[Amps] AL-572

[2]

>I may have to stand corrected here....
>
>My personal experience is limited to the Svetlana brand mounted in an
>FL-2000B, which, even with the Svetlana mod, was a less than satisfactory
>experience. I was never able to get more than 300W on 10m, and the one time
>I really tried to tickle more than than out of the beast, it cost me an
>almighty bang and two broken tubes! 

Peter -- Did the tungsten filament wires break inside the envelopes?

>I have now modified the amp to use a
>single QB4/1100 (or QB3.5/750) which is a tetrode very similar to the 500Z,
>in GG service. The amp will now deliver more than 650W on 80m and ~550W on
>10m, in addition to being a lot easier to tune. See full story on my
>homepage!
>
>I have heard the same experience from other users of amp with the 572B
>(mostly SB-2xx), but, as stated above, I'm willing to yeild to higher
>expertise.
>
>Vy 73 de OZ1PIF, Peter
>
>**********  OZ1PIF **************
>email: oz1pif(no-spam-filler)@get2net.dk
>http://hjem.get2net.dk/oz1pif
>Ph. +45 4619 3239
>Snailmail:
>Peter Frenning
>Ternevej 23
>DK-4130 Viby Sj.
>Denmark
>***********************************
>----- Original Message -----
>From: <MorgusMagnificen@aol.com>
>To: <oz1pif@get2net.dk>; <amps@contesting.com>
>Sent: Saturday, January 04, 2003 2:14 AM
>Subject: Re: [Amps] AL-572
>
>
>> Your comments about the 572 do not seem correct. What is the basis for
>your
>> belief that they are inferior at 30MHZ?
>>
>> I have used 4 572's in my amplifier for several years, using virtually all
>> known species, including the overrated and overpriced SV572. I have no
>> problem getting full KW out on all bands - except when the line voltage
>gets
>> low out here in the country. With only 95 VAC coming in, even if I had one
>of
>> those tetrodes with handles  I am reduced to a Mississippi kilowatt (I
>better
>> get running - I can hear them coming down the street now!)
>>
>> Eric von Valtier K8LV
>>
>>
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>
>
>
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-  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, 
www.vcnet.com/measures.  
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