite well.

Let's allow the reflected power to increase all the way to  10 watts! At 
that point, your SWR would be about 2 to 1. Sounds pretty bad, but surely if you were 
stranded in the desert and had to use your KX3 and a wire to get help, you'd be happy 
to have a match this good.


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[Elecraft] New KPA1500 manual

[Roger D Johnson]

When I was in the military, and a pub was changed, they just sent
new pages that had the changes. That way they didn't have to re-
publish the whole thing.

Could Elecraft tell us which pages had been changed so we can print
them out without doing the whole manual?

73, Roger

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Re: [Elecraft] Purpose of this group

[Roger D Johnson]

I have no interest in most of the technical discussions.

Roger N1RJ

On 3/24/2019 8:40 AM, Bill wrote:



Am I correct that this is a technical group? Or, is posting space to be taken up 
by non-technical discussions of which many users have no interest?


Bill W2BLC owner/user

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Re: [Elecraft] OT: RTTY Nostalgia

[Roger D Johnson]

I remember that from my Army days in the AN/GRC-26. No cat though!

73, Roger


On 3/22/2019 12:26 PM, Ken G Kopp wrote:

I had a Teletype Model 26 attached to a BC-610E.  Cat slept on top for
warmth.

73 !

K0PP


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Re: [Elecraft] Query for new DSP features

[Roger D Johnson]

What ever happened to giving us some alternate selectivity on the APF?

73, Roger


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Re: [Elecraft] WHY NOT 700HZ FILTER FOR K3/K3S?

[Roger D Johnson]

I can vary the selectivity from 2800 to 50 Hz with the width knob.

73, Roger


On 12/23/2018 10:08 AM, Bob McGraw K4TAX wrote:

I find the 500 Hz 5 pole filter  works very satisfactory for this purpose.

73

Bob, K4TAX

On 12/23/2018 6:54 AM, Victor Rosenthal 4X6GP wrote:

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Re: [Elecraft] KPA-1500 issues

[Roger D Johnson]

Interesting! I just ran some tests on my station into Bird load; tuner bypassed:

At 50.1 mHz:

LP-700 1.06
K3 1.5
KPA1500 1.0

At 9.56 mHz (geometric mean freq)

LP-700  1.05
K3 1.1
KPA1500 1.0

At 1.825 mHz:

LP-700 1.05
K3 1.1
KPA1500 1.0

My KPA1500 looks good but K3 is off on 6m.

73, Roger


On 11/27/2018 5:22 PM, Wes Stewart wrote:
A few months ago I wrote about the potential errors in measuring SWR with 
amateur grade equipment. See my comments in this thread:


http://elecraft.365791.n2.nabble.com/K3-SWR-Numerical-Indication-td7643839.html

I imagine "the best they can do" is accurate.

Wes  N7WS

ps. I also said that if I was wrong, I was sure I would hear about it.  
Crickets.

On 11/27/2018 12:39 PM, Paul Baldock wrote:

[snip]

I also note that when into a perfect 50 Ohms, and the tuner bypassed, on 6 
meters, my KPA1500 says the SWR is 1.4:1. On 10 meters it reads 1.2:1. Rene 
from Elecraft says "this is the best they can do".


Other than the issues above I am very happy with the KPA1500.

- Paul


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Re: [Elecraft] KPA1500 Status Displayed on K3

[Roger D Johnson]

The display of the K3 is "hard coded". When it was designed, there was no
KPA1500 hence it can only read KPA500.

73, Roger


On 10/26/2018 8:13 AM, Ed G wrote:

I can’t think of a lower priority issue to have….so here is my question.  I 
have the KPA1500 and K3 cabled together. Why do status changes on the amp (for 
example when I switch the amp to standby) show on the K3 screen as “KPA500” and 
not “KPA1500?”  It looks like there is room on the K3 display for the missing 
digit, but maybe there is a display limitation? Amp firmware rev is 1.64.
--Ed—


Sent from Mail for Windows 10




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[Elecraft] KPA -1500 fixed!

[Roger D Johnson]

I had to revert to WinXP in order to change the port assignment for the FTDI
adapter. After I finally established comms, the firmware loaded and all seems
fine now.

Just wondering why I had the "low gain ratio" error with v1.78?

73 all, Roger
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[Elecraft] KPA1500

[Roger D Johnson]

I think I've bricked my KPA1500! Yesterday I installed v1.78 of the firmware.
Today I was calling a dx station on 20m and I kept getting a "low gain ratio"
error message. I thought it might be the new firmware so decided to go back
to v1.64. I downloaded the hex file from Elecraft and somewhere along the line
things went astray. I had an firmware loading indication on the display but it
was static. I looked through the manual for some sort of reset proceedure but
found nothing. I thought that killing the power and a restart might cure it.
Now, the amp comes on with fans at full blast and front panel buttons do 
nothing!

Help!

73, Roger


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Re: [Elecraft] OT: WWV/WWVH Closure

[Roger D Johnson]

Ah! LORAN C. I remember it well.

Roger CWO4, USCG (retired)


On 8/20/2018 12:54 PM, Rose wrote:

Trivia ..

The last I knew the WWVB transmitter is a "repurposed" 100KW
LORAN C TX from the closed site in ND.

73!

K0PP

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[Elecraft] KPA1500

[Roger D Johnson]

The amp arrived in fine shape and am getting familiar with all the
features. I have some questions:

Is there an input attenuator normally in-line?

I can't figure out how to manually change the L and C values for the tuner.

If these are changed, are the settings memorized?

73, Roger N1RJ
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Re: [Elecraft] Survey and summary: Elecraft K3/K3S panadapter solutions

[Roger D Johnson]

It's also fine with a reliable sound card!

