Type C M S Spy Radio Receiver-Transmitter
Year 1943 - 1944

 I haven t a lot of information regarding this nice spy transceiver. It s usually called the CMS equipment . It s small and light. The wooden sweetcase have spaces for contain receiver, transmitter , rx battery and accessory as key, headphones, tubes, cables ect. The CMS receiver and transmitter radio equipment can be used with battery, hand generator or power pack. The rceiver is a regenerative type and use three tubes type 3S4, 2 stages in AF and one in BF. The fequency is 2.5 Mc. to 24.0 Mc. in three bands The transmitter cover the frequency 3.1 – 13.5 Mc. in two bands LOW and HIGH with two different coils in plug. Very interesting to see use two 6V6 tubes for low power hand generator operation and two 6L6 tubes for power pack operation in the same circuit. All other info are welcome .

I m looking for the manual. If you have it please contact me.

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Frequency coverage:
  Rx 2.5 – 24.0 Mc. in three bands
    Band 1 2.5 – 5.7 Mc.
    Band 2 5.7 – 12.0 Mc.
    Band 3 10.0 – 24.0 Mc.
  Tx 3.1 – 6.5 Mc. and 6.9 – 13.5 Mc.
  Crystal controlled
Type of receiver: regenerative
Signals: AM - CW
Rx Tubes: 3 x 3S4
Tx Tubes: 2 x 6V6 for low power or 2 x 6L6 for high power
Output Power: ??? watt
Power supply:
  rx 3 volt filament 45 volt anode with
battery operation
  Tx 6 volt filament 250 volt anode with 6V6 and 425 volt anode with 6L6
Dimensions: Rx 13.8 x 16.3 x 5.5 mm Tx 13.8 x 16.3 x 5.5 mm
Weight: Rx 1.480 Kg Tx 1.540 Kg
Manual:?