Biaural-Pseudo Stereo-spatial
are some names given to technics, where mono is transformed to stereo.
Simplest is RC/CR net where 3db-points of Left and Right channels coincide.
Here we have amplitude split. Published studies for specially CW and
FONE filters
used to have OpAmp filters to make
I can't wait to learn Morse!
I'll have the K3 quite a time before I have reasonable Morse - but I'm
working on it - am suffering the same problems Elecraft are - my Morse
delivery is delayed by
To many other things going on in my life!
HiHi
On 22/9/07 22:50, W6NEK [EMAIL PROTECTED] sent:
I have an external SGC to a long wire, it tunes up on every band. I plan on
putting up some form of non-specific dipole so I only need to tune that.
Apart from not knowing if the KAT3 could handle the long wire, the tuner is
external to keep the RF out the shack. Therefore I would like to be able
I might have missed something - the KAT3 will remember its setting per ANT
socket?
But how do you stop it attempting to tune again - maybe one just doesn't
worry about it.
Setting the tuner to a 50 ohm load is a better way of 'bypassing' it
than removing all the autotuner's capacitors and coils
Okay...had to give it a try. Just worked him on 40m after about 3
minutes of calling. 2.5 minutes spent calling blind. Then I heard
him call a G3, found the G3 on VFO B (no dual rx) and I was the next
call.
Doug has confirmed that his QSO followed mine. I was using my K2/100 at
100W. An
In a recent message, David Ferrington, M0XDF [EMAIL PROTECTED]
wrote ...
I can't wait to learn Morse!
I'll have the K3 quite a time before I have reasonable Morse - but I'm
working on it - am suffering the same problems Elecraft are - my Morse
delivery is delayed by
To many other things
Hi Randy:
I believe it will be a stand-alone device, NOT requiring a 'host PC'.
73,
Tom Hammond N0SS
At 22:01 09/22/2007, Randy Downs wrote:
I hear that Elecraft will be producing a panadaptor? Will this be a
hardware interface with pc based software for the pana? Hopefully
so. Maybe
Hi David:
The KAT3 will NOT re-tune unless you TELL it to do so!
When changing from one band/antenna to another, the KAT3 will select
the last-used
L-C set for that band/antenna and use that set unless you press the [ATU TUNE]
button to force it to retune.
So, assuming you have already
Steve Kallal wrote:
Further to yesterday:
The common fix for this problem is to use the tx frequency lock feature in
most of the digital comm software. Can I assume that the tx and rx
frequencies will match if I use the same filter for tx and rx? In my case,
this would be the OP1 filter. I
I think many of us would use the K3 not only on HF but also for VHF
because of the excellent phase noise characteristics and dynamic
range.
As such a sequencer build into the K3 would be ideal to switch the PA
and antenna relays.
Would it be possible to make an option board for this.
This
Give the E guy's a break and build your own sequencer,or buy one from DEM
for $90, 73 kf4yox
Hf -3456Mhz
- Original Message -
From: Ron Meiring [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Sunday, September 23, 2007 7:18 AM
Subject: [Elecraft] K3 and Sequencer
I
Hello Ron,
Yes I am.
I raised this issue several month ago during the announcement of the K3.
I did suggest the Ten-Tec solution which works fantastic.
Before RF gets out (either from the main antenna or transverter RF-out), the
TX-Request initiated by the PTT/VOX/Key from the K3 (which should be
Plated through holes.
Dan / WG4S
snip
I wonder if they used a bummer board, just to get a photo in?
/snip
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Sir,
It's always good to exchange thoughts about the possible use and features of
Elecraft products. I know the products of DEM but all of them doesn't
prevent the exiter to give RF if one piece of the added hardware isn't
working properly.
73's Evert PA2KW
-Original Message-
From:
Hi Evert,
prevent the exiter to give RF if one piece of the added hardware isn't
working properly.
This, I suppose, would be fairly easy to do with an external piece of
hardware, assuming that the various devices/switches offer you some kind
of feed back, and you route your keyer, foot
Eric, Wayne, et al FTers:
The posted assembly manual suggests the use of an RF 50-ohm dummy
load with low VSWR across the range of 160 meters through 6 meters.
Later, under the TRANSMITTER section, Connect a dummy load capable of
dissipating 5 watts to the ANT1 output.
Which begs the question
Fellas:
Not being a VHF guy, please help me understand the need for a sequencer...
The K3 already issues a T-R relay output closure some tome before RF is
generated at it's output. This allows external devices 'down stream' of
the K3 itself to actuate their T-R relays so they will be in-line by
Hi Ron,
you are not alone - be sure!
This (sequencing) is also (IMHO) related to SemiBK/QSK mode in CW
without possibility to use only PTT. I hope this is already on some
wish-list.
And TX INHIBIT method mentioned by Evert is also very good idea.
I know that group of VHF/UHF/SHF operators
David Ferrington, M0XDF wrote:
I might have missed something - the KAT3 will remember its setting per ANT
socket?
Yes.
But how do you stop it attempting to tune again - maybe one just doesn't
worry about it.
