[Elecraft] K3: birdie on 50.045?

[Joe Subich, W4TV]

> when I am on 50.045.05 with PRE on I hear a low continuous tone. 
> With PRE off it disappears. When I twist the shift, the tone gets 
> lower or higher in frequency. (lower when shift to the right) 
> When I switch the filter from FL5 (500) to FL4 (2100) the 
> tone appears at 50.045.95.

I observe the same conditions although the frequency is slightly  
different - probably due to different filter offsets and CW pitch.  
After looking, I see similar "signals" at 50.030 and 50.078 that 
change tone with the "shift" control. 

In all three cases, the responses are the same with either antenna 
or no antenna.  The response drops if the attenuator is engaged.

73, 

   ... Joe, W4TV 
  



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dr. 
> Werner Furlan
> Sent: Monday, May 12, 2008 5:50 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] K3: birdie on 50.045?
> 
> 
> when I am on 50.045.05 with PRE on I hear a low continuous tone. With 
> PRE off it disappears. When I twist the shift, the tone gets 
> lower or higher in 
> frequency. (lower when shift to the right) 
> When I switch the filter from FL5 (500) to FL4 (2100) the 
> tone appears at 
> 50.045.95.
> The tone obviously comes from inside the transceiver, because 
> switching 
> the antenna does not change it. 
> 
> Can anybody this phenomenon?
> 
> 73! de Werner OE9FWV
> 
> -- 
> "Einige halten Fussball für einen Kampf auf Leben und Tod. Aber ich 
> versichere Ihnen, dass es weit ernster ist."
> Bill Shankley
>