On May 2, 5:26 am, "Jimmie D" wrote:
a guy has a 6m amp for sale that uses an 811a. in GG configuration. Is this
possible with reasonable gain? The amp appears to be built well and I will
probably buy it just for the parts before the week is out but should I
expect this thing to really work on 6M.

I looked through the QST indices and did not see any sign of an 811A
being used on 6M in a construction article. Doesn't mean it couldn't
be done. There was an article in the Jan '69 QST about modifying the
SB-200 (two 572B's) for 6M that might have worked! The 572B would have
similar parasitics to an 811A but might be a little less fussy... but
two tubes would be harder than one (paralleled capacitance) to get to
load up.

Tim.