Gents, about old radio’s for who is interested,

During the world champion ships in 1963 in Genk Belgium, the second place was for Frits Bosch using the German Telecont 9 radio system with tone filters and relays see picture 1. Both Ed (Orbit reeds radio) and Frits were beaten by Ralph Brooke with his Orbit early proportional, see picture 2.

It is possible that Ralph Brooke did use the early Orbit 5 + 1 analog proportional radio of which I show the pictures 3 and 4, you can see the coils in the receiver as part of tone filters to translate the audio frequencies I in a useable voltage, two coils and capacitors for each channel.
It is interesting to know Orbit “reeds” was beaten by Telecont 9 during (one of) the latest world championships with tip-tip radio using pilots.
And were these systems reliable? Of course and also the Man Machine Communication was much easier.

Cees