Function: Portable Receiver/transmitter.
Power source: 99 volt high tension battery (AP 3774) plus one inert 1.5 volt cell.
Frequency range: 22 to 25 MHz. On transmit, one of three "spot wave"
frequencies could be selected.
A - 22.5 MHz
B - 23.5 Mhz
C - 24.5 MJz
Receiver tuning was continuous in the range of 22 to 25 MHz.
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| Type 57 - front cover of manual |
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| Type 67 in use |
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| Type 67 controls. Click on image to enlarge.
14 - Transmitter tuning control
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