[ARC5] ARC-5 on 20 meters

[MICHAEL ST ANGELO]

Good Morning,


I get vintage QSL cards as a Christmas present from my daughter's boyfriend. I like to track down the equipment used.


This year' card as a 1958 QSL form LA7JF in Oslo to KODBK in Kansas. The LA station was using a BC-312G as a receiver and an ARC-5 as the transmitter.


The CW QSL took place on 20 meters CW with a power of 50 watts. I assume this is input power.


Does anyone know of any popular mods of the ARC-5 transmitters for 20 meter operation?


I guess you could put a tripler in a T-20 or a doubler stage in a T-21 or T-22. Did they replace the magic eye tube or crystal with the multiplier stage?


How did they modify the output for 20 meters?


HNY


Mike N2MS
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