[Heathkit] DX-100B on Phone - bad audio distortion /oscillation

Ron Youvan ka4inm at tampabay.rr.com
Mon Dec 5 17:13:22 EST 2011


   James M. WB2FCN Walker wrote:

/*snip*/
> When I hear a station on a frequency I want to work, I turn on the
> oscillator in the
> transmitter, and zero beat the station I am listening to. All the
> transmitters go into
> a "Dummy Load" until the antenna is "tasked to it". No signals on the air,
> NO annoying whistles, or swishing, generated "On Air"!
 > I think that is a courtesy to the guys that are listening to the station
 > transmitting.

   If you had a more conventional arrangement where you have the transmitter and receiver share the 
same antenna via change over switch or relay, "spotting" would still cause no problem to other 
operators.

   When I got my first HAM transmitter (a very used DX-100) I built a solid state TR switch in a 
tiny home made copper box 1 1/14" square and a 1/4" thick that I bent up and soldered together, and 
screwed to the back of the plate tuning capacitor, my first contact was QSK. (full break in keying)

> "Prior Planning" and all that. Of course I can only speak for my stations.
> No pops no squeals, just the sound of the transmitter, quieting their receiver,
> when it is my turn to talk!
-- 
    Ron  KA4INM - Did you know ...
                  ... that no-one ever reads these things?


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