electron Tube Data sheets
	Transmitter / Receiver TR1143

This is my little collection of TR1143 parts. The TR1143 was a British transmitter / receiver used for airplanes and ground stations during WW2. The frequency range is 100..124 MHz. Output power of the transmitter is some 10 Watts using 2x TT11 (VT501).

Photos
Transmitter Type 46, Serial 44107 This transmitter seems to be converter by a radio amateur for use at 2m.
Receiver Type 71, Serial 36435 This receiver was probably used for spareparts. There is not much left except for some tube bases and mf filters.
Transmitter Type 50, Serial 2068 This transmitter is still rather complete. It could be restored to operate again.
Receiver Type 71, Serial 37687 This receiver was converter for FM reception. The last mf filter coil was modified and an extra base for a 6H6 is fitted. The modifications are not very neatly done. I would be surprized if this has ever worked as FM receifer.
Receiver Type 68, Serial 41688 This receiver misses some components and could be restored to operate. It looks like it was originally equipped with 8 crystals in stead of the usual 4.

Documents

Here is the circuit of the transmitter as I drew it: Type 50 circuit diagram

Documentation (2,424,525 bytes) (nl) Thanks to Jan van de Riet.

Type50 transmitter circuit (176,294 bytes) Thanks to Jan van de Riet.

Type71 receiver circuit (193,714 bytes) Thanks to Jan van de Riet.

From Victor Johnston I received this circuit diagram.

Some links

Air Ministry equipment numbers

SpitfireSpares

The electronic equipment in the Lancaster