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raspy cw audio on K3--but OK after power cycle

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ae7us

raspy cw audio on K3--but OK after power cycle

I just turned on the rig, went to the CW portion of 20 meters, and when I
tuned in on a strong CW signal, the audio was raspy and distorted. After
turning the radio off and then on again, the signal sounded normal. Any
ideas?

Thanks,

Rocky, AE7US
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David Gilbert-2

Re: raspy cw audio on K3--but OK after power cycle

Not sure how you expect anyone to help with so little information provided.

Did it happen only once or was it repeatable? Do you have other gear
(amp, SWR meter, antenna switch, autotuner, powered speakers, etc)
connected to the K3 that get activated when the K3 turns on? Did the
problem show up on headphones or speakers?

Did you only check one strong signal the first time or did you try
others? In other words, how do you know that the raspy signal wasn't a
temporary problem on the other end?

But yes, I suppose the problem could have been a scratchy relay in the
K3 somewhere. That just seems less likely to me than other possibilities.

Dave AB7E

On 9/21/2020 1:33 PM, Rocky AE7US wrote:
> I just turned on the rig, went to the CW portion of 20 meters, and when I
> tuned in on a strong CW signal, the audio was raspy and distorted. After
> turning the radio off and then on again, the signal sounded normal. Any
> ideas?
>
> Thanks,
>
> Rocky, AE7US

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Rick Bates, NK7I

Re: raspy cw audio on K3--but OK after power cycle

Occasionally the filters, shift center, NR or NV kick in and I've always
written that off as random output from the computer. A filter reset
(long push on the shift knob) or a mode change usually brings it back to
what is wanted.

73,
Rick NK7I

On 9/21/2020 1:49 PM, David Gilbert wrote:

>
> Not sure how you expect anyone to help with so little information
> provided.
>
> Did it happen only once or was it repeatable? Do you have other gear
> (amp, SWR meter, antenna switch, autotuner, powered speakers, etc)
> connected to the K3 that get activated when the K3 turns on? Did the
> problem show up on headphones or speakers?
>
> Did you only check one strong signal the first time or did you try
> others? In other words, how do you know that the raspy signal wasn't
> a temporary problem on the other end?
>
> But yes, I suppose the problem could have been a scratchy relay in the
> K3 somewhere. That just seems less likely to me than other
> possibilities.
>
> Dave AB7E
>
>
>
>
> On 9/21/2020 1:33 PM, Rocky AE7US wrote:
>> I just turned on the rig, went to the CW portion of 20 meters, and
>> when I
>> tuned in on a strong CW signal, the audio was raspy and distorted.
>> After
>> turning the radio off and then on again, the signal sounded normal. Any
>> ideas?
>>
>> Thanks,
>>
>> Rocky, AE7US
>
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>
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ae7us

Re: raspy cw audio on K3--but OK after power cycle

Thanks for the replies. This is an intermittent problem that has happened
a few dozen times over the past several weeks. The audio is distorted on
both headphones and speaker. Nothing else powers up with the rig other
than a P3.

On Mon, Sep 21, 2020 at 2:37 PM Rick NK7I <[hidden email]> wrote:

> Occasionally the filters, shift center, NR or NV kick in and I've always
> written that off as random output from the computer. A filter reset
> (long push on the shift knob) or a mode change usually brings it back to
> what is wanted.
>
> 73,
> Rick NK7I
>
> On 9/21/2020 1:49 PM, David Gilbert wrote:
> >
> > Not sure how you expect anyone to help with so little information
> > provided.
> >
> > Did it happen only once or was it repeatable? Do you have other gear
> > (amp, SWR meter, antenna switch, autotuner, powered speakers, etc)
> > connected to the K3 that get activated when the K3 turns on? Did the
> > problem show up on headphones or speakers?
> >
> > Did you only check one strong signal the first time or did you try
> > others? In other words, how do you know that the raspy signal wasn't
> > a temporary problem on the other end?
> >
> > But yes, I suppose the problem could have been a scratchy relay in the
> > K3 somewhere. That just seems less likely to me than other
> > possibilities.
> >
> > Dave AB7E
> >
> >
> >
> >
> > On 9/21/2020 1:33 PM, Rocky AE7US wrote:
> >> I just turned on the rig, went to the CW portion of 20 meters, and
> >> when I
> >> tuned in on a strong CW signal, the audio was raspy and distorted.
> >> After
> >> turning the radio off and then on again, the signal sounded normal. Any
> >> ideas?
> >>
> >> Thanks,
> >>
> >> Rocky, AE7US
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to [hidden email]
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Ignacy

Re: raspy cw audio on K3--but OK after power cycle

Once my old K3 2k series had a signal that was > 20 KHz wide and jammed
dxpeditions nearby. The problem subsided on its own although the receive was
OK all the time.

Perhaps reseating the modules would help.

Ignacy NO9E

--
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