Back in the late 70s, I built a lot of VHF Engineering kits. I have recently come across all of the kit manuals; and they're still in fairly good condition. I'm currently in the process of digitizing them and will be putting them in PDF format for easy downloading. I will post a Dropbox link as soon as the job is completed.
Included will be the following:
PS-15C power supply (complete with the pinout for the NE550 chip)
TX-144 & TX-220 transmitter kits
PA-50 Power Amp kit
Modifications to add a GLB frequency synthesizer
GLB frequency synthesizer kit and mods (complete)
RX-144C & RX-220C kits with mods and extra shielding to prevent intermodulation
The radios themselves were stolen from my vehicle when I was visiting New York city in 1985; and were never recovered.