Tube Circuit Gain Calculator

Tubes || AX84 version || RC-22/mu version || RC-22/gm version
This calculator is based on a standard gain equation from the RCA Receiving Tube Manual RC-22: 
transconductance x plate load resistance x plate resistance
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  1,000,000 x (plate load resistance + plate resistance)
Values may be any standard form (68400 or 68.4K, 1M or 1000000, etc.) Check the "Use comma for decimal point" box if you use a comma to designate a decimal point (i.e., opposite the way it's done in the USA).
Use comma for decimal point
Plate resistance : from tube manual or spec sheet
Following grid resistance : grid resistance of following circuit or plate load resistance
Transconductance (in uMHOs) : from tube manual or spec sheet
  
Tubes || AX84 version || RC-22/mu version || RC-22/gm version
Tube Circuit Gain Calculator version 1.1 Copyright 2007 by Miles O'Neal, Round Rock, TX.
Miles O'Neal <meo@XYZZY.rru.com> [remove the "XYZZY." to make things work!] c/o RNN / 1705 Oak Forest Dr / Round Rock, TX / 78681-1514