73, Roger


On 7/26/2018 6:33 PM, Joe Subich, W4TV wrote:


The issue is that NaP3 does not support Airspy, SDRplay or RTS dongle
based SDRs.  It's fine if one has LP-Pan with an unreliable sound card
or Fun Cube Dongle but otherwise it's rather crippled and not readily
supported.

73,

   ... Joe, W4TV


On 2018-07-26 5:28 PM, ab2tc wrote:

Hi,

None of you buddies have heard of LP-PAN and NaP3? No RF splitter needed and
NaP3 takes care of all the frequency offsets caused by the bandpass shifting
on the K3(S). The latest versions of NaP3 even have cluster spots displayed.

AB2TC Knut


William Liporace - WC2L wrote

Great information!! The Airspy & N1MM+ Spectrum display is pretty cool.
It is radio independent (K3, FTdx500, etc). The cost is $200.  It is
dead easy! My guess the Flex guys used the software included.

So about 12% of the teams used the Airspy HF+. My guess is that you had
most of them were using N1MM+. I would also like to know who was using
what (radios, software, etc). I have not looked at the web site. If I
remember someone did a list for WRTC 2014.

I like the Win4K3 suite. For me the missing part is the ability to
include the Airspy HF+. I don't use my P3... It will more than likely go
back into the box.

Will WC2L





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Re: [Elecraft] Which Amp ?

[Roger D Johnson]

I have the report. 3rd order IMD ranges from approx 31 to 35db at 1000 watts
output. Not terrible but not spectacular either. I really wish they had tested
it at rated power (1300 watts). I might be very different at that point!

73, Roger


On 7/24/2018 4:03 PM, Joe Subich, W4TV wrote:


On the other hand, the SPE is no cleaner in Germany or Russia than it is
in the US.  SPE is one of the dirtiest amateur amplifiers ever submitted
for FCC approval and the IMD tests were only performed at about 50% of
maximum output power.

73,

   ... Joe, W4TV


On 2018-07-24 12:51 PM, Oliver Dröse wrote:

Bob is in Germany and Igor in Russia. They do not have the stupid FCC limits. 
;-)

73, Olli - DH8BQA




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Re: [Elecraft] Which Amp ?

[Roger D Johnson]

I'm using the SPE 1.3K-FA at present but have a KPA-1500 on order. I like the 
idea
of automatically reducing the power out of the K3 to a preset value when the 
KPA-1500

is turned on. I also like the idea of having a bit more "headroom". The 1.3K 
has a
1db compression point of about 1300 watts although it will put out 1500 if it's
pushed.

If anyone is interested in a lightly used 1.3K let me know. It doesn't have a 
built
in tuner but does have the newer more powerful transistor final. A good boost in
power over a KPA-500 at half the cost of a KPA-1500.

73, Roger N1RJ


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Re: [Elecraft] KPA1500

[Roger D Johnson]

What are users seeing for maximum power output on each band?

73, Roger N1RJ


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[Elecraft] K3 spurs

[Roger D Johnson]

I was watching 6m yesterday and noticed several spurs. They were spaced 39kHz
apart. Amplitude dropped but didn't disappear when switched to dummy load.

I have the K3 with new synthesizer boards. Just wondering if anyone else seeing
something similar. IOW is it something in the K3 or external?

73, Roger

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Re: [Elecraft] OK, odd question

[Roger D Johnson]

IIRC there was no "standard". It was an arbitrary choice by the manufacturer
which side of the filter they put the BFO crystal frequency. Nice to have a
choice with the K3!

73, Roger


On 2/14/2018 11:15 AM, Chuck Chandler wrote:

Something that bugs me just a tiny wee bit.

  


So, for years I used a Kenwood or two, then a Yaesu or three, then a
Ten-Tec.  Much of the time on CW.  When I tuned a band, say 20M, I would
start at the bottom of the band and tune upwards in frequency.  When I did
this, as I approached a CW signal it would be higher-pitched.  As I tuned it
to zero-beat with my 500-Hz CW offset the pitch would drop until it matched
my 500 Hz spot.  If I tuned too far, the pitch would drop below 500, then
drop off the scale as I tuned past it.  Similar in fashion to tuning a USB
signal.

  


My Elecraft tunes similar to one other rig I have owned, an iCom 706 MkIIG.
As I tune up the band I first hear a low-pitched CW signal, then it centers,
then it gets higher in pitch.  Similar to tuning an LSB signal.

  


This doesn't make a difference in usability, I guess it's due to the
receiver architecture.  And, yeah, I can go to "CW-R" and it works the way
all those other radios did.

  


My question is, is there a reason for it working this way?  Does it provide
some advantage?  Or is it just the way it happened. like, not enough room
towards the edge of the napkin when it was drawn up?

  


Curious.

  


73 de Chuck, WS1L

  


Chuck Chandler

chandler...@gmail.com

  


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[Elecraft] Old Software version

[Roger D Johnson]

How do I load an older version back into the K3?

73, Roger
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[Elecraft] Selectivity

[Roger D Johnson]

I noticed that during the contest, that if I selected 50 or 100 Hz selectivity, 
the audio would drop way down. It didn't used to be this way. I tried reloading

an earlier version of the software but couldn't figure out how to do it.

Hope this comes through, finally!


73, Roger
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[Elecraft] K3 selectivity positions

[Roger D Johnson]

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[Elecraft] Selectivity

[Roger D Johnson]

I noticed that during the contest, that if I selected 50 or 100 Hz selectivity, 
the audio would drop way down. It didn't used to be this way. I tried reloading

an earlier version of the software but couldn't figure out how to do it.

Hope this comes through, finally!


