[Elecraft] K3 module wanted

[John Mathey]

Does anyone have a KXV3 or KXV3B they would be willing to part with?  I am 
looking to get dedicated Rx antenna port.
Thanks in advance
K3 s/n 1693

73, John/K8AZT
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Re: [Elecraft] DX Clusters reccomendation

[Jim Brown]

A better approach is this tool from VE7CC.

http://www.bcdxc.org/ve7cc/

It allows you to select the countries and even US states and VE 
provinces from which you want to see spots. It's easy, for example, to 
see only spots from your region, so that you see only what skip allows 
your to work. Or, if you're a contester, you can choose to see spots 
both from your region and at a distance from you, so that you can see 
who in your region you can't hear thanks to skip, and who at even 
greater distance may be using a frequency where you want to call CQ (in 
a contest).


I'm in NorCal, and I choose to see spots from stations west of the 
Rockies, from KH6 and KL7, and from MD, which gets me W3LPL, which tells 
me where EU stations are running. The cluster I connect to is VE7CC-1, 
which gets spots from the worldwide network, and allows me to see or 
reject Skimmer spots. I've used this arrangement since someone turned my 
on to it at least 15 years ago.


73, Jim K9YC

On 7/28/2022 7:42 AM, kd...@frawg.org wrote:

Your first choice to try are some of the more "open" clusters:
VE7CC-1
W3LPL

Part 2 is interpreting what you see. Since many DX Clusters report everything 
they are sent worldwide, Log4OM is probably like other loggers in that there is 
a way to limit what you see to a distance range circle around your locator. You 
should consult the Log4OM docs for setting that parameter.



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Re: [Elecraft] Systematic error in spots as heard by K3

[Mike Harris via Elecraft]

I should clarify a loose and potentially misleading last sentence. The 
GPSDO 10MHz external reference clocks a frequency counter that monitors 
the TXCO actual frequency and this number is used to control the synths, 
not the number you have set in REF CAL doing WWV calibration. Nothing 
touches the TXCO.


Regards,

Mike VP8NO

The drift of the internal TCXO is easily displayed from a
cold start. The GPSDO ref osc knocks out the drift.
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Re: [Elecraft] My K2 lost audio

[Don Wilhelm]

Chris,

Do you still have sidetone?  If so Control Board U9 is still active, so 
check the MUTE signal and CB Q6 and Q7 operation.


If you have the KDSP2 installed, remove it and install 2 wire jumpers 
one between CB J1 pin 1 and CB J2  pin 1.  The second jumper between CB 
J1 pin 2 and CB J2 pin 2.

If that restores the audio, you have a problem on the KDSP2.

73,
Don W3FPR

On 7/29/2022 2:07 PM, Chris wrote:

A quick update on this.  George, W1JHR, suggested checking the faulty
headphone jack.  It could be an easy fix, but my case is different because
I don't get audio on the headphone jack either.  The issue seems to be
somewhere on the AF circuit.

I get the audio back if I leave the radio turned off long enough, but it
disappears about 10 minutes after powering on, so something must trigger
the loss of receive audio.  Any suggestions will be helpful.

Many thanks,

Chris KM1B


On Tue, Jul 26, 2022 at 10:43 AM Chris  wrote:


Hello,

I have two K2/100, and one of them developed an issue last night.  It
suddenly lost audio.  The S-meter is working, and it transmits fine but no
receive audio.  When I leave it long enough, the audio comes back
occasionally, then goes off.  I get the same results from the headphones,
so the issue must be in the AF section.  Any suggestions?

Many thanks,

Chris KM1B



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Re: [Elecraft] My K2 lost audio

[Chris]

A quick update on this.  George, W1JHR, suggested checking the faulty
headphone jack.  It could be an easy fix, but my case is different because
I don't get audio on the headphone jack either.  The issue seems to be
somewhere on the AF circuit.

I get the audio back if I leave the radio turned off long enough, but it
disappears about 10 minutes after powering on, so something must trigger
the loss of receive audio.  Any suggestions will be helpful.

Many thanks,

Chris KM1B


On Tue, Jul 26, 2022 at 10:43 AM Chris  wrote:

> Hello,
>
> I have two K2/100, and one of them developed an issue last night.  It
> suddenly lost audio.  The S-meter is working, and it transmits fine but no
> receive audio.  When I leave it long enough, the audio comes back
> occasionally, then goes off.  I get the same results from the headphones,
> so the issue must be in the AF section.  Any suggestions?
>
> Many thanks,
>
> Chris KM1B
>
>
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Re: [Elecraft] Systematic error in spots as heard by K3

[Andy Durbin]

"k3wyc said:

> ... The spotted frequency should be the suppressed carrier frequency ...

I don't think so. Most modern CW rigs that I am aware of, including the K3,
display the actual transmitted frequency on the dial, not the SSB
suppressed carrier frequency."


I agree.  Kenwood TS-590 also offfsets dial frequency by CW pitch.  Sorry for 
the error.

Suppressed carrier frequency would only be applicable if using MCW with the 
modulation source external to the rig. 

Andy, k3wyc
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[Elecraft] elecraft...@groups.io

[Howard Hoyt via Elecraft]

Hi Doug,

While this general Elecraft group is a great resource, you and other 
Elecraft KX-series owners should join the over 6000 dedicated Elecraft 
KX-series owners in our elecraft...@groups.io. Wayne Burdick and several 
other Elecraft personnel are also members, and we look forward to seeing 
you there!


Cheers & 73,
Howard Hoyt / WA4PSC
elecraft...@groups.io moderator

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Re: [Elecraft] Systematic error in spots as heard by K3

[Pete Smith N4ZR]

I agree, Rich - I had used the Elecraft calibration procedure with WWV 
to make sure it's dead zero-beat, when I first noticed this phenomenon.  
Done at 10 MHz before, this time at 15 MHz,  which seemed to be slightly 
different, so now we'll see how the spots sound.  Could be all it was - 
more precise calibration at the higher frequency.  I hope so.


Wish I didn't have such a tin ear hi.

73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at .
For spots, please use your favorite
"retail" DX cluster.

On 7/28/2022 11:20 PM, Richard Ferch wrote:

k3wyc said:


... The spotted frequency should be the suppressed carrier frequency ...

I don't think so. Most modern CW rigs that I am aware of, including the K3,
display the actual transmitted frequency on the dial, not the SSB
suppressed carrier frequency.

That is why the spotted frequency should not depend on the choice of
sidetone if the rig is tuned to the signal correctly. If the displayed
frequency on the dial was the suppressed carrier frequency, then spotted
frequencies would depend on the sidetone, but that is fortunately not the
case with most modern radios. The microprocessor in the radio takes care of
the offset calculation.

If someone has a rig without adjustable sidetone and they prefer to listen
to a different tone than their rig's sidetone, they need to be aware that
when they listen this way they will be transmitting on a different
frequency than the signal they are receiving, and also that frequencies
they spot will be incorrect.

If spots seem to be consistently to one side or the other of your sidetone,
though, my first thought would be that there could be a frequency
calibration error in your rig. An easy way to check would be to tune to the
WWV carrier with the rig in CW mode. With the dial on exactly 10.000 MHz,
the carrier tone you hear in the receiver should be the same as your
sidetone. In SSB, on the other hand, the WWV carrier should not be audible
(it should be at 0 Hz) with the dial on exactly 10.000 MHz.

73,
Rich VE3KI
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