[Amps] Need some amplifier advice
Carl
km1h at jeremy.qozzy.com
Fri Jun 28 10:59:11 EDT 2019
----- Original Message -----
From: "Jim Thomson" <jim.thom at telus.net>
To: "Carl" <km1h at jeremy.qozzy.com>; <amps at contesting.com>
Sent: Friday, June 28, 2019 1:34 AM
Subject: Re: [Amps] Need some amplifier advice
>
> <Id suggest 3B28's in placeof 866A's however, a direct swap.
>
> <Carl
>
> ## are 3b28 and 866s still available ? How long will the filaments in
> them last ?
Forever for 3B28's has been my experience so far and they are readily
available nor do they flash over like 866A's.
> I only have experience with 816s and 866s... mid 70s era. Worked good
> at the time.
>
> ## Then I discovered 1N5408s. Then 6A10s. 10A10s and 10A07s are
> both 10 A rated.
> The 10A07 is 600A surge rated.
>
> ## IF the tube rectifiers are still available, and plentiful... go for
> it. And if sources eventually dry up,
> then a swap to SS rectifiers is straightforward.
>
> Jim VE7RF
Direct SS plug in replacements are still everywhere as so many were produced
for broadcast, military, and other electronics as the 1N2367 and a few other
numbers. I used a pair a few years ago in a Bauer 707 BC TX I maintain.
Carl
>
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