Randy sent in these links:
By Bob Mosley
I shared this old photo with Steve Belknap showing a transmitter I scratch built in 1968 when I was in 9th grade and he asked if I would write up something about it.
I built the 3 channel transmitter from a schematic in MAN (Model Airplane News). I bought the electrical components from Shanks & Wright, Milo and Western Radio (they were located on Kettner Blvd and India St. and are all gone now). I measured the lead spacing and drew a PC board trace pattern on quad paper. I etched the PCB with ferric chloride after covering the copper with electrical tape and cutting it with a #11 and straight edge, then drilled the holes after etching.