Followed me home today...
 

A local garage sale and it was on my block! --I wasn't sure what the Heathkit IG-5237 was used for, but it's test equipment.

The old Zenith Wave-magnet antenna could be a nice display piece. Also included, a Bakelite GE model 62 5 tube clock radio (no pic)all for the grand total of $25.

Of course, no manual for the Heath--is it to align FM radios?

Your Heathkit is a rarity - only produced for a couple of years. I was looking for one back in the pre-internet days, and had no luck. I ended up getting a Leader FM Composite/Stereo Generator. Your Heathkit, the Leader (LSG-something, I can't remember) and the Sencore SG-165 were the first FM Stereo generators for most techs.

RF output on your Heathkit looks to be 300 ohms balanced. Kinda odd - all of the others I've seen were mod'd for 75 ohm output. Easy to do - just stuff the balun behind the front panel and come out via a BNC jack or female F fitting.

Zenith Wavemagnets, if good, command a nice price on fleabay.

Cheers,