73, Roger
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[Elecraft] Selectivity

[Roger D Johnson]

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[Elecraft] Selectivity

[Roger D Johnson]

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[Elecraft] K3 selectivity positions

[Roger D Johnson]

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Re: [Elecraft] K3 / RF gain - S meter issue

[Roger D Johnson]

Is the S meter supposed to read 60 over 9 when the RF gain is turned all the way 
down?


Mine reads 30db!

73, Roger



On 12/13/2017 9:10 PM, Wes Stewart wrote:
I would first perform the RF Gain calibration using the K3 Utility. The 
calibration program measures gain characteristics and applies software 
correction.


Then run the S-meter calibration.

Wes  N7WS

On 12/13/2017 2:25 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] K3 in data A mode

[Roger D Johnson]

I tried it in LSB mode and it works fine! I checked and both the CW and SSB 
fikters are selected for data mode.



On 10/10/2017 5:36 PM, Don Wilhelm wrote:

Roger,

I assume you are using AFSK A data sub-mode.  Check the data submode to be 
certain.


Do you have anything other than the soundcard audio lines, the RS-232 computer 
connection, the DC power cable, the wattmeter and antenna (or better yet a 
dummy load) connected to the K3?

If so remove everything except those items.

It appears you have the audio set about right, although the 5th bar should be 
only flickering, not on solid.


Try again with the bare K3 and see what happens.  If you have the KAT3 
installed, do an ATU TUNE into the dummy load to set the L/C components to 
match the dummy load.


73,
Don W3FPR

On 10/10/2017 4:37 PM, Roger D Johnson wrote:

I'm trying to get my system set up for RTTY. I think I have the cabling
OK. Using MTTY I can decode signals fine but when I try to transmit,
I get no power out. The MTTY program keys the VOX and I have 5
bars of ALC but nil on the wattmeter!

Help!

73, Roger N1RJ


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[Elecraft] K3 in data A mode

[Roger D Johnson]

I'm trying to get my system set up for RTTY. I think I have the cabling
OK. Using MTTY I can decode signals fine but when I try to transmit,
I get no power out. The MTTY program keys the VOX and I have 5
bars of ALC but nil on the wattmeter!

Help!

73, Roger N1RJ


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Re: [Elecraft] 630M

[Roger D Johnson]

How ham radio has fallen. Incentive licensing, no code, and now, my computer
talks to your computer!

73, Roger


On 9/21/2017 10:58 AM, Wayne Burdick wrote:

Congratulations, Ken! How much power?

Wayne
N6KR



On Sep 21, 2017, at 4:40 AM, Ken Roberson via 
Elecraft  wrote:

2-Way 630 meter WSPR decodes from VK4YB and WG2XXM 13441km.Rig K3 with HB pwr 
amp and 60 ft vertical.
73 Ken K5DNL/WG2XXM
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[Elecraft] K3 strange behavior

[Roger D Johnson]

Whilst searching for some RFI, I noticed my K3 has a sudden drop in gain
when tuning up past 3300 kHz. I have the KBPF3 installed but don't know
what frequencies the K3 switches from the normal filters to the KBPF3
filters.

73, Roger

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[Elecraft] K3 auto power reduction

[Roger D Johnson]

The KPA-500 (and probably the KPA-1500) will automatically reduce the
power from the K3 to a predetermined level for proper drive and back to
the level from the power control when the amp is off.

Is there a way to invoke this magic with other amplifiers?

73, Roger N1RJ


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Re: [Elecraft] K3S with an external receiver

[Roger D Johnson]

The antenna is easy. Muting the external rx is the problem!

73, Roger


On 8/24/2017 12:00 AM, JEAN-FRANCOIS wrote:

Hi,

Is there anybody ever use an external receiver with a K3S as a second receiver… 
to act as a second receiver that can share the same antenna the K3S use or 
similar setup???

The reason here is I still a have my Kenwood 590SG that I could enable TX 
Inhibit for safety, and use it as a second receiver only. It’s an excellent 
backup radio. I wondering if I could enhance my setup if possible by using 
spare gears.

Best 73 de Jeff | VA2SS

__
Jeff | VA2SS
Jean-François Ménard

jean-francois.men...@va2ss.com
www.VA2SS.com

Message envoyé à partir de mon appareil mobile.
Message sent from my portable device.

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Re: [Elecraft] Make this email list more manageable - a forum instead?

[Roger D Johnson]

Let's see

Assuming the computer is running here's what I have to do:

1. Bring up Thunderbird mail program

2. Select Elecraft folder

3. Scroll down and click on the email I want to read.

For Antique Radio Forum, which I like very much, I do this:

1. Bring up ARF

2. Click on topic I want

3. Scroll through and click on email I want to read.

Looks pretty much the same to me except ARF has things neatly categorized and
topics that interest me are easy to find.

73, Roger N1RJ


On 8/19/2017 2:22 PM, Lynn W. Taylor, WB6UUT wrote:

Oh, please don't.

A "push" technology, like E-Mail means that more of us will participate.

Web Based forums are a "pull" -- one has to be dedicated enough to go to the 
forum.  It slows the tempo and reduces participation.


It isn't a magic bullet.  People still post in forum sections off topic.

Before I retired, I ran an ISP and did E-Mail professionally, including mail 
filtering.  The greatest tool I found is called PopFile.


PopFile can, with a minimal amount of work, split out mail by product 
mentioned.  You don't have to figure out what keywords to use, you just have 
to move mail that is mis-classified to the right place.  Takes a couple of 
days worth of mail to train to 90% accuracy or so, and not long after before 
it's near 99%.


73 -- Lynn




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Re: [Elecraft] Make this email list more manageable - a forum instead?

