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#2
25-11-16, 13:13
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Linear
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 .
__________________
1940 cab 11 C8 1940 Morris-Commercial PU 1941 Morris-Commercial CS8 1940 Chev. 15cwt GS Van ( Aust.) 1942-45 Jeep salad 
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#3
25-11-16, 21:19
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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.
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