Quote:
Originally Posted by PJL
I bought this for £8 at a junk shop purely from curiosity as it was missing the instructions label on the bottom and I could not work out what it was for. I know now I need 2 of them to be of any use!
It is a wireless intercom that communicates over the mains wiring and includes 3 valves which I presume form an amplifier and modulator. Has anyone ever got a pair working?
This one is missing the knobs but is otherwise in very good condition and looks like something out of a 50's film.
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They do work very well! I have a pair of the three valve units, offered as a kit. The only hitch is they have to be powered from the same live plus neutral, as they won't transmit through a distribution transformer.
The US wiring scheme is 120-N-120 single phase in many places.
There was a terminal on the chassis rear for earthing as an alternative to possibly use an earth as a transmitting means. Never tried it.
Dave, always trying something different.
