[Amps] Plate RF choke

rick darwicki n6pe at yahoo.com
Sat Jan 26 13:21:32 EST 2013

Hi all,
I continue to have problems with limited space for an Ameritron RFC in my Alpha 76. It arcs to the old style long capacitor.
Working on an old HT-41 I noticed it has a smaller diameter multi-pi layer RFC with sort of twisted wiring in the layers. I haven't measured it yet but I assume it would'nt have much self resonance in the ham or WARC bands. It appears to be more than the 190uh or so I might need for the Alpha. The HT-41 was rated at about 500ma max plate current.
Considering swapping the RFC's but worried about the current, any comments?
Also, the Alpha is a 3 holer and could draw as much as 1200 ma. I can rewind a burned Ameritron choke and get the self resonances further away from operating points. Question is what is the minimum size wire I should use in the choke. I know it isn't the DC current listed in wire tables, but have no idea how small I can go.

Rick, N6PE
 Talk is cheap... except when Congress does it.

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