Yes Bill it works fine. You need to run two instances of HRD, which
isn't a problem. What is more, you can link the radios together so one
controls the other, or vice versa. You do this by the Synch button in
HRD once you have both radios controlled by HRD. If you also have the
KXV3 transverter
David, is this the K3 or the amplifier switching to a protection mode?
The reason I mention this is that current K3 firmware (2.82) and some of
the other recent firmware suffers from loose ALC control allowing
transients to exceed the set power by a huge margin. This occurs on SSB
as opposed to CW
Hello all
It's several months since I assembled my K3. There have been half a dozen
software revisions in that time, all of which I have loaded. Some of the
revisions have been aimed at improving power control.
Should I run through the TX gain calibration process again to get the most
benefit
Joe Subich, W4TV-4 wrote:
To normalize the radio's output power for any valid test you
need to measure the single tone carrier power (e.g., CW). If
you do that (press tune at 50 watts), you will recalibrate.
The recalibration will render any subsequent measurement
incompatible
Joe Planisky wrote:
To test this, I used an audio signal generator to input single tones
of various frequencies into my K3 in both LSB and DATA-A modes. I set
the power control for 30W. Here are my measurements:
AF input freq. Po-DATA-APo-LSB
TUNE25.7
John Lemay wrote:
Hello all
It's several months since I assembled my K3. There have been half a dozen
software revisions in that time, all of which I have loaded. Some of the
revisions have been aimed at improving power control.
Should I run through the TX gain calibration process
DOUGLAS ZWIEBEL wrote:
OK...so we can send RTTY using the paddle in. What about sending RTTY
using the KEY IN (as in, use an outboard contest program to send CW
and have the K3 convert it to RY).
I know that this was supposed to be on the list but was this ever
implemented?
It was
I have just run a set of tests across a range of audio frequencies as did
Joe, KB8AP. The results were almost identical, so I am not going to tabulate
them here. In SSB I adjusted the input level to give sufficient drive and
just enough ALC action to result in a flat output from 600Hz to 2600Hz.
It was never implemented and I doubt if it has ever been on the list. In
order for this to work, the K3 would have to decode your manual sending.
When sending with a paddle, it generates the text itself from paddle
closures so no decoding is necessary.
-
Julian, G4ILO. K2 #392 K3 #222.
Walter- I'd go ahead and use the firmware that the unit was shipped with to do
all the calibration following the build. You can always do an update after and
it is very easy using the instructions on the web site and the K3 utility.
I built mine in early Jan and have done 4 upgrades without a
James,
The answer is yes. However, until recently the K3 did not use the
negative going ALC like is provided by most amplifiers. Be certain your
K3 contains the External ALC mod if you are using an amplifier that
provided negative going ALC.
By the way -- Elecraft strongly recommends that
Val-12 wrote:
Julian, the paddle generates only dots and dashes, so the decoding is
necessary anyway. But this is not a problem, after K3 has decoding
capability.
Yes, but it can quickly work out what the character is from the dots and
dashes. With hand-sent morse it has to figure out
While such a capability would be nice to have in an emergency, there are
much better tools to allow one to operate RTTY... like MMTTY which is free
to download.
I would suggest a review of AA5AU's excellent RTTY tutorial web site for
details: http://www.aa5au.com/rtty.html
73,
Bob W5OV
(NJ5DX
That's a good thought and provides instant isolation, but have some thought
about the back emf off the coil - it could exceed the rating of the keying
transistor. I measured 800V on a very fast scope many years ago from a reed
relay. Just sticking a diode across the coil will slow it down a
This week we had a little QRM with some stations struggling to hear
those running at the 10 Watt power level.
Subject matter was as always quite interesting in no particular order:
USB to serial adapters.
K3 2.82 firmware and peaky results on SSB, one net member was using
the built-in 6 dB
David,
The back emf pulse from a relay occurs when the coil circuit is opened,
and its polarity is opposite that used to operate the relay. A properly
connected diode should 'swallow' the back emf, and a capacitor in
parallel with the coil should reduce the amplitude of the pulse.
Any delay
Ah! I must have been on an exact 5W setting when I did it, then, Joe.
Thanks for clearing that up.
I still think that as it's a calibration feature, it would make better sense
by being protected by the ability to turn it off. I'd really like to hear
why a calibration feature sits there
Thanks to all. The mic is sold.
SidShusterman wrote:
Brand new! Never used. $40 includes shipping CONUS. Paypal no fee.
Reply directly to me please.
73,
Sid
I like the CW text decode feature, but only use it on my transmissions
(TX ONLY) to see how my sending is doing. I like that when using TX
ONLY the AGC doesn't go to AGC-S. I don't like that the display keeps
switching back to VFO B between words. Very distracting.
