200 to 250 watts AM results in 800 to 1000 watts PEP at 100% modulation. Three
811 tubes can not handle that power. However if you are using low level AM
from your xcvr you probably won't get 100% modulation so it might not be a
problem. If it were me, I would drop the power to 150 watts to be safe
Just my opinion
George, W6GF
On Friday, August 1, 2014 4:57 PM, Robert <rmcgraw@blomand.net> wrote:
Yes. Run about 200 to 250 watts of carrier BUT tune it for max output with 100
watts of drive. Then switch to AM mode and adjust drive as necessary. Do not
change amp tuning after switching to AM mode.
73
BOB, K4TAX
Sent from my iPhone
> On Aug 1, 2014, at 5:40 PM, Timothy Johnston <timothy.f.johnston@gmail.com>
> wrote:
>
> Can the Centurion (422b) be used with AM mode? The manual does not mention
> it.
>
> 73 de Tj, K4TFJ ...
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