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Occasionally this amplifier will show no grid current with drive
present. As drive is increased the plate voltage drops in a linear
manner. With no RF drive present plate voltage is normal at about
3kv. When operating in this condition the amplifier will show some
output when tuned, typically about 10-20 watts and no more. Prior to
further troubleshooting here does this sound like a familiar issue? The
problem is intermittant in nature.

K6TLA

Tnx for all the help here. I fixed it myself. Been enjoying the
debate on the AL80A thread about the WalMart business model.












--- In ham_amplifiers@..., "liveccam" <liveccam@...>
wrote:

Occasionally this amplifier will show no grid current with drive
present. As drive is increased the plate voltage drops in a linear
manner. With no RF drive present plate voltage is normal at about
3kv. When operating in this condition the amplifier will show some
output when tuned, typically about 10-20 watts and no more. Prior to
further troubleshooting here does this sound like a familiar issue?

The

problem is intermittant in nature.

K6TLA