No, stay away from 811 type tubes for Contest use
Best deal in same power output range is
$500 to $600 used price in U.S.A.
Single 3-500Z tube ( 500 to 600 W Out Key Down)
Possible weakness is bandswitch so do not HOT SWITCH
or operate into High VSWR if at all possible
( I never personally zapped an AL-80A bandswitch but know of a few)
The AL-80B went to electronic bias - had some related problems
with the bias circuit but supposedly a mod available -
otherwise basically same amplifier as AL-80A but much more costly used
We used AL-80A amps for expeditions to Mexico and have used in Grand
73, Dennis N6KI / TEAM 6E2T / ZF2AR
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