{K3} Loss of audio while changing digital modes

[Bill Frantz]

I played in the ARRL RTTY Roundup today, using both RTTY and
FT8. When I changed from FT8 to RTTY, I had to change the
digital mode from DATA A to FSK D. (I run RUMlogNG in RTTY
contests, and it does RTTY using the CAT interface.) Whenever I
changed from DATA A to FSK D by pressing the buttons on the K3,
I lost all the audio out on both the headphones and the internal
K3S upgrade "sound card". The bypass was to change modes with
the mode switch and change back.

Any ideas?

73 Bill AE6JV

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[Richard Ferch-2]

I have seen something that might (or might not) be related. Occasionally
(not every time), at the end of an operating session using WSJT-X, when I
shut down WSJT-X the audio from my K3 in my headphones goes mute. I have
seen this once or twice when shutting down fldigi as well. It does not
happen with other programs I use.

I have found that tapping the SUB button twice (I have a subRX in my K3)
restores audio output.

I have no idea what causes this receiver muting and would be interested to
know the explanation if there is one.

73,
Rich VE3KI

AE6JV wrote:

I played in the ARRL RTTY Roundup today, using both RTTY and
FT8. When I changed from FT8 to RTTY, I had to change the
digital mode from DATA A to FSK D. (I run RUMlogNG in RTTY
contests, and it does RTTY using the CAT interface.) Whenever I
changed from DATA A to FSK D by pressing the buttons on the K3,
I lost all the audio out on both the headphones and the internal
K3S upgrade "sound card". The bypass was to change modes with
the mode switch and change back.

Any ideas?

73 Bill AE6JV
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[Don Wilhelm]

Rich,

That sounds like you have squelch turned on.

73,
Don W3FPR

On 1/7/2019 12:54 AM, Richard Ferch wrote:

> I have seen something that might (or might not) be related. Occasionally
> (not every time), at the end of an operating session using WSJT-X, when I
> shut down WSJT-X the audio from my K3 in my headphones goes mute. I have
> seen this once or twice when shutting down fldigi as well. It does not
> happen with other programs I use.
>
> I have found that tapping the SUB button twice (I have a subRX in my K3)
> restores audio output.
>
> I have no idea what causes this receiver muting and would be interested to
> know the explanation if there is one.
>

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[Richard Ferch-2]

Squelch? Wazzat? No, I would never knowingly turn that on. But next time
the muting happens, I will try to remember to look at the CONFIG:SQL MAIN
and SQL SUB settings to see if they have been changed somehow.

That leaves an open question: Why would tapping SUB twice, or turning the
K3's power off and back on, unmute the receiver?

73,
Rich VE3KI

Don W3FPR wrote:

That sounds like you have squelch turned on.
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