It only tunes if you press TUNE. Wayne has said that he might add some
more
David,
It still works the same - tune the KAT3 (or KAT2) output that is to
connect to the autotuner into a dummy load on each band. Thereafter, do
not press TUNE when that antenna is selected.
If you need to provide RF to tune the external autotuner, reduce the
power if necessary and press
Hi Doug , et al:
At 08:08 09/23/2007, DOUGLAS ZWIEBEL wrote:
The posted assembly manual suggests the use of an RF 50-ohm dummy
load with low VSWR across the range of 160 meters through 6 meters.
Later, under the TRANSMITTER section, Connect a dummy load capable of
dissipating 5 watts to the
Tom,
That is exactly the point - 20 ms is often not enough time to change
antennas and protect the preamps located on the tower. My CW PTT
addition to the K2 does provide a 'TX-enable' function and has found
application in several VHF installations that I am aware of. It is also
used in at
Visit my website, David. There is a program there called MorseGen
which will help you. I used it to generate MP3 practise files that I
copied to a cheap Chinese MP3 player that I carry around in my pocket
so I can practise receiving whenever I get a spare moment.
--
Julian, G4ILO K2 s/n: 392 K3
Hi
The headphone jack on my K2 has turned belly up, which I underestand
is quite common.
Does anyone know of an easy way to change it out without damaging the
RF board.
I've been thinking about trying to cut it into small bits with wire cutters
so that maybe I take the pins out of the rf board
Yep. That board works FB. There's just not a lot of excess solder on many
pads as often occurs when hand soldering. For folks used to seeing a nice
fillet on each wire, a perfect machine-soldered board using plated through
holes may have many pads that look downright anemic. Actually, this is
what
Is there any way that I can use one of the programs that turn the PC sound card
into a signal generator to inject some amount of noise into the radio at
various points for testing? I'm not confident in my very rudimentary antenna,
and while I understand that the sound card can't output at a
Yes that is the method I used.
I have replaced mine thrice:
1. Used snippers to cut the plastic apart.
2. Cut metal vertically if necessary until I can deal with one pin at a
time.
3. Used a solder sucker, the vacuum cylinder kind that looks like a
syringe. If you have never used one, you
Hi Tom (and others),
I think Don answered almost complete to your question but
I'd like to elaborate a little on this subject which is unnecessary for and
even unknown by most HF operators.
For serious VHF/UHF operation, it is important to have a system with low
noise figure (typical between
Per Rev.G,May 29,2007 Manual
Greetings All,
...Having made it to Page 44, after the initial power
up to initialize the EEPROM (verified by the INFO 201
display), the K2 was turned off and then back on after
a few seconds, and the display only gives me ELE,
not
ELECrAFt, as was to be
Dear Don
This is my last e-mail, sent some days ago.
My K2/100 is working again
I replaced D16 and D17, resoldered all components of the wattmeter
circuits, and all problems with swr and power readings were solved.
Many, many thanks for your help.
I was not so happy with the ATU/100.
When you
Eric/Wayne
Will we be able to make order changes prior to final depatch
And would you have additional extra of things like 100w PA which you can
stand being ordered? And changes to a built K3 for example vs kit?
Thanks
Simon DL4PLM
Simon Lewis
GM4PLM/DL4PLM
http://www.dl4plm.net
The best antenna I have is a piece of wire about 30ft long with a 100pF cap on
the end as mentioned in the article. I tried U1 pin 1, and get nothing. I
suppose that would indicate a problem...but I'm not sure where.
Not much point in going backward, because anything behind that will certainly
Tim,
IIRC, that 'ELE' indication is a sign that pin 1 of the front panel 40
pin socket has not been soldered.
Peer under the LCD to see if that condition is present.
If pin 1 is not soldered, it is almost impossible to solder it from the
bottom without removing the LCD (don't try that unless
Raimon,
Re-adjust the null of the KAT100 wattmeter - it is almost, but not quite
right. After you re-do the null, you will have to go through the power
calibration and SWR calibration again.
The reason that you see the SWR indication on low power and not on high
power is because a scaling
Just a question as I start thinking of intergrating my SHF station into the
K3 that I ordered
Is the transverter interface capable a single line connection ie
bidirectional or only 2 sep connections??
thanks
Simon DL4PLM/DL4PLM
Simon Lewis
GM4PLM/DL4PLM
http://www.dl4plm.net
...sorry, don't see the connection
Yeah..you and Norman Hsu!
LOL
de Doug KR2Q
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I am a K3 field tester. Yesterday morning I had an interesting situation.
I live half a mile from a serious SSB DX'er. I am a CW DX'er. We both
use Bencher Skyhawks, and each antenna can easily see the other.
I was tuning 20 CW, and Rich came on on 20SSB. He is presently using a
Kenwood
Hi
My Profi II came with a chunk of this stuff. Anyway you might find it at a
store that sells wood working tools or power tools. The mat is used to hold
the work piece when using a router. Good luck
Don Brown
KD5NDB
- Original Message -
From: David Ferrington, M0XDF [EMAIL
Doug (KR2Q)
When I built my K1 and K2 I used a 4 1/2 digit bench multi-meter, it's quite
old but I was able to get it calibrated for free.
