Drake Mods - R-7 Variations
Authored by VE3EFJ
14.1 VARIATIONS
The R-7 and R-7A was also used as a base for commercial applications. These units comprised the RR-3 and the R-4245. The latter receiver used a synthesizer instead of a PTO. Both of these receivers were commercial grade. The R-4245 had a companion transceiver, the TR-4310. This *likely* is the TR-7 or TR-7A in disguise.
The R-7 used the NB-7A Noise Blanker. I have had enquiries asking what the difference is to the NB-7 used in the transceivers. I do not know for sure, but my guess would be that the NB-7A was marketed for the receivers only and did not include the components to enable the signal path for transmit.