[Roger D Johnson]

I really like the format on Antique Radios:

http://antiqueradios.com/forums/

73, Roger



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[Elecraft] B Folded Dipole over an Armory

[Roger D Johnson]

Cebik, W4RNL, modeled two versions of the T2FT. One 165ft long and the other 
100ft.
Here is what he said about these antennas:

Terminator Resistor Losses
Although transmitting uses have been made of the T2FD, its chief use appears to 
be as a short wave reception antenna. In this application, the excess available 
receiver gain can largely make up for losses incurred in the terminating resistor.


The losses in the terminating resistor are considerable, ranging from nearly 
half power to amounts in excess of 90% of the available RF power. The pattern of 
losses is not a simple smooth curve, but varies throughout the operating range 
of the antenna. The following graph plots the losses in terms of dB. For 
reference, a 3 dB power loss represents half the power being dissipated in the 
resistor. Higher values indicate more of the power being dissipated rather than 
being radiated (or transferred to the receiver).


73, Roger


On 8/13/2017 3:36 PM, Fred Jensen wrote:

Ummm ... let's be truthful here.  The B folded dipole can be found in radio catalogs from 
the 50's.  We all knew [I was a kid with a new license then and even I knew] that the doohicky at 
the center of the top wire was a 400 or so ohm non-inductive resistor, and half the power [3 dB] 
heated it up.  There was no subterfuge and B wasn't "conning" anyone, it was very 
clear in the specification sheet.  300 ohms at the feed point, hams often fed them with 300 ohm 
TV twinlead of the day to a balanced link coupled to the final tank circuit.  A 4:1 transformer 
netted 75 ohms which nicely matched that twinlead too.







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Re: [Elecraft] B Folded Dipole over an Armory

[Roger D Johnson]

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[Elecraft] OT - DX Cluster Programs

[Roger D Johnson]

I've just gotten interested in 6 meters but only CW and SSB. Is there any 
cluster
software that lets you filter out the digital spots on 50,276?

Thanks, Roger

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Re: [Elecraft] Ground Rods and Congrete - Enough Said!

[Roger D Johnson]

Unfortunately, lightning protection is one of the most discussed and least
understood topics in amateur radio. A properly engineered and constructed
Ufer ground works well but many seem to think that any amount of conductor
buried in any amount of concrete in any configuration is a Ufer ground! These
same people probably think that, if 120 radials make a good ground for a
vertical antenna, then a single wire 120 times as long will work the same.

73, Roger

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Re: [Elecraft] A little theory

[Roger D Johnson]

There is a man I wish I had met. Look up his safecracking escapades
at Los Alamos!

73, Roger


On 4/16/2017 2:40 PM, kev...@coho.net wrote:
If you are not familiar with Richard Feynman he was a physicist who worked on 
the Manhattan Project.  He was also a professor at Caltech.  Here are some of 
his lectures on physics which he offered to undergrads.  Introductory college 
level physics taught by a master.


http://www.feynmanlectures.caltech.edu/

73 & GL,

 Kevin.  KD5ONS

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Re: [Elecraft] QRZ.com

[Roger D Johnson]

I just tried and got this message:


We are expriencing issues with our Cloud Storage provider, Please be patient 
while they work to resolve the problem. In the meantime some parts of QRZ may 
not be available or may be slow to respond.



On 2/28/2017 3:00 PM, Ken G Kopp wrote:

Has anyone noted anything "odd" about logging onto QRZ.com today?

It's -very- slow and when I do get on it want's me to load JavaScript.
Have never had to do this.

Please try and see if the site is operating normally, or have they been
hijacked?

BTW, all other sites involving logging it work OK ...

Thanks, and ...

73

Ken Kopp - K0PP
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Re: [Elecraft] Soldering lesson

[Roger D Johnson]

Even the caption is incorrect! You don't "hone in" on anything.

73, Roger


On 2/17/2017 6:28 PM, Douglas Hudson wrote:

This is an example of how easy it is to build a kit.

http://www.eejournal.com/archives/fresh-bytes/everything-about-this-beautiful-woman-soldering-stock-photo-is-w/
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Re: [Elecraft] Is it just me?

[Roger D Johnson]

I immediately delete such messages! It may be genuine but it sure looks like a
troll looking to see if it's a "live" email address.

73, Roger


On 1/25/2017 2:38 PM, Jim Rhodes wrote:

When I get an email like this when I reply to a message on a forum like
this I get the impression that someone just wants to be heard but doesn't
want to hear. Also when I tried the link it said my message had already
been deleted, in 12 hours, not 3 weeks? Guess who goes in my spam folder
from now on.


"Hello jimk...@gmail.com,

** IMPORTANT! Please Read! **
In an effort to reduce spam, a message filtering service called TMDA has
been implemented on this mailbox.

The purpose of this message is to verify that you, a live human, did indeed
sent a message (shown below) to this mailbox.

It is IMPORTANT that you do one of the following two things:


1. Simply reply to THIS message (you don't need to type anything, just send
a blank message), or

2. Click on this link: http://mail.X.com/cgi-bin/tmda.cgi?516.
1485328250.19060.e143c1



After doing so, your messages will go through automatically, and you will
not see this message again.  If you do not reply to this email within three
weeks, your original message may be lost.

Thank you for your patience.  This one small step saves this user from a ton
of spam."


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Re: [Elecraft] I need More RX Volume on my K3, has anyone run an external audio amp?

[Roger D Johnson]

I use an amplified pair of computer speakers.

73, Roger


On 12/31/2016 5:46 PM, Harry Yingst via Elecraft wrote:

I have the K3 and a pair of SP3 speakers

When I turn down the RF gain and turn on the NR (to clean up the band noise)  I 
run out of Audio (too quiet) to hear the weaker signals.

I was curious if anyone is running a small external amp between the K3 and the 
speakers to help bring up the volume?

