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You can see them in action at Avoncroft Museum of Historic Buildings[0] which includes a working telephone exchange. About a mile from there is Droitwich Trans
by PoachedSausage 6y ago
You can see them in action at Avoncroft Museum of Historic Buildings[0] which includes a working telephone exchange.
About a mile from there is Droitwich Transmitting Station, an ArtDeco era station, see page 13 of [1] for exposed knife switches with 400V.
[0] https://avoncroft.org.uk/avoncrofts-work/special-collections/ https://avoncroft.org.uk/avoncrofts-work/special-collections...
[1] http://www.bbceng.info/Operations/transmitter_ops/Reminiscences/Droitwich/droitwich_calling2.pdf http://www.bbceng.info/Operations/transmitter_ops/Reminiscen...
- barrkel 6y agoThere's a functional mechanical switching relay, the kind triggered off of the clicks of a rotary dialing wheel, attached to two phones at the communication museum in Frankfurt https://www.mfk-frankfurt.de/ https://www.mfk-frankfurt.de/ and you can dial one phone from the other, and see the relays move as you enter the numbers.