6P15 datasheet, cross reference, circuit and application notes in pdf format. Tube Data Sheet ECH84 Polo electronic 107 K7 TC-WR730 ECH81, ECH81, EL95 4p+6p NA29 395U TK245 / TK245U de luxe 4LN40 unbek. 6A7, 6D7, 6D7, 6D6, 75, 43, 25Z5 May 08, 2019 · THE CONVERSION OF EL503 TUBE AMPLIFIERS TO USE THE EL36/6CM5/EL360 FAMILY OF TUBES. The 6CM5-EL36 is a good, low cost choice for an SEPP single-ended push-pull amplifier as it has a low average anode voltage and is capable of passing around mA of anode current. Apart from the horrendous heater power, it probably works as well as a 6V6. This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes.Before the advent of semiconductor devices, thousands of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Tube E 406N or Röhre E406N ID15804, Triode, vacuum, Europe 4-Pin (A, 4A, B4, since 1914) and Power/Output shown. Radio tubes are valves. DO NOT rotate the BIAS control past the point at which the tube strikes as this may cause excessive grid current to flow and may permanently damage the tube. A good tube will strike within the limits given in the settings data. After a tube strikes, its condition is read on the "A" scale of the meter as you would a rectifier tube.