Thank you
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[Elecraft] Fwd: NaP3 version 5

[Roger D Johnson]

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Re: [Elecraft] genovation Keypad for sale

[Roger D Johnson]

I have the CP48 USBHID keypad which is the correct one for P3 users.
It already has the software to show as non-multimedia keyboard as
described on the NK7Z website.

$100 shipped

73, Roger

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Re: [Elecraft] genovation Keypad

[Roger D Johnson]

Jeff, VA2SS, wrote an article covering this:

http://www.eham.net/articles/32176

Unfortunately, I can't retrieve the picture that went with the article. Jeff
used a "serial port splitter" but I think a program like LP-Bridge that
generated virtual ports will work also. I ordered a USB keypad that
didn't work so have a RS232 one on order. I'll let you know how it works.

73, Roger

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[Elecraft] genovation keypad

[Roger D Johnson]

I found a good buy on a Genovation CP48 -USBHID keypad but don't know
how to get it to work with LP-Bridge and my K3. I don't see a way to assign
it to a virtual port on LP Bridge. Any suggestions?

73, Roger

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[Elecraft] K3Utility Data

[Roger D Johnson]

Where does the K3 utility store it's data? RF gain cal, AGC cal, etc

73, Roger

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[Elecraft] Help with K3

[Roger D Johnson]

Well, the "edit as new" didn't seem to work!

The rig with no front panel LEDs working is a K3.

I do have 5 volt power to the LEDs.

73, Roger

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Re: [Elecraft] Help!

[Roger D Johnson]

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[Elecraft] Help!

[Roger D Johnson]

I just finished the connector mod and replaced some of the encoders. All seemed
to go well until I noticed that NONE of the front panel LEDs were lit!

has anyone been down this road before?

73, Roger

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[Elecraft] KPA100 module

[Roger D Johnson]

I'm installing the "gold plated" connector mod and I noticed that my
PA module has a 2700 ufd cap mounted on the heat sink side of the
board between the +12 volt input and ground pins of P68B.

This cap isn't on the latest schematic (Jun 2010) and I don't see it
on any pics of the PA module! I think my module is Rev B.

73, Roger

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Re: [Elecraft] abject buffoonery

[Roger D Johnson]

For an international sewer; see 20 meters!

On 2/14/2016 12:40 PM, Jim Brown wrote:

On Sun,2/14/2016 9:17 AM, John wrote:

"A third word of advice...until you have some HF miles under your belt,
stay away from the abject buffoonery known as 75 meters."
Is there a problem with one of our bands?


There is in much of the United States. And there has been since I was first 
licensed in 1955. 75M Phone (then it was AM) has long been a sewer.


73, Jim K9YC
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Re: [Elecraft] K3: External Macro Launcher (Revisited)

[Roger D Johnson]

Now you're talking an extra Kilobuck for these goodies. A programmable keypad
is far less expensive.

73, Roger

On 12/24/2015 10:51 AM, Cady, Fred wrote:

Hi,
A P3 with the SVGA option can store 50, 124 character macros that can be 
executed with a single Ctrl-, Alt-, or Alt-Ctrl-key.  You do have to have a 
keyboard attached to the P3 but there are a variety of small wireless keyboards 
that work.
Cheers and Happy Holidays to all,
Fred KE7X

See www.ke7x.com for all KE7X Elecraft books.



From: Elecraft  on behalf of David 
Cole
Sent: Thursday, December 24, 2015 8:06 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3: External Macro Launcher (Revisited)

Please keep this discussion on the reflector...  I am also looking for
an external keypad for launching macros, that works with a P3, and a
computer in place as well...
--
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Thu, 2015-12-24 at 14:43 +, Mike VE3YF wrote:

In February of this year, there was talk of using a Genovation CP24 Serial 
Keypad which would allow either 24 or 48 macros to be stored on the keypad and 
just hit the applicable key and send a macro to the K3. Unfortunately a couple 
guys tried out this keypad and it didn't work properly with a K3.

While the idea is a great one, has anyone found a keypad that will work for 
this same purpose. It is either find another Keypad or go to something like a 
Pigknob, but the Pigknob is limited to 8 macros only.

Any ideas etc would be greatly appreciated. Tnx and Merry Christmas to everyone.


73 De Mike
VE3YF

http://www.ve3yf.com
[http://www.ve3yf.com/]
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Re: [Elecraft] 30 meter problem

[Roger D Johnson]

Sorry! It's a K3

On 11/23/2015 7:45 AM, Roger D Johnson wrote:

I've had power output problems on 30 for a while but I just noticed something
strange. I set the power to 100 watts and that's what it measures on my LP-100.
When I turn on the sub-receiver, the power drops to 88 watts! My TXGAIN on
30m is 95 which is far greater than the other bands.

73, Roger

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[Elecraft] 30 meter problem

[Roger D Johnson]

I've had power output problems on 30 for a while but I just noticed something
strange. I set the power to 100 watts and that's what it measures on my LP-100.
When I turn on the sub-receiver, the power drops to 88 watts! My TXGAIN on
30m is 95 which is far greater than the other bands.

73, Roger

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Re: [Elecraft] about 60m erp

[Roger D Johnson]

According to EZNEC, a 1/2 wave dipole up 1/2 wavelength has a gain of 7.76 dbi
at 27 degrees elevation. Most of this is due to ground reflection. My vertical 
has a
gain of 0.72 dbi. So I can run 7db more power (500 watts)!!!

73 Roger

On 11/12/2015 7:30 AM, Roy Koeppe wrote:

“Kpa500 on 60 is illegal unless you have a *measured and
documented* VERY lossy antenna that would reduce the effective radiated
power to the same as 100 watts on a dipole. The simple 99 percent answer is
that on 60m SHUT OFF the Kpa500 and run 100 watts barefoot.”

