All content on this page is 19972019 duncan amplification. Apparently is the russian equivalent of the wwii era german wehrmacht rl2 4p6 rf oscillator transmitting amplifier tube. Please see the substitutes at the top of the page for more details. Russian and chinese tube substitutes brent jessees. Tube 3v4 or rohre 3v4 id2119, vacuum pentode, miniatur7pinbase b7g, usa 1940 and. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Information on a jackson 648 tube tester antique radio. Two flasks p and q contain an ideal gas and are connected with a tube of negligible volume compared to that of the flasks.
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