We took an AL-811H (the four-tube model) to the Bahamas as one rig of a
multi-two station for ARRL DX CW. We hammered it on 80/20/10 with no
problems for 48 hours.
Now, we did not run it at it's absolute maximum ratings; more like 500-600W
as I recall. At those levels the case temp stayed reasonable with typical
Caribbean temperatures (80 deg F, even in February) and the tubes we not
At 07:07 PM 5/30/2006, Paul Roche wrote:
>I am exploring options for a cheap amp for CW contesting, choices are new
>AL-811 with 572 tubes (about 700 watts out) or an old SB-220 that I have to
>re-tube and provide the "standard mods" to (about 1 KW out).
>Can an AL-811 handle contesting, say for 6 hour stretches at a time? (Family
>reasons prevent more than this). I must stay CHEAP, and the AL-81 DOES cover
>160, but I want a reliable amp for my first one.
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