[Elecraft] Determining zero-beat

[Wes Stewart]

http://elecraft.365791.n2.nabble.com/Ref-Osc-Cal-Method-4-td2595451.html

--- On Fri, 12/3/10, Pete Smith <n4zr at contesting.com> wrote:

> From: Pete Smith <n4zr at contesting.com>
> Subject: [Elecraft] Determining zero-beat
> To: "Elecraft List" <elecraft at mailman.qth.net>
> Date: Friday, December 3, 2010, 4:09 AM
> I want to use my K3 to calibrate the
> QS1R receiver used here as part of 
> the Reverse Beacon Network.  For technical reasons,
> it's desirable to 
> calibrate the QS1R at as high a frequency as possible, so I
> wanted to do 
> so in the 6-meter band.  I thought that if I knew how
> accurate the K3's 
> frequency display was at 10 MHz WWV, I'd know whether I
> needed to 
> compensate for any systematic error when comparing the two
> up on 6M.
> 
> Here's where the problem comes in.  AM mode isn't
> usable for finding 
> zero-beat, of course.  On CW, it appears that the
> zero-beat frequency is 
> displayed as 10 MHz minus the "pitch" frequency (which can
> only be 
> adjusted down to 300 Hz).  I'd like to know the
> frequency accuracy of 
> the K3 within 20-30 Hz if possible for this exercise.
> 
> How to proceed?
> 
> -- 
> 73, Pete N4ZR
>