[Elecraft] [K3] K3 - intermittent CW chirp

[LB3SA]

Thanks for your response Tim. It's nice to see that it isn't just me that is
going mental! :)

I'm surprised however that Elecraft has not responded yet but they may not
have seen the message.

It does work fine with the TX button activated but I hope it's not really an
acceptable workaround in the long run. And you do have to constantly monitor
yourself on a second receiver to be sure all is OK.

Further testing reveals that (with WIDTH setting to 450kHz or wider):

When SHIFT is set to 0.55; the problem happens on all frequencies from
3.577.06 - 3.577.16.

When SHIFT is set to 0.60; the problem happens on all frequencies from
3.577.11 - 3.577.21.

When SHIFT is set to 0.65; the problem happens on all frequencies from
3.577.16 - 3.577.26.

This frequency range is where I spend 90% of my time since ity is Norway's
local CW rag chew area so it is important to me that the radio works here.

73,
Are - LB3SA



AI9K wrote:
> 
> 
> 
> LB3SA wrote:
>> 
>> I'm sorry to hammer the board with all these messages but I found one
>> more criteria for the chirp to appear:
>> 
>> I have all 8 pole filters: 250Hz, 400Hz, 1.8kHz, 2.8kHz an 6.0kHz
>> installed in the main RX. I am not able to reproduce the problem when
>> WIDTH is set from 400Hz or less. It's only from 450Hz and up I get the
>> problem. The chirp goes away instantly as I hit 400Hz or lower.
>> 
> 
> To all - 
> I see the problem here too - I have checked 80,40,20,15 & 10M and see it
> on all bands in a very narrow range of frequencies as noted before. The IF
> shift changes things also as noted. I hear very distinct clicks when this
> is happening also.
> 
> I have found a workaround...if the XMIT button is tapped, the red TX led
> comes on AND all the chirp and 'clicks' are gone! This tells me there is a
> problem going from receive to transmit only on these noted frequencies.
> Going into 'XMIT' mode never allows the radio to get into 'receive' mode -
> hence the problems disappear.
> 
> I have sent a more detailed email to Wayne on this issue.
> 
> Tim
> 

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