[Elecraft] Zero beating

[Don Brown]

Hi

I had a friend over a few weeks ago that is a captain for AA and flies 767's. I was working on his K2 and doing the final tune up when he asked me how to zero beat the sidetone. When I tuned up WWV and hit the sidetone button I told him to listen for the wow-wow sound of the beat. Suddenly he got it and said it is the same as balancing the speed of two aircraft engines when flying, something he had been doing for years. I think we have all heard the drone of two engines on an aircraft or boat but I had never thought of explaining a zero beat that way but that is exactly what it is.

Don Brown
KD5NDB


  ----- Original Message ----- 
  From: Tom Hammond<mailto:n0ss at earthlink.net> 
  To: Joe - aa4nn<mailto:aa4nn at earthlink.net> ; elecraft at mailman.qth.net<mailto:elecraft at mailman.qth.net> 
  Sent: Sunday, September 19, 2004 10:17 AM
  Subject: Re: [Elecraft] Using the K2's 10th S-meter LED for CW Tuningindication



  I've never really needed it! I've been doing aural zero beating for so many 
  years (46 now) that I can usually get within a few tens of Hz even without 
  hearing the sidetone, and within 10 Hz when using the sidetone.

  For those who haven't developed to knack, or who just like bells (err, 
  LEDs) 'n whistles, the CW Tuning Indicator is a nice adjunct.

  Tom