Re: [Amps] AL-82 opinions

["Carl" <km1h@jeremy.mv.com>]

The AL-82 uses a pair of 3-500Z's and 1500W is a strain on them if long term 
reliability is wanted.
Carl
KM1H


----- Original Message ----- 
From: "Bill Turner" <dezrat1242@yahoo.com>
To: "Amps" <amps@contesting.com>
Sent: Wednesday, November 06, 2013 4:46 PM
Subject: Re: [Amps] AL-82 opinions


> ORIGINAL MESSAGE:          (may be snipped)
>
> On Wed, 06 Nov 2013 16:11:40 -0500, Pete wrote:
>
> > Is the power supply adequate for 1500W CW in contest service?
> REPLY:
>
> Yes on CW, but don't run full power on RTTY. Mine smoked the tank coil
> twice, once on 80 and once on 160. I asked the designer, W8JI, about it 
> and
> his reply was "Who runs RTTY on 160 meters?"  Well, me for one.   :-)
>
> It was the polystyrene support rods on the coils that melted. As I recall,
> the higher bands don't use that kind of coil and there was no problem 
> there.
> If you really want the AL-82 you might consider cutting a hole in the side
> and mounting a fan to cool the tank coils. That would void the warranty of
> course.
>
> Also, of all the amps I ever owned, the only one that ever blew a tube was
> my AL-82. Fortunately, Ameritron replaced it under warranty. That is a 
> very
> expensive tube if you have to replace it yourself. If I were going to buy 
> an
> Ameritron I'd get the one with two 3-500z's. Much cheaper to replace.
>
> 73, Bill W6WRT
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