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Last modified 2025-12-19

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Wireless set No.18 Mark I, II and III (UK, WWII)

A picture of Wireless set No.18 Mark I, II and III (UK, WWII)

SPECIFICATIONS

GENERAL
Type:Military HF transceiver
Frequency range:6-9 MHz
Tuning steps:Analog / continuous
Frequency stability:Max ? ppm
Mode:AM (Mark I)
AM / CW (Mark II and III)
Channels / memory management:None
Duplex shift / offset:No
Power supply:6 VDC "Battle battery" (Vibrator supply)
or hand crank generator
Current drain / power consumption:RX: ? mA
TX: ? A
Antenna impedance / connector:Hi-Z / Threads (For whip antenna)
Dimensions (W*H*D):254*432*203 mm (10*17*8")
Weight:15.4 Kg (34 lb), complete equipment, ready to go
Other features:




RECEIVER SECTION
Receiver system: Single conversion superheterodyne
IF: 465 KHz
Sensitivity:
Squelch sensitivity:
Selectivity:7 KHz (No dB reference)
Image rejection:
AF output power / speaker:? mW at ?% distortion / ? ohm
External speaker connector:




TRANSMITTER SECTION
RF output power:250 mW
Modulation system:
Max FM deviation (Factory set):No FM
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / ?-pin
Microphone input level:? mV




MISCELLANEOUS
Manufactured:UK (By PYE Ltd), 1940-1945 (Discontinued)
Additional info:
Related documents:
Modifications and fixes:
Reviews:
Options / Accessories:
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