[Elecraft] On zero beating

[cyr999@extremezone.com]

Hi George - 

I love this idea - but am I missing something? Are you saying that you are 
operating normal cw, at up to 10 watts, with Spectogram hooked up? Doesn't the 
power have to be way down to avoid damaging the sound board on the computer? 
What happens when you key out? In short: I want to try this, but how are you 
doing it exactly? Thanks, Tim

Quoting "George, W5YR" <w5yr@att.net>:

> That "ultimate spotting tool" is as near as your computer connected to
> your
> radio audio output and running any of the PSK31 programs with a
> waterfall
> display or the SpectroGram program. 
> 
> With such displays, one can readily identify the offset tone frequency
> being heard and can then adjust the tuning to present exactly the
> desired
> tone. For example, I prefer an offset of 700 Hz so I have a waterfall
> marker set on my PSK31 program at 700 Hz. When tuning in a CW signal,
> I
> merely tune until the signal "track" is placed under the marker. Then
> I
> will be transmitting directly upon the other station's frequency and
> will
> hear that station at an audio frequency of 700 Hz.
> 
> I have found this method superior to all others, plus it gives you a
> panoramic display of other cw signals within the receiver filter
> passband
> being displayed.
> 
> Of course, this approach requires that a computer be present and
> running
> the proper program so it wouldn't have much appeal for portable
> operation
> unless a laptop were available. But, for home station use, it is a
> valuable
> tool to have when working CW.
> 
> 72/73/oo, George W5YR - the Yellow Rose of Texas         
> Fairview, TX 30 mi NE of Dallas in Collin county EM13qe   
> Amateur Radio W5YR, in the 56th year and it just keeps getting better!
> QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771
> Icom IC-756PRO #02121  Kachina #91900556  IC-765 #02437
> 
> All outgoing email virus-checked by Norton Anti-Virus 2002
> 
> 
> Steve Lawrence wrote:
> 
> > Perhaps the "ultimate" spotting tool would be to measure the audio
> > frequency of a received CW signal and display it -- perhaps at the
> touch
> > of a button.  Knowing your sidetone is set to, say 700Hz, you could
> then
> > adjust the dial frequency so the received CW signal is also at 700
> Hz.
> > Since the K2 has a frequency counter logic, perhaps this feature could
> be
> > implemented?
> 
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