Those spec sheets have been around for decades BUT:
Has anyone ever seen an O'Malley?
The Svetlana was not a true 572B clone, the anode was smaller and the plate
dissipation lower. It did not work well in some amps due to instability, not
a problem if you knew how to tame them. I ran pairs in several SB-200 6M
conversions with no problems at 600W.
Pulled off the market years ago as well as their make believe 811A which was
a relabled Ryazan G-811 (their logo still visible under the new paint) which
dates back to WW2 when a B-29 crash landed in the Far East after bombing Jap
locations. They copied the plane as a TU-4, the ART-13 TX which used 811
modulators and seriously updated versions are still flying aka the "Bear"
nuclear capable heavy bomber.
Carl
Message -----
From: "Aleksandar Petkovic" <vk6apk@bigpond.com>
To: <amps@contesting.com>
Sent: Friday, August 20, 2021 12:30 AM
Subject: Re: [Amps] 572B/T160L tube class C
Try
https://frank.pocnet.net/sheets/084/5/572B.pdf
Or
https://frank.pocnet.net/sheets/164/5/572B.pdf
73, Alek, VK6APK
On 20/08/2021 8:56 am, Fuqua, William L. wrote:
I am looking for full power data for the 572B/T160L operating ICAS
class-c CW and AM.
The only thing I have found thus far is in an ARRL handbook, but it is
obviously the 811A specs.
Not the full 160W plate dissipation specs.
73
Bill wa4lav
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