[Elecraft] K3 - 2.73/1.98 Clicks on Power On

Iain MacDonnell - N6ML k6iam at dseven.org
Fri Dec 12 12:56:56 EST 2008


I'm even getting a very loud blast of noise when I power on on 80m band
with no signal. I'm pretty sure the problem is that the AGC hasn't
activated yet. If I turn the AGC off, I get the same level of noise as
the blast on power-on.

This started with one of the recent firmware updates.

     ~Iain



Ken K3IU wrote:
> I just tried power Off/On using earphones with speakers muted.I hear the 
> same loud artifact with the earphones and through the speakers when 
> there is a signal on the vfo freq.
> 73, Ken K3IU
> 
> Ken K3IU wrote:
>> I notice the same thing, but only when there is a signal on the 
>> frequency tuned in on the K3 when power is turned ON. AF gain set at 
>> about 9 o'clock, CONFIG:AF GAIN HI. With no signal on the tuned 
>> frequency, the loud audio does not happen. I did not notice this on 
>> previous firmware versions. Later this morning I'll reinstall previous 
>> firmware and double check.
>> 73,
>> Ken K3IU
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Stewart Baker wrote:
>>> Hi,
>>> Since installing MCU 2.73. I have noticed that power on is 
>>> accompanied by a number of loud, rather unpleasant clicks/clunks 
>>> from the speaker.
>>>
>>> 73
>>> Stewart G3RXQ
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