Just a couple of comments that may help CBB:
1) Do you know the frequency? Are you sure it is RF?
yes, the transmitter and receiver both have an antenna, both have crystals, and both have RF "canned coils...luckily, nobody was stupid enough to play with any tuning, all coils are still sealed safely under a gob of wax.
2) Are the component identification numbers legible?
Yes, all ids are plainly visible, and are VERY common...even today. I was able to find them very easily. Its mostly 2 buffers, and a bunch of NPN switching transistors...equiv to 2n2222's.
3) You mention a "reed switch." How many reeds? Is the unit old enough to be the early reed-type of multi-channel receiver? I thought those disappeared in the early 60's, but that date might off a bit.
The reed switch is only used as an on and off switch. Since it is a sub, and needs to be sealed watertight, the easiest way to have a ON/OFF switch was to have a sliding magnetic switch on the outside of the model, triggering a reed switch onside to turn on.
Believe it or not, Reed switched receivers, along with an amplification tube was still in use up to the 70s in model usage. I have a COX transmitter/receiver unit that is simply an antenna, a tuned coil, a small tube, and a bunch of reed relays...dated 1972
John