Let’s see,

“antenna tuner” loss + coax loss = -1 dB

vertical ant “pattern loss” vs. dipole gain = –2 dB (antenna shorter than 
quarter wave)

“ground loss” under vertical ant (typical) = –2 dB

total, –5 dB, or around 250 watts or so from an amp for 100 w erp?

73,   Roy   K6XK







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[Elecraft] APF

[Roger D Johnson]

Whatever happened to the plan to provide adjustable or stepped values of
selectivity for the APF function? I rigged up a kluge consisting of an old
Autek QF-1A but would much rather have it's function built-in.

73 Roger

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Re: [Elecraft] OT: Small solar array to handle just the shack, computers, and lighting

[Roger D Johnson]

On further thought, you can use a 12 volt system with boost/buck converter to 
ensure
constant voltage to the K3.

On 9/25/2015 4:05 PM, Roger D Johnson wrote:
A possible solution is a 24 volt system. The solar panels are available as are 
24 to 12

volt solid state converters.

73, Roger


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Re: [Elecraft] OT: Small solar array to handle just the shack, computers, and lighting

[Roger D Johnson]

A possible solution is a 24 volt system. The solar panels are available as are 
24 to 12

volt solid state converters.

73, Roger


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Re: [Elecraft] K3: reverse 12 volt supply

[Roger D Johnson]

On 9/14/2015 2:42 PM, Roger D Johnson wrote:

According to the schematic, there is a shunt diode on the PA board. Hopefully, 
it
prevented the full 12 volts from appearing on the circuitry. The smoke probably
came from the chokes ahead of the diode.

73, Roger


On 9/13/2015 11:09 PM, Don Wilhelm wrote:
The base K3 is protected by an in-line diode that will not allow reverse 
voltage to flow.
The same is not true of the KPA3 where the reduction in voltage would not be 
tolerable.
The KPA3 is protected by a circuit breaker, but in this case did not trip in 
time to prevent damage.


73,
Don W3FPR



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Re: [Elecraft] K3 ERR 12 V

[Roger D Johnson]

It's pretty easy to jumper around the pins.

73, Roger


On 9/6/2015 8:13 AM, Joe Subich, W4TV wrote:


What is you serial number?

Intermittent ERR 12V is one early warning sign of the "burned
12V pins" on the KPAIO3 and KPA3 boards.  If you have an early
K3 that did not have the "gold pins" on P68B of the KPA3 and
J68B of the KPAIO3, I would be making plans to get them changed.

73,

   ... Joe, W4TV


On 9/6/2015 7:12 AM, Kurt Wiksten wrote:
During the ongoing All Asia Contest, after a few hours of sleep, I started to 
call Cq on 20m using my Acom 1000+ K3 at 50 W.
After about 20 minutes I noticed ERR 12Volt and the power went down to 5 W so 
I switched off the K3 and power supply.
After some 15 minutes of thinking I restarted the power supply and the K3. I 
worked some stations and called CQ for abaut 15 minutes.

Then again I got the ERR 12V message and K3 switched to 5 W.
After more thinking and reading the Manuel, I decided to try again but this 
time monitor the supply voltage, current drain and PA temp.

I am using a regulated DC Power supply rated 13.8V and 30A.
During this 10 min I operated barefoot with K3, power at 100W.
Power supply voltage steady on 13.9V. Current drain on listning at 0.94A. 
Current drain on voice(SSB): 2 - 15A

PA-temp: 38-40 degreesC
As the power supply seems to do its job OK  I wonder if something is 
intermittently wrong with the K3 PA??

Any suggestions would be appreciated!!

73 de Kurt/SM6BGG
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[Elecraft] KSYN3A Synthesizer problem?

[Roger D Johnson]

My new boards arrived today. I popped one into the K3 for some testing. I was 
especially interested
in the low frequency performance as I like to DX the LF broadcasts from 153 to 
279 kHz. What I found
was that below 400 kHz, the noise level rises and at 100 kHz it's almost 20 over 
9 on the S meter!
I calibrated my NaP3 spectrum analyzer program and took some measurements of the 
noise level.


500 kHz  -127 dbm
400 -127
300 -124
200 -113
100 -93

That's a 34 db increase in noise level!! Is this the way the new boards are 
supposed to work?

I expected a decrease in sensitivity below 500 kHz but not this. Any ideas?

73, Roger

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Re: [Elecraft] K3 Shift and Width encoders sluggish

[Roger D Johnson]

The 4 encoders to the left of the main tuning knob all have a notchy feel
to them whereas the RIT encoder feels smooth. Is this normal? Are the
newest encoders notchy or smooth? Is the displayed frequency supposed
to change when the RIT knob is turned even when RIT is off?

73, Roger


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Re: [Elecraft] Tech Mode

[Roger D Johnson]

I think it's for Field Day or contests where someone else may be operating the 
rig. It keeps

some of the more critical items a bit better hidden.

73, Roger


On 3/7/2015 5:36 PM, Ken G Kopp wrote:

I've wondered why there's an OFF mode for TECH MODE.  Mine's never
been off since I first turned it on.  There's likely a reason, but I'm not
aware
of it.

73!

Ken - K0PP



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[Elecraft] PowerPoles

[Roger D Johnson]

There are two problems with the PowerPoles:

1. The contact pulls out of the housing due to improper assembly.

2. The completed plug assembly (contacts and housings) pulls out of the
 matching assembly on back of the K3.

Most people having a problem don't specify which problem they're having.
Consequently, many of the replies don't apply.

I have had problem 2 in part, I think, because of the large gauge heavy wires.

