[Elecraft] Re: Mystified with KPA 100 4 MHz audible tone

[wayne burdick]

On Feb 14, 2005, at 12:33 PM, <gehringc at charter.net> wrote:

> I verified that I can in fact hear the two identical and separate 
> tones by adjusting the trimmer C27 in the KPA 100.  I am just not sure 
> what the intent of the adjustment is other than to verify the two 
> sources for the audio tone on 80 meters.  What am I doing when I 
> adjust C27 to move to tone above the 4 MHz region?
>
> 73 KI4DGH
> Chuck G.

Hi Chuck,

The adjustment is provided just to ensure that the KPA100's oscillator 
doesn't fall below 4000 kHz. If it did, it could conceivably interfere 
with on-air signals. You can use C27 to position it slightly above 4000 
kHz if necessary.

The K2 itself also has a 4000 kHz oscillator, which gets adjusted to 
exactly 4000 kHz as part of the alignment. This will not interfere with 
LSB signals at or below the band edge.

73,
Wayne
N6KR


---

http://www.elecraft.com