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R.A.F. Henlow Signals Museum Exhibits

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Transmitter_Type_T1509=0114.jpg Transmitter_Type_T1540=0182.jpg

Transmitter_Type_T21C=0055.jpg Transmitter_Type_T5017=0039.jpg
Transmitter
Type T1509		Transmitter
Type T1540		Transmitter
Type T21C		Transmitter
Type T21C		Transmitter
Type T5017

Transmitter Type 21C.

This transmitter (and its receiver Type TF) was introduced into service in 1918 for use in aircraft to provide two-way communications.

In some respect these were not very practical as they worked on Medium and Long wave and required a long aerial.

They were in use throughout the 1920s and even had uses in WWII, mostly as pack sets.
Transmitter<br>Type T21C

Transmitter Type T21C (Photograph Number 0054)

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