Generator pentode ГУ-81М with a directly heated tungsten carbide cathode in a glass shell and air cooling.
Designed to amplify the power and generate high-frequency oscillations at frequencies up to 50 MHz with an output power of at least 700 W.
The ГУ-81M pentode is used in transmitters, high-power stages of low-frequency amplifiers and in other radio engineering devices of stationary equipment for general and special purposes.
Produced in glass version.
Cathode tungsten thoriated carbide direct heating.
Socle special with 6 conclusions.
Working position vertical, a socle down.
Cooling air is natural or forced.
Overall dimensions of the ГУ-81M pentode:
– lamp height – 260 mm;
– lamp diameter – 120 mm.
Operating time not less than 1000 hours
Deciphering the pentode marking:
ГУ – a letter that determines the type of lamp: GU – generator lamps with a generation frequency of 30 to 300 MHz;
81 – the number of the serial number of the development of this type of lamp;
M – modification index.