If set to CW 5--40, the
If it were me, I'd follow the assembly instructions as closely as I could.
If the assembly instructions said install latest firmware at this point
I'd do that.
The calibration procedures that were the most time-consuming and error-prone
are now automated. Synthesizer cal was always done by
Agreed. It's good to bring out these things so we are aware of ALL the
ramifications of doing things, you never know who's monitoring this channel.
There are some fast, small, non-vacuum relays that can be speeded up with a
little circuitry.
73
David
G3UNA
- Original Message -
John,
I've loaded all versions of the firmware as they've become
available, and I only have the following observation / complaint ...
Up until the current, or maybe the next-to-last version, the
output power of my K3 as displayed agreed with my several
Birds and was -well- within the 5 - 6%
It seems as if part of the problem with the power control in DATA A mode may
be that the power calibration appears to be done at an audio frequency which
is sub-optimal for this mode. Ideally, the power calibration would be done
at the point in the filter bandpass where the transmit filter's
Is this possible without the 2nd receiver?
A slip of the foot you may soon recover, but a slip of the tongue you may
never get over. Ben Franklin
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Taking the DATA A readings below at face value, the more than 2 db bump
around 1000 Hz is rather startling. I'm not sure what could cause that, but
at least to me that seems to be screaming for an explanation. There's an
old fireman's adage never go past fire to keep from being trapped by fire
W0MU Mike Fatchett wrote:
Is this possible without the 2nd receiver?
No
--
View this message in context:
http://n2.nabble.com/Listen-to-both-VFO-A-and-B-at-the-same-time-tp2330413p2330532.html
Sent from the Elecraft mailing list archive at Nabble.com.
Richard Ferch wrote:
It seems as if part of the problem with the power control in DATA A mode
may
be that the power calibration appears to be done at an audio frequency
which
is sub-optimal for this mode. Ideally, the power calibration would be done
at the point in the filter bandpass
Guy, K2AV wrote:
Taking the DATA A readings below at face value, the more than 2 db bump
around 1000 Hz is rather startling. I'm not sure what could cause that,
but
at least to me that seems to be screaming for an explanation. There's an
old fireman's adage never go past fire to keep
On Feb 15, 2009, at 2/158:58 AM, Guy Olinger, K2AV wrote:
Taking the DATA A readings below at face value, the more than 2 db
bump
around 1000 Hz is rather startling. I'm not sure what could cause
that, but
at least to me that seems to be screaming for an explanation.
There's an
YES! Thanks for all the correct responses. This link from Stewart
sums it up perfectly:
http://n2.nabble.com/K3-Narrow-CW-Filter-tp2258338p2258751.html
I had the RX EQ around my CW frequency set to +12. So, I reduced all
settings in a linear manner, by 12. After changing Menu AF Gain range
Thanks, Joe. Apparently I held the button too long when turning on the sub
receiver. I learn something new each day about the radio!
Bruce-W8fu
-Original Message-
From: Joe Subich, W4TV [mailto:li...@subich.com]
Sent: Sunday, February 15, 2009 12:39 AM
To: 'Bruce McLaughlin';
OK. I do thank you. I never linked them before. I must have held the
button too long when turning on the sub receiver/
Bruce-W8FU
-Original Message-
From: Doug Joyce [mailto:d_jo...@sympatico.ca]
Sent: Sunday, February 15, 2009 12:43 AM
To: Bruce McLaughlin; elecraft@mailman.qth.net
I'm not looking for another radio, as I've been doing what seems
obvious (to me) - using USB mode for sound card digital operation, not
DATA A. Yes, I forgo the benefit of the management of compression
setting and mic selection that comes with using DATA A - but as things
stand now one must change
So, neglecting the ~25 W vs 30 W error, it's clear that
something is keeping a tight rein on things in LSB, but
is not doing so in DATA-A.
Presumably, this is the ALC action, which we are told is
minimized in DATA-A mode.
It looks like the ALC uses the wattmeter as an input in
SSB
Bob Cunnings wrote:
I'm not looking for another radio, as I've been doing what seems
obvious (to me) - using USB mode for sound card digital operation, not
DATA A. [snip]
Yes, I can see the logic in that, which is what I had to do with the K2
before the v2 firmware was released. But I
My MP has those bumps also, and it's full of INRAD's.
With only a minor amount of Spectrogram investigation in my K3, I see a 2db
variation across the passband in the 2.7 filter. It is easily seen on RX,
particularly if one lies about how wide it is to put the DSP out at 4.0
whilst being
Graham Kimbell (G3TCT) wrote:
Julian
Before you do anything drastic like looking for another radio, can I ask a
silly question or 2?
