I wouldn't bother. As I recall the 813 started losing RF output about 20
mhz or so.

You could try it, just reduce the plate voltage a bit. But I think the
efficiency will be quite low. And it may be tough to neutralize.

Dan/W4NTI

"David McBeth" wrote in message
...
Can the 813 be used at reduced ratings on 50mhz? How?

David ZL2DG