[Elecraft] "Hot" K3

Ignacy no9e at arrl.net
Mon Mar 16 10:15:26 EDT 2009


Did you experiment with AGC threshold? It may be very low in your case. Then
K3 has high amplification even for very weak signals. 
Ignacy 



Don Rasmussen wrote:
> 
> 
> Guys,
> 
> My new K3 #2308 shows two to three S-units high as compared to my other HF
> radios, and lots of hiss in the speaker audio at low AF levels. It acts as
> if I had maxed out the value for the crystal filter gain in the firmware,
> or had the PreAmp on. I have made sure the gain is at zero and moved the
> crystal filters (12.5 and 2.7) into different spots, but still too hot. 
> 
> I can make it more normal with respect to AF gain and S-meter if I turn
> the ATTenuator on. I have the 2.7 filter installed and have not added any
> gain in the FL1 filter definition. I did a master reset and also loaded
> old versions of the firmware but no improvement was noted. 
> 
> I have emailed my request to K3Support at Elecraft.com, but want to post this
> to the list - anyone seen their K3 with these symptoms?
> 
> Thanks,
> Don Rasmussen
> Carlsbad, Ca.
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