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2 Meter Endstufen 2G51A
The first 2 meter PA brought the signal of the transceivers to an output power of 250 watts. A 4X150 from Eimac was used as the PA tube.
HG51B
The second generation of the 2 meter PAs delivered the astonishing power of 450 watts pep at that time.
An 8874 (Eimac 3CX400 A7) was used as the tube.
This PA was described in the CQ-DL issue 1-1973.
2G51B: Front view
2G51B: View of the anode circuit.