[Collins] 32S1 crystals

[Glen Zook]

Actually, the 32S- series work fine on CW when the
heterodyne crystals from the 75S- series are used. 
All you have to do is to put the Frequency Control
switch in the "Trans VFO" position.  The spotting
switch on the 32S-3 series the allows the transmitted
frequency to be put where ever you want it including
zero beating the other station.

On the 32S-1 this isn't possible.  However, I do not
recommend using the 32S-1 or 32S-2 on CW.  The
transmitter uses "sidetone" CW generation.  This can
produce up to as many as 3 signals being transmitted: 
The first being the dsired "faux" CW signal on upper
sideband.  The second is the "faux" CW signal that
appears on the lower sideband.  The final signal is
the residual carrier.  When the 32S-1 and 32S-2 first
came out the FCC issued all sorts of violation notices
to amateurs who were using the 32S-1 or 32S-2 on CW. 
The KWM-2 and KWM-2A suffer from the same problem.

The earlier versions of the 32S-1, 32S-2, KWM-2, and
KWM-2A which had a full wave (2 diode) circuit in the
balanced modulator are much worse where the residual
carrier is concerned.  Later models of all of these
units have a 4 diode full wave bridge balanced
modulator which helps very much with the carrier null.

You can very carefully align any of these sidetone CW
generator units to eliminate, for all practical
purposes, both of the unwanted signals.  However, you
have to "touch up" the alignment on a regular basis to
keep from having problems.

The 32S-3 series does not have the problem of multiple
signals.  These transmitters use true CW and only put
out one signal instead of up to three.

As for "split frequency" it is definitely possible so
long as both frequencies are in the same 200 KHz
range.  For working SSB DX (like on 40 meters) I use a
separate receiver (usually one of my 75S-1 receivers)
to listen to the DX.  Then I transceive with my
75S-3A.  I listen for the station that the DX is
working.  Many times the DX station is actually
working a "pattern".  That is instead of coming back
to a station calling on the same frequency he moves
his receiver frequency something like 50 or 100 Hz. 
The DX then moves up or down the band for several
hundred Hertz then goes the other way.

I can determine in a very short period of time what
the DX station is doing.  For example, the DX station
is moving about 50 Hz up in frequency each time a
station is worked.  I then set my frequency 50 Hz
above the last station that was worked.  In 9 times
out of 10 I am the next station worked.

As a "side note" (and not an advertisement) I do still
make the interconnect cables for the S-Line (and
several other manufacturers as well).  The details are
on the Zcomco website which is listed at the end of
this message.

Glen, K9STH

 Craig Roberts <crgrbrts at verizon.net> wrote:


Without the crystals, you can't use your transmitter
independently (which is essential for split frequency
operation and desireable for CW).

Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco


	
		
______________________________________________________ 
Yahoo! for Good 
Donate to the Hurricane Katrina relief effort. 
http://store.yahoo.com/redcross-donate3/