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

[James M. Walker]

Well now,
Actually, I think you read more into my statement than is there "Sir"!

My "systems" ARE indeed sharing the same antenna, as in transmit/receive 
switched.
The transmitters can be switched to a dummy load, which allows me to tune up
without putting a signal on the air! Convention is what the owner/user says 
it is.

Lots of folks have "conventional" setups I prefer "NOT" to Jam a station 
that is
transmitting! "YMMV" I believe that is one of the uses for "Dummy Loads"

Everyone has the license and freedom to "design" how their station will 
function,
most don't take the time to do that. "EOS"

Jim
WB2FCN
http://eshop1.chem.buffalo.edu/



----- Original Message ----- 
From: "Ron Youvan" <ka4inm at tampabay.rr.com>
To: "h" <heathkit at mailman.qth.net>
Sent: Monday, December 05, 2011 5:13 PM
Subject: Re: [Heathkit] DX-100B on Phone - bad audio distortion /oscillation


>   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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