If the output power is flat across the AF spectrum when using ssb mode,
why
doesn't everyone use it rather than DATA-A?
Well the main reason as I said
My normal RTTY contest mode is SP. I am using AFSK A mode. When I am
doing this with my K3 and FL-7000, I set my drive so I get about 300
watts out of the amp. On the rare occasion that I try to hold a
frequency long enough to run on it, I back off the power so that the amp
runs 250 watts. Not
Hi Ron,
I can't comment on whether this is normal or a problem, but I can
confirm that I see the same thing in AFSK-A mode, so it's not just
you :-) I believe it is ALC related.
73
--
Joe KB8AP
On Feb 15, 2009, at 1:25 PM, Ron W3ZV wrote:
...
Typically
when changing from 300 watts to
I for one would not like this change. I have this on my Icoms and never
liked it.
Bob Serwy - N9RS
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Nesbitt
Sent: Sunday, February 15, 2009 4:11 PM
To: 'Ken Kopp';
I am completing the installation of my KRX3. I am electing to share the
selected antenna (ANT-1 or ANT-2) with the sub receiver. I have the KAT3
installed. Do I still need to connect the 12 TMP cable between the KRX3
and J92 on the KAT3, or is this connection made somewhere else in the
The key was that I was not seeing the VFO frequency on the display. I guess
I need to hit the display key.
If I can tune both vfo's at the same time then life is grand.
Still learning the K3. I'm not that old and I can learn new tricks. A bit
of Yaesu unlearning is in process.
The reason for
Thanks, Dave, g4aon for the information. Guess I need to get a rs-232-to
usb cable from Elecraft. The 232-to-232 cable wouldn't work. The 9 pin
232 on the PC refused to be recognized. XP didn't even show a new
hardware found after it was installed between the PC the K3. It's a
pleasure to
On Sun, 15 Feb 2009 12:56:47 -0700
W0MU Mike Fatchett w...@w0mu.com wrote:
If there is a way to do this already please excuse the request.
Radio without 2nd receiver
When working split it would be nice to display your transmit frequency. Say
you have 21.295 for VFO A receiving K5D and
W0MU Mike Fatchett wrote:
If there is a way to do this already please excuse the request.
Radio without 2nd receiver
When working split it would be nice to display your transmit frequency.
Say
you have 21.295 for VFO A receiving K5D and VFO B at 21.305 for transmit.
While I see the
BigAlT wrote:
You only need to connect a TMP cable to J92 on the KRX3 if you want to
use an auxiliary input for the KRX3 ( either via the BNC connector that
comes with the KRX3 or via the KAT3 antenna terminal that is not being
used for the main RX and TX, you can use only one of these
Got it now! Thanks to all who responded directly and so quickly. Finally
got through this think skull of mine!
73 de Terry, WØFM
___
I am completing the installation of my KRX3. I am electing to share the
selected antenna (ANT-1 or ANT-2) with the sub receiver.
Sorry if this has been answered before, but I glanced through archives and
didn't really see this exact problem.
I just finished installing the KRX3 Subreceiver and as usual the instructions
were excellent!
Everything tested OK per the instructions and before I take the radio apart and
re-check
Sorry if this has been answered before, but I glanced through archives and
didn't really see this exact problem.
I just finished installing the KRX3 Subreceiver and as usual the instructions
were excellent!
Everything tested OK per the instructions and before I take the radio apart and
re-check
Do you have Sub AF Nor and Spkrs 2 set?
Willis 'Cookie' Cooke
K5EWJ
--- On Sun, 2/15/09, Tad Williamson ironbutt...@yahoo.com wrote:
From: Tad Williamson ironbutt...@yahoo.com
Subject: [Elecraft] Problem with Split Receive Audio?
To: elecraft@mailman.qth.net
Date: Sunday, February 15,
I assume you have a stereo headset?
A slip of the foot you may soon recover, but a slip of the tongue you may
never get over. Ben Franklin
_
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tad Williamson
Sent: Sunday, February 15,
Jim,
I don't worry about the negative comments. Just because a couple people
don't like something does not mean that many others do.
I have noticed that this list can be a bit on the harsh side especially with
new user type questions.
Ideas and or thoughts are tossed out the Elecraft. If
Just started happening today.
MCU 3.80.
I tap power (to shut it off, just as I've always done)
The LCD goes all-orange, no segments. The Rx goes off.
If I power cycle the power-supply the K3 comes back on in normal
operation.
Strange.
