Hi all
Possibly high RF current on the plate RFC
- meaning it has a hole on 50 MHz.
I have burnt a plate RFC in my 6m RF deck
because of parasitic oscillation around 60 MHz.
But 8877 must be quite stable without neutralization.
I recommend the plate RFC described on 1996 ARRL
handbook's 2kW PEP amp for 50 MHz:
36 turns #24 enam. wire on a 1-inch dia Teflon rod.
Also, A 6-meter kilowatt amp using the Svetlana
4CX1600B on 2007 ARRL handbook:
40 turns #20, 1/2 dia, close-wound
I am using 40 turns 1.5 mm enam. on 20 mm dia
Teflon rod, close-wound.
de Han JE1BMJ
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