Frequency range: Short wave, From 20 to 100 metres.
Modes: CW or ICW (MCW)
Power output: 250 watts on CW; less on ICW
Frequency control: Assumed to be crystal.
If anyone can provide any further information, please contact: email@example.com
|Looking for a photo of the TN21.|
Credits and Contributors:
1) Marconi Archive, Bodleian Library, Oxford