73, Roger



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Re: [Elecraft] CW in SSB mode

[Roger D Johnson]

It's normal, Dave. I've been trying to get Elecraft to change this for years. 
That and the adjustable
bandwidth for the APF always seem to fall through the cracks. I finally bought a 
Autek QF-1A

which helps immensely.

73, Roger


On 2/12/2015 12:38 AM, dyarnes wrote:

Hi All,

I probably missed this somewhere as I don't do SSB all that much.  I can do CW 
in SSB mode, but not when I'm operating split.  It works fine if I am not 
operating split.  I do have the menu set for SSB + CW.  Am I doing something 
wrong?


Dave W7AQK


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Re: [Elecraft] OT: CW Skimmer

[Roger D Johnson]

I think very few hams could afford the KWM-2. I'll give Collins the credit for 
the innovation

but I think the Heath SB series had a much bigger influence on the average ham.

73, Roger (former owner of the SB-101)


On 2/7/2015 10:09 PM, Fred Jensen wrote:

I'm working on my 62nd year as a ham and looking back at the history I've
experienced, I think I would credit the KWM-2 as the turning point in the
adoption of SSB over AM.  Not that the all the masses could afford it [in
todays dollars, I think it cost around $10K], and there had been the KWM-1
which didn't seem to catch on well, but the KWM2 introduced the concept of HF
Transceiver, where you transmitted exactly where you were listening ... One
Big Knob.



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Re: [Elecraft] K3 Low output 30m

[Roger D Johnson]

I meant to say same filter on 30 and 20m.

On 1/20/2015 3:49 PM, Roger D Johnson wrote:

My K3 has always had low output on 30m (ca 90 watts). I checked the TXG
(transmit gain)
figures and 40m is 64, 30m is 103 and 20m is 30. The K3 uses the same lowpass
filter on
30 and 40m. Is it possible mine rolls off too quickly at the low end?

73, Roger N1RJ

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[Elecraft] K3 Low output 30m

[Roger D Johnson]

My K3 has always had low output on 30m (ca 90 watts). I checked the TXG 
(transmit gain)
figures and 40m is 64, 30m is 103 and 20m is 30. The K3 uses the same lowpass 
filter on

30 and 40m. Is it possible mine rolls off too quickly at the low end?

73, Roger N1RJ

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Re: [Elecraft] K3 13.8 VDC power

[Roger D Johnson]

It IS possible to send the K3 off to never-never land by removing the 12 volt 
input before
shutting the radio off with the power switch. I've had it happen whilst mucking 
around

behind my desk and accidentally pulling out the Anderson power-pole connector.

If you've saved the settings using the K3 utility, you can reset everything 
using the

procedure on page 63 of the K3 manual. NOTE: This did not work with my rotor
control plugged into the ACC socket! If you didn't save the parameters, you will
have to manually reset everything! SAVE!

73, Roger


On 12/23/2014 1:30 AM, Richard Fjeld wrote:


Well, more good information.  Maybe I stand corrected.  It's been nearly 4 
years since I have read the manual, and my memory may have read more into the 
statements than it should have.


I refer to page 13, right hand column, halfway down, entitled POWER.  There 
is a note that reads To ensure correct save of operating parameters, turn the 
K3 off /before/ turning the power supply off.  When I read that, I thought 
about the short duration power failures we experience.



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[Elecraft] K3 no SSB

[Roger D Johnson]

I went to call VY2ZM on 75m SSB thia AM and nothing! I've gone thru all the 
checking proceedures

I can think of including reloading software. I'm stumped. Any suggestions?

73, Roger

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Re: [Elecraft] AT1 question

[Roger D Johnson]

Only if you have the attenuator terminated properly!

On 6/6/2014 2:57 PM, Harlan wrote:

It must be my old age setting in but I can't get my head on right.

I have an AT1 attenuator I just finished assembling. My understanding of dB 
attenuation must be off.

If I use an input of 1 volt, shouldn't I expect 0.1 volt out if I have selected 
20 dB attenuation?

Harlan
NC3C

Sent from my Verizon Wireless 4G LTE DROID
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Re: [Elecraft] K3 - Ergonomics

[Roger D Johnson]

I have only one small complaint about the ergonomics. I think the POWER button 
should
be on the top left of the panel. My last two radios had it there and I was used 
to it. I've

learned to use it at it's present location so it's a very minor gripe.

73 Roger

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Re: [Elecraft] Button of no return

[Roger D Johnson]

Careful, Bill. You're about to be flamed by the Power Pole Police! You know, 
those
that insist that insist that it takes 2700 lbs of force to disconnect PPs or 
that you, in

your stupidity, have assembled the connectors improperly!

I've had them come apart several times when futzing around the back of my desk
sending my K3 into never-never land!

73, Roger


On 3/13/2014 7:08 AM, Bill W2BLC wrote:
Yes - the dreaded Power Pole plug fall out!  I have had them fall out with 
only the slightest of movement (factory installed). Temporary solution is to 
cable tie the red/black lines to the antenna cables - thus supporting them and 
preventing movement. The final fix will be the removal of the Power Pole 
system completely, later this spring.


Bill W2BLC

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Re: [Elecraft] Button of no return

[Roger D Johnson]

I do not dislike Power Poles and use them for many cords around my station. The 
problem is that
my K3 is fed from the power supply using large (stiff) diameter conductors. 
Brushing up against
these can cause them to disconnect from the K3. If the K3 is powered up, this 
can result in the K3
going off to never-never land which requires a special, and not well documented, 
procedure to

get it running again. I think the K3 needs a better connector here.

73, Roger


On 3/13/2014 9:52 AM, Mike Harris wrote:

Not a flame just a simple power pole observation.

