[Heathkit] sb200

[WA3GIN in Alex. City, VA]

Check your tuned input coil for the band you're usingand insure that the
circuit is peaked.  Also check the filament feed capacitor, the solder
connections on the pins of the tube socket. Check the grabbers on the tube
socket to ensure they are making a good connection to the filaments of the
tubes. Check you watt meter and check you dummy load.

73,
dave
wa3gin


-----Original Message-----
From: heathkit-bounces at mailman.qth.net
[mailto:heathkit-bounces at mailman.qth.net] On Behalf Of ted
Sent: Friday, August 18, 2006 8:16 PM
To: Heathkit at mailman.qth.net
Subject: [Heathkit] sb200

Still cant get full output from amp.Plate voltage near 2400.Have   -123
volts at grid.I replaced the 20uf and 2uf ,both rated 150 volts. Output abt
375watts.I noticed tubes can get red if keying a little prolong.Only thing I
havent done is install 2 new tubes.Tried used spares. I just feel something
else is wrong.When I key amp grid voltage drops to say -54 volts.If anyone
can help with some idea ,greatly appreciated.Ted
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