The 572B was originally the Taylor T160L but Taylor was on the way out and
Cetron took over. There are several conflicting stories of the business
Since AM was in a steep decline Cetron shopped the tube for RF use,
capturing Heathkit, Dentron and Hunter as early OEM's; others followed
including Yaseu. It was private labled for Hunter. Im sure some OT's
remember the Hunter Bandit 2000?
Since it has been around for 45 years or so I'd say it has enjoyed a long
and popular life in RF service and more recently as an output tube for
----- Original Message -----
From: "Peter Chadwick" <email@example.com>
To: "c s" <firstname.lastname@example.org>; <email@example.com>
Sent: Tuesday, July 03, 2007 5:52 AM
Subject: Re: [Amps] tubes??
> The earliest mention I can find of 572Bs existing is in the 1962 ARRL
> Handbook, and for some time, the only manufacturer appeared to be Cetron.
> In that Handbook, the listings for it are as Class B push pull modulator,
> which makes sense, as it isn't really built as an RF tube. It seems that
> some Cetron tubes were rebranded by other tube manufacturers (not an
> uncommon arrangement), but it's relatively recently that the Taylor name
> has been resurrected in China. I wonder if anyone will ever try
> resurrecting Heinz and Kaufman's 'Gammatron' brand?
> Peter G3RZP
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