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Re: [Amps] GU84B tube

To: <Amps@contesting.com>
Subject: Re: [Amps] GU84B tube
From: "Roy" <royanjoy@ncn.net>
Date: Wed, 20 Apr 2011 11:33:28 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
"I'm just gathering information about the GU84B tubes.

I want to build an amplifier with this tube for the HF bands.

I got the tubes, HF parts and other misc. parts.

Will use the G3SEK boards etc.

But who can give me the missing details and/or confirm details regarding the
required voltages so I can look for / buy the proper transformers:"



Vf= 28,4Vac @ 4A

Va  = ??  Vdc

Ia idle for class AB (SSB operation) = ??

Vg2 (screen) = ?? Vdc

Vg1 (grid) = ?? Vdc



Thanks in advance



73's, Evert PA2KW


Evert,

Heater volts=   27.0   ac or dc,   limits=  25.6 to 28.4

Heater amps=   3.7A

Screen volts=  375    (400 max.)

Screen Dissipation=   30 watts

Grid dissipation=  1 watt

Max. plate volts=  2.2 kV      (folks seem to use much more)

Idle current is up to you (cw can use very low)

Let me know other questions.

73,   Roy   K6XK


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