K3 Audio blast issue still there with FW 3.41 / 2.37

[Richard Squire - HB9ANM]

On two occasions, I had that issue with the audio blast. Only on 160m so far.

After changing bands, I held TUNE to check the SWR, it was OK except I heard TWO short, high-tone beeps when pressing the button, although SW TONE is permanently OFF.
Tried again, the two beeps came again and this time, after pressing TONE again to switch back to RX, I heard a short, but deafening, scratching audio blast.
Third trial: two beeps again but no blast.

After power cycling the K3, all was back to normal. Only one, lower-tone beep as usual holding XMIT/TUNE.

This happened twice after switching from another band to 160m.
Never happened in the last 18 months up to and including Beta 3.30.

K3 Serial # 586
ATU installed but always bypassed when in the shack
Sub receiver installed but OFF on 160m
KDVR installed
2.7 MHz and 400 Hz filters

73 Richard – HB9ANM

[N5GE]

On Wed, 14 Oct 2009 11:45:41 -0700 (PDT), Richard Squire
<[hidden email]> wrote:

>
>On two occasions, I had that issue with the audio blast. Only on 160m so far.
>
>After changing bands, I held TUNE to check the SWR, it was OK except I heard
>TWO short, high-tone beeps when pressing the button, although SW TONE is
>permanently OFF.
>Tried again, the two beeps came again and this time, after pressing TONE
>again to switch back to RX, I heard a short, but deafening, scratching audio
>blast.
>Third trial: two beeps again but no blast.
>
>After power cycling the K3, all was back to normal. Only one, lower-tone
>beep as usual holding XMIT/TUNE.
>
>This happened twice after switching from another band to 160m.
>Never happened in the last 18 months up to and including Beta 3.30.
>
>K3 Serial # 586
>ATU installed but always bypassed when in the shack
>Sub receiver installed but OFF on 160m
>KDVR installed
>2.7 MHz and 400 Hz filters
>
>73 Richard – HB9ANM

Richard,

In Firmware version 3.41 the added functionality below was added to
help Elecraft diagnose Audio Blasts.

If your K3 does not display "FFFF" you should send the reading to
Elecraft's technical staff [hidden email].

>From the feature list of the Version 3.41 Firmware...

* DSP INTERNAL STATUS MONITORING: In the TECH MD menu entry,
tapping 1 (main) or 2 (sub) displays DSP status information. If it is
"FFFF",
no error has been detected. Tapping CLR resets the data to "FFFF".

73,

Tom, N5GE

[hidden email]
K3 #806, K3 #1055, PR6,
XV144, XV432, KRC2,
W1 and other small kits.

2 W2's on order
1 K144XV on order

http://www.n5ge.com
http://www.swotrc.net

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[Richard Squire - HB9ANM]

Thanks, Tom. Yes, I read about this functionality and I used it.

But it's FFFF both ways...

73
Richard - HB9ANM

Radio Amateur N5GE wrote

On Wed, 14 Oct 2009 11:45:41 -0700 (PDT), Richard Squire
<[e-mail]> wrote:

>
>On two occasions, I had that issue with the audio blast. Only on 160m so far.
>
>After changing bands, I held TUNE to check the SWR, it was OK except I heard
>TWO short, high-tone beeps when pressing the button, although SW TONE is
>permanently OFF.
>Tried again, the two beeps came again and this time, after pressing TONE
>again to switch back to RX, I heard a short, but deafening, scratching audio
>blast.
>Third trial: two beeps again but no blast.
>
>After power cycling the K3, all was back to normal. Only one, lower-tone
>beep as usual holding XMIT/TUNE.
>
>This happened twice after switching from another band to 160m.
>Never happened in the last 18 months up to and including Beta 3.30.
>
>K3 Serial # 586
>ATU installed but always bypassed when in the shack
>Sub receiver installed but OFF on 160m
>KDVR installed
>2.7 MHz and 400 Hz filters
>
>73 Richard – HB9ANM

Richard,

In Firmware version 3.41 the added functionality below was added to
help Elecraft diagnose Audio Blasts.

If your K3 does not display "FFFF" you should send the reading to
Elecraft's technical staff [e-mail].

>From the feature list of the Version 3.41 Firmware...

* DSP INTERNAL STATUS MONITORING: In the TECH MD menu entry,
tapping 1 (main) or 2 (sub) displays DSP status information. If it is
"FFFF",
no error has been detected. Tapping CLR resets the data to "FFFF".

73,

Tom, N5GE

[e-mail]
K3 #806, K3 #1055, PR6,
XV144, XV432, KRC2,
W1 and other small kits.

2 W2's on order
1 K144XV on order

http://www.n5ge.com
http://www.swotrc.net

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[Frank R. Oppedijk]

Hi,

Today I again experienced an audio blast. A difference with the
previous time was that the blast now lasted only 1 or 2 seconds and
then went away. Previously, switching off the K3 was the only way to
stop the blast.

The TECH MD DSPINFO says 0032 for the main rx and 0002 for the sub rx.

I'm running the 3.44 beta.

Cheers,

Frank PA4N

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[wayne burdick]

Frank,

Sounds like you've stumbled into a very rare combination of settings.  
Lyle guessed that this might occur, and he'll eliminate this  
possibility when he gets back from vacation.

73,
Wayne,
N6KR

----
http://www.elecraft.com

On Oct 17, 2009, at 5:58 PM, "Frank R. Oppedijk"  
<[hidden email]> wrote:

> Hi,
>
> Today I again experienced an audio blast. A difference with the
> previous time was that the blast now lasted only 1 or 2 seconds and
> then went away. Previously, switching off the K3 was the only way to
> stop the blast.
>
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