UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - M323 Mk1 with wind-up ringer???

AC/HL · 22nd Apr 2019, 12:30 pm

Probably just two wires, they could be sound powered : https://en.wikipedia.org/wiki/Sound-powered_telephone.

22nd Apr 2019, 12:30 pm	#2
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: M323 Mk1 with wind-up ringer??? Probably just two wires, they could be sound powered : https://en.wikipedia.org/wiki/Sound-powered_telephone.