[Motorola] Motorola Tube Amps

[Glen Zook]

I owned the Motorola reconditioned equipment center
for the south-central United States from 1970 until
Motorola went out of that end of the business in 1979.
 We reconditioned equipment for a 14 state area,
everything reconditioned that was exported, and
everything that the U.S. Government bought
reconditioned (was the "height" of Viet Nam and the
government did buy some reconditioned equipment!).

Thus, there is very little (if any!) equipment that
Motorola built from the 1960s until 1979 that I
haven't seen.  Actually, since we got in all of the
trade-in equipment that Motorola received, I saw some
pretty old equipment not only of Motorola manufacture
but from every other manufacturer as well.  Of course
the newer "foreign" (Motorola called anything but
Motorola "foreign") equipment came in as well.

As far as I know, Motorola never built anything with
the 8122, but they sure liked the 8072 on UHF!

As for the 4CX250 "B" series 100 watt UHF amplifier: 
I believe that the problem may have been in the
bandpass filter that was in the output.  I have an old
"B" amplifier that I use on 432 MHz CW from which the
bandpass filter has been removed.  I consistantly get
150 watts out of the amplifier using the "normal"
power supply.  The power doesn't fall off like it does
when used with the bandpass filter in the 450 - 470
MHz range.

We shipped almost as many "single ended" 8560A units
as the "dual" 8560A units over the years.

Glen, K9STH


--- Mike Clarson <mclarson@rcc.com> wrote:

Can't believe I never saw an 8560A single ended
Motorola amp.

=====
Glen, K9STH

Web sites

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


	
		
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