UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

bigus01 · 11th Nov 2017, 7:59 pm

I have a 332 phone fitted with a 184 handset. The phone works fine with the original carbon transmitter. To improve outgoing sound quality I have tried to upgrade to an electret microphone. For some reason, despite connecting to the same contacts as the carbon mic it will not work. I have tried a genuine 21A GPO transmitter and also the cheaper alternatives with no success, refit the old carbon and all's fine again. Any idea's gratefully welcomed.

11th Nov 2017, 7:59 pm	#1
bigus01 Retired Dormant Member Join Date: Nov 2017 Location: West Yorkshire, UK. Posts: 38	GPO 332 transmitter issue I have a 332 phone fitted with a 184 handset. The phone works fine with the original carbon transmitter. To improve outgoing sound quality I have tried to upgrade to an electret microphone. For some reason, despite connecting to the same contacts as the carbon mic it will not work. I have tried a genuine 21A GPO transmitter and also the cheaper alternatives with no success, refit the old carbon and all's fine again. Any idea's gratefully welcomed.