Wireless of the Week - week 41

[cletrac (RIP)]

And there's this thread on the handcart.

[Mike K]

I did have 3 or 4 of those UK 22 sets .

The major problem with them is these days: the very poor low quality insulation used on the point to point wires. They tried a cheap rubber compound of some type, it may have been an experiment for moisture proofing in tropical environments, but the insulation just falls off, leaving a bare wire !


The Aust. 22 and 122 , 1944 and 45 . The manufacturer of these obtained and used the then new wonder ? PVC coated wires . PVC and its derivatives are excellent for this application, the stuff will last for 200 years or more

[Bruce MacMillan]

The increased production of vehicles needing wireless put a huge demand on 19 sets. Decisions were made on the supply of 22 sets where they could be utilized. Canada ordered 1362 sets from the UK for use with the CAOS.

A further 80 sets were ordered to be shipped back to Canada for training purposes. There's a good chance that 22 sets found in Canada may be from this batch.

The policy of introducing 22 sets was also followed by the British.

[Tim Bell]

Would be great if anyone has a picture of the High Power Amp produced for the WS22 by Capt Astbury of Phantom GHQ Liaison Regt in 1944.

[Mike K]

Post WW2 , there were some numbers of 19 set linear amps converted for use with the 122 Aust. set. I did have one of these, I gave it to VK3CYD who is currently working on it. Two of the 807's were removed , cannot remember the other details .

[Chris Suslowicz]

The four 807 version of the RF Amplifier was the MK.1 and extremely inefficient, so the design was re-worked to improve things. (Adding a cooling fan to the dynamotor and reducing the 807s to two, with corresponding circuit changes resulted in a rather more usable unit that could be operated continuously instead of a maximum of 15 minutes per hour.) I believe the WS22 amplifiers were conversions of the Amplifier, RF, No.2 Mk.3, with the addition of a meter for aerial current (using the existing metering boxes) and so on.

Chris.