UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Transmitter Tuning unit TU-5B WW2 Find

Hans PE1KWH · 20th Sep 2020, 9:48 am

These TU's are used for the mentioned BC375 but also for the BC191 transmitter.

The first was mainly used in large aircraft ( multi engined bombers ) and powered with the board voltage of 28 Volt DV.

The BC191 was the 14V version of the same transmitter.
The only difference is al large resistor in the top which regulates the heater voltages.
The BC191 is not that scarce because it could be run from a car battery on charge so pretty easy to use as a ham or pirat. The BC375 is much less found.

If anyone like to swap a BC375 for my BC191F please let me know.
It could come with the right dynamotor.

20th Sep 2020, 9:48 am	#8
Hans PE1KWH Triode Join Date: Jul 2016 Location: Hilversum, Netherlands Posts: 33	Re: Transmitter Tuning unit TU-5B WW2 Find These TU's are used for the mentioned BC375 but also for the BC191 transmitter. The first was mainly used in large aircraft ( multi engined bombers ) and powered with the board voltage of 28 Volt DV. The BC191 was the 14V version of the same transmitter. The only difference is al large resistor in the top which regulates the heater voltages. The BC191 is not that scarce because it could be run from a car battery on charge so pretty easy to use as a ham or pirat. The BC375 is much less found. If anyone like to swap a BC375 for my BC191F please let me know. It could come with the right dynamotor.