Frequency Jam and Transmission Puzzle

257

02:37:43

The idea is a frequency sounds like you are jamming when you are sending intelligence on that frequency.

Two transmitters and two receivers are used.  Top transmitter sends jamming at first of pulse cycle then second transmitter sends intelligence portion at back half of cycle.

First receiver is to turn on and off second receiver to collect the secret intelligence.

What type of Multiplexer and Demultiplexer circuits used is not known.  I have no circuit on how this WWII communication was done.

The method was patiented in 1953.

A puzzle for someone to try.

published 7 years ago

kiani

7 years ago

Here is an analogue mux demux i have done earlier, you can use the circuit and develop an Anigma machine, if you like,, http://everycircuit.com/circuit/5838085576458240

lmccoig

7 years ago

Since this is 1940' s circuit they must have used tubes in on and off to do such fast switching and combine two signals on same frequency.

kiani

7 years ago

Don't know what they were transmitting, probably not even normal speech, just word codes perhaps,, they must have used valves, high voltage ones,, it was 1950,s when moon travell happend, very primitive electronics,,, germanium diodes and transistors. but probably military grade..

lmccoig

7 years ago

Who went to moon in 1950's?

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