--
Jeff Wandling DE W7BRS K3 #2105
Hi Jeff,
Have you done the 12V Sense mod?
http://www.elecraft.com/K3/mods/KPA3_12V_Sense_Modification_Rev_A.pdf
73
--
Joe KB8AP
On Feb 15, 2009, at 4:46 PM, Jeff Wandling W7BRS wrote:
Just started happening today.
MCU 3.80.
I tap power (to shut it off, just as I've always done)
The
Greetings,
I'm performing initial configuration/filter loss compensation. I have the
following filters (slot #) - BW:
(1) 13.0 kHz (FM)
(2) 2.8kHz
(3) 1.8 kHz
(4) 0.40 kHz
(5) n/a
I noticed that in the Owner's Manual, for Configuration/Filter Loss
Compensation, it suggests using 1-2 dB
Hello Walter!
I'd use the latest guidance. The Utility is being updated to match. It
is possible to measure the loss directly suing a stable signal source,
but it isn't critical.
For 1.8 kHz filter, I suggest 0 dB.
73,
Lyle KK7P
Having the actual transmit freq PROMINENTLY displayed when you transmit on
CW with the decoder working would be a nice confirmation that you are indeed
xmitting where you think you are (split or not) - just listen to the K5D
xmit freq - looks like lots of folks need lots of reminders of just
Walter,
The manual is updated periodically, but the information in the K3
Utility is usually more recent.
Even using the most recent data, remember that even that information is
only an average. Filters of the same width can vary in their actual
loss. So use the most recent data as a good
Merv,
As the ads for a popular brand sauce mix say its already in there.
Check your CONFIG menu setting for SPLIT SV. When set to NO, the split
is lost when changing bands, but if set to YES, the settings for SPLIT,
RIT, and XIT are saved on a per-band basis.
Per-band means that the settings
Had this same problem. I am not using a USB- just a regular COM port. I
finally had to switch to the Kenwood TS 940 driver in n1mm. The K3 driver
would go into transmit as soon as I would try to select the DTR function.
Glenn
-Original Message-
From: elecraft-boun...@mailman.qth.net
K3 #2252 Factory built, now adding KRX3. Do not want an exotic setup, just want
to listen on one frequency and transmit on another - same band, same antenna.
Completed installation with no problem, Used good static mat and wrist strap.
Uploaded latest firmware. Unsed Config Menu to initialize
Graham and Everyone.
Every since I started using my K3 I never was comfirtable using data A mode for
sound card digital communications. I have had lots of success using SSB mode.
73
Dave KD1NAJulian
Before you do anything drastic like looking for another radio, can I ask a
silly question or 2?
We had another good SSB net today (1800Z) on 14.316 MHz. We had 24
participants today, and there were a
number of good questions and comments. The topics discussed included
compression settings and voice quality,
optimized RX EQ settings, ATU functions and other issues. Several stations
got
Having a quick split feature would be great! My IC-7800 has that, and I
miss it on the K3. Hold split, enter the up split frequency (up 1, up 5,
etc.) and the seconnd VFO is there. No counting or adding.
Lou, W0FK
W0MU Mike Fatchett wrote:
snip
Yaesu has a feature called quick split
Problem solved, my lack of a detailed reading of the calibration steps was the
culprit, when I Looked Up Calibration and did those steps on the main and
sub, working great.
73,
Al
W6GBG
- Original Message
From: Allan Bacon baco...@yahoo.com
To: Elecraft@mailman.qth.net
Cc: Allan
Is there such a list? If not it might be a great resource for new K3
owners.
I will start.
Keying the K3 in QSK requires the radio also have VOX enabled and set to
full break in.
Default RTTY is AFSK if you are going to run FSK you need to change it for
each band.
Make sure your mark is set
Good Evening,
Conditions were good today. The RTTY contest was nowhere near our frequency
as had been feared. That is good. There was some QRM but nothing untoward. I
was getting sunny reports from much of the US except California. The folks
down there were telling me rain, rain, and
bill wade wrote:
Thanks, Dave, g4aon for the information. Guess I need to get a
rs-232-to usb
Using a real RS232 interface is almost always better than a USB one
for amateur radio work.
cable from Elecraft. The 232-to-232 cable wouldn't work. The 9 pin 232
on the PC refused to be
Same here.
Its only on AFSK-A, not on FSK D.
Henk PA5KT
Joe Planisky schreef:
Hi Ron,
I can't comment on whether this is normal or a problem, but I can
confirm that I see the same thing in AFSK-A mode, so it's not just
you :-) I believe it is ALC related.
73
--
Joe KB8AP
On Feb
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