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GU-81m Amplifier - Alex Kurrasch
http://alexkurrasch.com/amp/amp.html
GU-81m Amplifier. I was amazed when I first saw the GU-81m pentode. This relic of the cold war is about the size of a standard Nalgene bottle, and is rated for 450 watts continuous power dissipation. Yes please, I'll take two ;) Above is a picture …
GU-81M Linear Power amplifier - Ham-amplifiers
https://ham-amplifiers.com/en/power-amplifier-gu-81m
The shortwave power amplifier is made according to the classical scheme by a common cathode on a GUU-81M rectogonal lamp. This is an "old", reliable, time-tested lamp with graphite anodes and does not require forced cooling. With …
Mono & Stereo © 2021: P Audio GU81-M tube amplifier
https://www.monoandstereo.com/2019/07/p-audio-gu81-m-tube-amplifier.html
Mono & Stereo High-End Audio Magazine: Magico - Nagra - Tidal Audio - Wilson Audio - MSB - Totaldac - Living Voice - Taiko Audio - Aries Cerat -Thrax
GU81M / GU-81M / GU81 / GU-81 / GU80 / GU-80
https://www.zeitmann-tubes.com/MilitarySurplus/NosRussianMilitaryTubes/GU81M.htm
We have GU81M , GU-81M , GU81 , GU-81 , GU80 , GU-80 Military Russian vacuum tubes. Made by Ryazan Plant of Electronics, Ryazan. Packing : OEM. ... drivers and linear power amplifiers, too. It is a ruggedised military transmitting pentode up to 600 W output power, with good parameters, as follows : Ua= 3000 V (max. 6 MHz),
GU-81m tube amp schematics??? | Page 8 | diyAudio
https://www.diyaudio.com/community/threads/gu-81m-tube-amp-schematics.183163/page-8
Schematic of my 1500W GU81 power amp Hi Folks, here are the drawing of my 1500W amp with 2x GU81 in the final. The Power supply is not shown. It need several heater voltages due to Vf/k . Input/Voltage amp 1000V+ (E80F / 2x EL803= Driver 600V+ (EL34)-Vg1 280V-Vg2 600V+ (from HT power unit) Output plate 2700V+ (2x GU81)
Vostok - 1.5 KW HF linear amplifier using GU-81M ( GU81 ...
https://www.golectures.com/index.php?go=search&q=Vostok%20-%201.5%20KW%20HF%20linear%20amplifier%20using%20GU-81M%20%28%20GU81%20GU81M%20%D0%93%D0%A381%20%D0%93%D0%A3-81%D0%9C%20%D0%93%D0%A381%D0%9C%29%20tube%20-%20by%20YO6PMX
Vostok - 1.5 KW HF linear amplifier using GU-81M ( GU81 GU81M ГУ81 ГУ-81М ГУ81М) tube - by YO6PMX. x. GU81M HF Linear Amplifier: Close-Up 32:49. Homebrew HF linear amp using two GU81M tubes. Also close up of the HV supply ... Building A 1.3 KW Audio Hi-Power Amplifier Using Eimac 3-400Z Part 4 of 4
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