All good stuff to know from back then.
In the late fifties I flew single channel till I bought my first hand held transmitter. A Orbit.
I went to a farm sale here and found a like new Morton M-5 engine stuffed in a five gallon bucket. My bid bought it for twenty bucks.
I sold it to a guy in the north west and bought a Kraft Singular series which I use for years till I went back to Orbit radios and then to JR.
My model friends used Micro avionics and Proline radios here also.
I even had a friend that bought one of the first Space Control bricks. He put it in a Smog Hog and we both flew it around one Sunday and he was flying it and lost all control
and it flew away never to be seen again.
Lots of fun in those days?? Not!