[Elecraft] freq.accuracy?

[Ron D'Eau Claire]

There are two oscillators in the K2 that can produce a frequency "error":
the Local Oscillator and the Beat Frequency Oscillator. 

It is the SUM of these two errors that produce the total error you see on
the frequency display. 

The mixing scheme reverses how they interact on the higher frequencies
compared to the lower frequencies. In your case, it appears that the error
in these two oscillators is subtracting from each other on the lower bands,
reducing the total error you see to less than the error of either
oscillator. That's typical of most K2's that I have seen data on. 

Because of the way the mixing scheme works, these errors will then ADD on
the higher bands, thereby increasing the total error you see. 

Ron AC7AC
K2 # 1289



-----Original Message-----
Found the same behaviour on my K2.
-rob
----- Original Message -----
From: "N0SA" <n0sa@earthlink.net>
To: <elecraft@mailman.qth.net>
Sent: Saturday, May 03, 2003 6:23 PM
Subject: [Elecraft] freq.accuracy?


> I just added the drift compensation mod to my K2/100, SERIAL #3045. It
does
> a great job. ... when I get up above 18Mhz my K2 
> seems to be about 120Hz off freq. Whereas on 18 and below I am wiyhin 
> 30 to 40 Hz. I was just wondering if this is within reason or should 
> the higher freq's
be
> closer?
> Larry  N0SA