Wireless Sets overview part 2

Wireless Set 21

The WS 21 is a low power transmitter-receiver for short range R/T and CW communications in infantry brigades and Royal Artillery regiments and is intended to perform similar duties to the WS 11 LP. A combined sender and receiver in one pressel steel case controlled by a separate unit which fits into the front of the set.

Year of issue 1940 Purpose GP Inf Bde, RA Regt Truck/Ground station Frequency 4.2 - 7.5 Mhz 19 - 31 Mhz Range (miles) CW 8, R/T 5 CW 2, R/T 1 Power output (watt) CW 1.5 CW 0.8 Transport Truck, pack Remarks

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Wireless Set 22

The WS 22 is a 13 valve medium powered sender/receiver, similar design and operation to the WS 19, but providing facilities of the WS 11 HP and stations. The frequency range is covered in 2 bands.

See also our handcart wireless, with WS-22

Year of issue 1942 Purpose GP Bde, Div Truck/ground station Frequency 2-8 MHz Range (miles) CW 15, R/T 10 Power output (watt) CW 1.5, R/T 1 Transport Truck, man-pack, animal pack Remarks

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Wireless Set 22 Australian

As activities escalated in New Guinea in 1942, The Wireless Sets No.101 and 109 were probably proving unsatisfactory due to the lack of tropic proofing, excessive weight, lack of portability, limited frequency range and in the case of the No.101 insufficient output power. The No.11 (Aust.) was still undergoing conversion design, but would not meet all of the requirements, even when in production, due to excessive weight, lack of portability and limited frequency range. The British No.22 met all of the requirements, except for adequate tropic proofing, and in December 1942 the decision was taken to produce the No.22 (Aust.) based on the British No.22, but was to become Australia's, and possibly the world's, first fully tropic sealed set. As an interim, the No.22 Yellow Band was produced by Radio Corporation in 1943, closely resembling the British No.22, but using readily available components. Radio Corporation commenced production of the No.22 (Aust.) in March 1944. Although the No.22 (Aust.) included facilities for incorporating two crystal locked frequencies, it was not until the production of the No.122 (Aust.) commenced in about mid 1945 that the facility was incorporated in the updated set. The No.22 (Aust.) and No.122 (Aust.) remained in service until 1952 or 1953 when both sets were rebuilt in to the No.122 (Aust.) Mk.2 version.
Ranges from 3 to 5 miles in jungle using a 12 ft. vertical aerial on voice (a.m.), to 60 to 70 miles in open ground using a 1/4 wave wire aerial on morse (c.w.) could be achieved.
Power source, external vibrator power supply requiring a 12 volt lead-acid battery. Frequency coverage, 2 to 8 Mc/s in two switched bands. Power output, high power, 3.5 to 4 watts on voice and m.c.w., 6 to 7 watts on c.w., low power, approximately 25% of high power. Modes, voice (a.m.) and morse (c.w. and m.c.w.). The receiver is of a 7 valve superhetrodyne design with an intermediate frequency (IF) of 455 Kc/s. Total number of valves, 10 shared between the transmitter and the receiver. The output valve is the ubiquitous 807.

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Wireless Set 22 Yellow Band

Australian versions of the No.22, using locally available valves, 807 output, yellow band to identify!. Radio Corp.

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Wireless Set 23

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Wireless Set 24

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Wireless Set 26

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Wireless Set 27

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Wireless Set 27 Canadian

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Wireless Set 28

Superseded by WS 18.

Year of issue 1940 Purpose Infantry Coy Battn HQ Frequency 6-9 MHz Range (miles) CW 5-8, R/T3-5 Power output (watt) CW 0.25 Transport Man pack Remarks Alternative to 18set, abandoned

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Wireless Set 29 Canadian

Year of issue 1945 Purpose GP AFV Truck/ground station Frequency 2-8 MHz, 235/245 MHz Range (miles) CW 40, R/T 25, 0.6 Power output (watt) CW 25 (HP), R/T 25, 1 Transport AFV, Truck Remarks Canadian design, replacing WS19 HP

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Wireless Set 31

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Wireless Set 31 HP

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Wireless Set 31AFV

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Wireless Set 32

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Wireless Set 33

The WS 33 is a medium/high power sender similar in design and facilities to the WS 12, but with increased range. A separate receiver must be used, generally the reception set R 107. The WS 33 is the standard equipment for "medium wireless section" and several other special purposes. It may be used as a ground or mobile station.

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Wireless Set 34

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Wireless Set 36

WS 36 WS 36 Mk II Year of issue 1941 1941 Purpose AA Defence communication AA Defence communication Frequency 10-60 MHz 10-40 MHz Range (miles) R/T 25 R/T 25 Power output (watt) CW 25, R/T 25 CW 25, R/T 25 Transport stationary stationary Remarks

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Wireless Set 37

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Wireless Set 38

The WS 38 is a man carried set designed for use by assault troops and is a complete send/receive station with a range of approximately 5 miles. It is carried in a web case designed to fit alongside the respirator as worn in battle order. Weight of the set with aerial case and satchel signals complete with receivers and microphones is 24 lbs. approx. The WS 38 "hooks brace" enable the set to be fastened to the soldier's webbing. On the Mk I a "bulb 2V W.F." is fitted on the top of the wireless set to give indication of the strength of the battery.

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Wireless Set 38 AFV

Early AFV with control unit No12

Later version.

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