"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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