[Central-Electronics] Central-Electronics Digest, Vol 63, Issue 1

[Lynn Fisk & Georgia Keysor]

-----Original Message-----
>And since I mentioned Lynn,  another cool idea he's been experimenting 
>with is a heterodyne adapter using the output of your receiver for 
>transceiver operation.    Back in the late 50's, P&H offered their 
>"VFO-matic" that worked with Collins and Drake receivers, and 9 mhz ssb 
>exciters.  Seems like the best way to go, IMHO, unless you really are 
>going to work "split" with your 20A ;-)

Yes, the circuit Bob and I have discussed allows one to use the rf excitation from the reciver to excite the CE exciter onto the receiver frequency.  That article is found in CQ, April of 1965, and is entitled "A 75A-4/HT-32 Transceiver." Mine works, but I found that there is still some drift between the 9mhz cristal in the CE and the heterodyne crystal in the convertor, resulting in a need to re-zero beat now and then, far more often that I thought would be necessary.  So the problems is not yet completely resolved.

73, K5LYN.