[TMC] GPR-90-RXDS Manual Reprint Available

[Roy Morgan]

At 11:30 PM 4/10/2004 -0400, WA5CAB@cs.com wrote:
>The GPR-90-RXDS,  ... has provision for external input of the HFO, IFO and 
>BFO.

GPR-90 folks,

These signals were provided by one TMC VOX-5 or similar master oscillator 
(Northern Radio made the model 105 master oscillator of similar 
nature.).  It generated HFO oscillator signals from a variable master 
oscillator or one of three crystals in an oven, the IFO is the normally 
crystal controlled intermediate local oscillator, about 3.7 to 4.0 mc, and 
the BFO was crystal controlled in the 450 to 500 kc range, with one of two 
switch selectable non-oven crystals available (for uppper or lowe side 
band, perhaps).  Each of the three outputs has three paralleled BNC 
connectors for driving two (or three) receivers.

My VOX-5 is slowly getting overhauled.  Remnants of former mouse residents, 
and no B+ are among the things to fix.

Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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