Never had a problem, never fallen out (K2, K3, XV50) even when tugging units 
around, soldered not crimped, no $40. crimper, not colour blind so arranged 
the cable and connectors to match the equipment.


Each to his own I guess.

Regards,

Mike VP8NO



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Re: [Elecraft] Button of no return

[Roger D Johnson]

Have YOU used one of these on a K3? I don't see any way to do it
without cutting away some of the rear panel.

73, Roger


On 3/13/2014 12:14 PM, tom armour wrote:

I am surprised no-one mentioned this.
You can buy retention clips if you have issues with disconnects: Anderson part 
# 110G68
They cost about 50 cents.
Can we drop this subject now?  it has been re-hashed many times.
73 - Tom - wa4ta


Date: Thu, 13 Mar 2014 12:05:49 -0300
From: mike.har...@horizon.co.fk
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Button of no return

I use a somewhat larger diameter than supplied cable to my K3 with a
four inch or so piece of the supplied cable with the PP's in line
crimped to it using vehicle cabling crimps.  Provides flexibility at the
K3 without adding any significant extra IR loss.

Regards,

Mike VP8NO

On 13/03/2014 11:21, Roger D Johnson wrote:

I do not dislike Power Poles and use them for many cords around my
station. The problem is that
my K3 is fed from the power supply using large (stiff) diameter
conductors. Brushing up against
these can cause them to disconnect from the K3. If the K3 is powered up,
this can result in the K3
going off to never-never land which requires a special, and not well
documented, procedure to
get it running again. I think the K3 needs a better connector here.

73, Roger


On 3/13/2014 9:52 AM, Mike Harris wrote:

Not a flame just a simple power pole observation.

Never had a problem, never fallen out (K2, K3, XV50) even when tugging
units around, soldered not crimped, no $40. crimper, not colour blind
so arranged the cable and connectors to match the equipment.

Each to his own I guess.

Regards,

Mike VP8NO



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Re: [Elecraft] Button of no return

[Roger D Johnson]

Page 63 of the manual. if you have anything on the ACC connector it must be
removed for this to work.

On 3/13/2014 11:15 AM, bwru...@gmail.com wrote:

Can you tell me where to find the procedure just in case?

73 De Brian W3BW


Brian F. Wruble, C.F.A.

Leap and the net will appear.


On Mar 13, 2014, at 10:21 AM, Roger D Johnsonn...@roadrunner.com  wrote:

I do not dislike Power Poles and use them for many cords around my station. The 
problem is that
my K3 is fed from the power supply using large (stiff) diameter conductors. 
Brushing up against
these can cause them to disconnect from the K3. If the K3 is powered up, this 
can result in the K3
going off to never-never land which requires a special, and not well 
documented, procedure to
get it running again. I think the K3 needs a better connector here.

73, Roger



On 3/13/2014 9:52 AM, Mike Harris wrote:
Not a flame just a simple power pole observation.

Never had a problem, never fallen out (K2, K3, XV50) even when tugging units 
around, soldered not crimped, no $40. crimper, not colour blind so arranged the 
cable and connectors to match the equipment.

Each to his own I guess.

Regards,

Mike VP8NO

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Re: [Elecraft] Powerpole police here....

[Roger D Johnson]

Ok...Let me ask YOU. Do you own a K3 and have you done this?

73, Roger


On 3/13/2014 2:22 PM, Art Bross wrote:



Careful, Bill. You're about to be flamed by the Power Pole Police! You
know, those
that insist that insist that it takes 2700 lbs of force to disconnect PPs
or that you, in
your stupidity, have assembled the connectors improperly!

I've had them come apart several times when futzing around the back of my
desk
sending my K3 into never-never land!

73, Roger

Powerpoles done right are wonderful. (I drink the Powerpole koolaid)  Properly 
done they are one of the least expensive 30 amp connectors at $1 per connector. 
A simple tie- rap, piece of large solder, short 'U' made of 14G wire, or even 
1/2 inch staple between the holes will keep the from coming un-done.

Refrain from futzing around the back of the desk!

Art - KC7GF


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Re: [Elecraft] Powerpole police here....

[Roger D Johnson]

Or at least kill your idiotic comments!

On 3/13/2014 2:53 PM, GRANT YOUNGMAN wrote:

I kind of hope that Eric comes in and kills this thread.

I have NEVER had the power poles “fall out” of the back of my K3.  That said, I 
don’t pick up my radio and try to throw it across the room, I don’t have my 
cables arranged where I can easily get them tangled in my feet and pull them 
loose, and I don’t rearrange my desk (apparently nearly as frequently as most) 
by sliding the radio to and fro daily.  It is true that if I were to pull the 
radio off of the front of the desk, the power poles would pull out.  It is also 
true that if I threw a brick at a window, it would likely break …

Grant NQ5T




On Mar 13, 2014, at 1:29 PM, Roger D Johnsonn...@roadrunner.com  wrote:


Ok...Let me ask YOU. Do you own a K3 and have you done this?

73, Roger


On 3/13/2014 2:22 PM, Art Bross wrote:

Careful, Bill. You're about to be flamed by the Power Pole Police! You
know, those
that insist that insist that it takes 2700 lbs of force to disconnect PPs
or that you, in
your stupidity, have assembled the connectors improperly!

I've had them come apart several times when futzing around the back of my
desk
sending my K3 into never-never land!

73, Roger

Powerpoles done right are wonderful. (I drink the Powerpole koolaid)  Properly 
done they are one of the least expensive 30 amp connectors at $1 per connector. 
A simple tie- rap, piece of large solder, short 'U' made of 14G wire, or even 
1/2 inch staple between the holes will keep the from coming un-done.

Refrain from futzing around the back of the desk!

Art - KC7GF

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