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Re: [Amps] AL-82

To: amps <>
Subject: Re: [Amps] AL-82
From: Kim Elmore <>
Date: Mon, 15 Sep 2008 20:46:02 -0500
List-post: <">>
I don't own an AL-82 but I do own an AL-80A that I modified for about 
3800 V idling and about 3600 V full-load Doing this reduced the drive 
requirements a bit and increased the output a bit less than the 
reduction in drive requirements, but the increased output was not 
very impressive. Regadless, I think that any dual 3-500Z running GG 
will need more than 100W drive to reach full output on some bands. 
It's the nature of 3-500Zs in GG operation. That Ameritron runs the 
B+ at 3600 V idling and 3300 V under load will reduce the drive 
requirements a bit, but it still requires a fair bit of smoke in to 
get all the smoke out.

Kim Elmore, N5OP

At 12:23 PM 9/15/2008, you wrote:
>I don't and never have owned an AL-82.   But if I were in the market
>for an amp, that would probably be the one I'd try.   For one thing, I
>like the plate power supply and the B+ it delivers which is I think, a
>respectable 3.6 KV and 3.3 KV under load.   I'd try to find out what
>transformer Ameritron is using now; if no longer Dahl, what?
>I would certainly read the QST review of the AL-82 also.   One thing
>that comes out in the review is that on some bands, the 82 needs a
>pretty good shot of exciter RF to get to 1.5 Kw.   Around 130 watts if
>I remember correctly.  For me, that's not a big deal because I am a
>SSB operator (low duty cycle) and I have a exciter with a 200 w. PA.
>  It might not be a problem for RTTY either because I imagine you'll
>want to run it at 1/2 full output for that mode, but I thought I'd
>mention it in case you were not aware of the amp's drive requirement.
>rob / k5uj

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