>
>
>
>> From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]
>> On Behalf Of Tom Rauch
>>
>> 572B's are a good mod to the 811 amp, they make it almost bullet
>> proof. It is a cheap way to pick up the most power gain per buck. If
>> your signal is marginal, the first few hundred watts more makes the
>> biggest difference.
>>
>
>Tom,
>
>Does the AL-811 have provision for raising the plate voltage by 800
>to 900 volts to be more compatible with the 572B? As I recall an 811
>generally operate at 1200 - 1400 volts where the 572B likes about 2200
>volts ... at 1400 volts the 572B is not much more than a rugged 811.
>
? Good points, Joe. The 572B and the 811A have the same peak cathode
emission, Mu, freq rating, and driving Z. The difference is in max
allowed anode dissipation and anode supply V.
cheers
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
end
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