[TenTec] Extend RIT on Argosy or Scout?

[Stuart Rohre]

Bill, for a fixed offset:
One idea is to add a switch to allow you to shift the PTO 5 kHz either 
way from its setting.  You could do this without drilling any holes in 
the radio to preserve its unmodified value.  To do this, you use a two 
position center off miniature toggle switch.  Hook it up on an angle 
bracket attached to an existing screw on the bottom of the radio.  Use 
flat computer cable and lead the cable into the radio where you switch 
in a padding component to shift the frequency.  The necessary components 
either caps, VVC, or inductor, could be mounted on a little daughter 
board near the PTO, and the toggle just switches DC to bring one part of 
the added circuit on line or another.  Without the schematic at hand, I 
am doing some generalization here and hand wavying, but you should be 
able to get schematic ideas from other rigs or ARRL Handbook projects 
having an RIT.

-Stuart
K5KVH