I have an article from 73 back in the mid-60's about changing over from
811A's to 572-B's. I will snail-mail to you, Javier.
Joe W4AAB
----- Original Message -----
From: <w4oae@comcast.net>
To: Vic Rosenthal <vic@rakefet.com>; Javier Remoto
<jlopez@plasticosomega.com>
Cc: <amps@contesting.com>
Sent: Sunday, September 19, 2004 12:29 PM
Subject: Re: [Amps] Collins 30L-1 / 572's B
> There is an up side to going to the 572b. It is a common
> practice in the 30L-1 without any problems that I know of.
>
> Seeing how the 572b is a stronger tube it would last a lot longer
> at higher drive levels. Being more expensive is a consideration.
>
> I suppose it's a 50/50 call. If you can find a set of 572b's at a
> good price I would go for it.
>
> 73 Sam W4OAE
>
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