>Hi gang, I've got a half dozen 4-400A's that I would like to test. Is it
>possible to run these in a SB-220 without many mods? Or should I wait til
>July 4 and just drop 'em in and see what happens? Tnx Bill, K2HV
To use 4-400As in a SB-220, put a 2 to10 ohm 2w resistor between pin 3
and pin 4 (grid-screen). Short the zener bias diode with a jumper. The
ZSAC will be a bit low for SSB, but they will work ok. 4-400s like to
see at least 3500v.
cheers
Rich...
R. L. Measures, 805-386-3734, AG6K
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