[Amps] Help with ARRL handbook design 4CX1000A 2m PA

[Roger (K8RI)]

Pete Lindsay wrote:
> Hi Guys,
>
> I have a 2m PA built around the design in the 1986 ARRL handbook
> chapter 31 using a 4CX1000A. It was built by a friend to a very high
> spec and looks like an exact copy of the original design. The problem
> is it has never really worked that well. The problem lies in the
> output efficiency which, at best, is only around 30-35%. I am using
>   

What's the bias? Is it running class A?

73

Roger (K8RI)