Since then I mostly use a very cheap 3 1/2 digit LCD hand held unit that cost the same as a replacement MN1604 battery! It claims
0.5% basic accuracy and
Doug,
I've been quite happy with a B+K 2704B I got a few years ago for about
$50; a quick Google search for 2704B shows they're now $60.
In addition to the usual current, voltage, and resistance it can measure
transistors (if you want to match them, though it doesn't do frequency
Thanks all, I have a mentor and I'm using K4FON's Morse trainer - just need
to put the time in.
On 23/9/07 17:00, Julian G4ILO [EMAIL PROTECTED] sent:
Visit my website, David. There is a program there called MorseGen
which will help you. I used it to generate MP3 practise files that I
copied
On 9/23/07, David Ferrington, M0XDF [EMAIL PROTECTED] wrote:
Thanks all, I have a mentor and I'm using K4FON's Morse trainer - just need
to put the time in.
Man, this K3 frenzy is causing everyone to screw up callsigns lately.
Hah! It's Tom, N0SS and Ray, G4FON's awesome CW trainer.
--
JT
Doug,
My first post here is my DMM advice. When I was younger, i bought cheap meters.
They worked but not for long, just wouldn't hold up to field work. I got smart
and spent the $175 for a Fluke and have never regretted it.
Here's some advice, no matter what brand you buy... Look at the sample
Randall,
Is this a K1 with the 2 band board or with the 4 band board?
The Pre-mixer and the bandpass filter must be tuned before you will hear
much of anything.
Since you have no strong signal source (like another transceiver that
you can operate into a dummy load) to help you tune the
Josh makes a good point about the sampling rate. On the cheaper meters,
they are slow responding, while the better meters are faster. In my
experience, even the modern cheap meters are sufficiently accurate and
will do an adequate job for tasks like assembling the K3 as long as you
are
test test
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Help:
Don, W3FPR wrote, My Fluke looks and feels like it could be tossed against
a brick wall and sustain no damage..
But would you WANT to toss a meter costing hundreds of dollars against a
brick wall?? Just kidding, but it makes a point that drives my choices in
DMMs.
Send any order changes ASAP to [EMAIL PROTECTED] or give us a phone
call. Make sure to include your call, date of original order and if
possible, order confirmation number if ordered via the web.
73, Eric WA6HHQ
Simon Lewis wrote:
Eric/Wayne
Will we be able to make order changes prior to
The other guys have gone into all the technical aspects of whether
you should buy a $4.99 Harbor Freight special or a $300+ Fluke, so I
won't do that. Instead, let me offer this analogy. If we were talking
antenna tuners here, the $5 HF special would be akin to an MFJ while
the Fluke
We've posted two versions of the K3 quick-start guide that use line
drawings. These should produce excellent results when printed (and will
use a lot less ink, too!).
There are two different resolutions (sm is about 300 kb, lg is
about 2.2 Mb):
KR2Q:
I've been using a 30 year old RS VOM for basic continuity checks and
voltage checks (AC mains, batteries), but those in the know say NO NO
NOget a DMM.
Your VOM is probably adequate for what you need
in assembling the K3.
7. Digital Multimeter (DMM) for voltage and resistance
Wayne, I find it absolutely amazing that you
and the team are so open to incorporate these
many user's wants and wishes into the K3.
Also the assembly manual is a work of art.
73, Joe, aa4nn
Example: how to select PTT CW vs. Full/Semi QSK
we got the message :)
73,Wayne,N6KR
Hi Gang,
I have been tolerating an intermitant problem with the display on my K2
for several months now and finally I've decided to dig in and fix it.
Here is the problem, After powering up the radio, the LCD display will
go blank. Sometimes after 5 minutes , sometimes after 45 minutes. The
Good Evening,
The QRN was not too bad this evening. Enough to cover a few of you
until QSB brought you up a few notches, but not painful as it normally is
Sunday evenings. The oddest note I heard was on NM7N, who lives in
Beaverton, Oregon. He sounded like he was over the pole and I
VK4TZL Replied to me:
Hi Ronnie,
I agree with your idea of a sequencer inside the K3.
Both the K2 and the K3 have delayed keying, but it is not long enough
for multiple external devices to settle down.
It may happen in time as Eric and Wayne catch up on the wish list
that is getting
With the KXV3 option in the K3, it is very easy to do real-time receiver
comparison testing between the K3 and brand X.
1. Connect the antenna to the K3 ANT1 (or, ANT2) jack.
2. Connect a coax between RX OUT on the K3 and the RX ANT IN on the brand
X. (If brand X does not have a RX ANT IN
Hi, Bob!
That sort of behavior is almost always caused by a missed solder joint. The
lead lying in the plated solder pad hole made good enough connection for a
while, but it is getting more oxidized over time and so the contact is
getting worse and more intermittent.
Don, W3FPR, will certaily
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