Unboxing Rediffusion EL85 RF Power Output Pentode Vacuum Tube скачать в хорошем качестве

Unboxing Rediffusion EL85 RF Power Output Pentode Vacuum Tube

Unboxing a Rediffusion EL 85 power output pentode vacuum tube. This valve is probably new & in its original box. The valve base is a Noval 9 pin, USA pico-9, B9A miniature 9 pin. The clear glass envelope has the Rediffusion logo & EL85 printed on it in white. rW2 & B2A3 date &/or manufacturing codes are visible on the valve. My knowledge & understanding of these codes is very limited but my best guess would be rW is the code for EL85 & 6BN5. tR2 EF89 version 2 or the year of manufacture ?. Philips Factory Codes; https://frank.pocnet.net/other/Philip... The green box has the Rediffusion logo & EL85 printed on one end. I have other Rediffusion valves in my collection which have "REDIFFUSION PEC" & "PEC REDIFFUSION" printed on the valves & boxes. I do not know what the PEC stands for. I was wondering if it was used by Rediffusion to denote their use of Russian made valves. The type EL 85 was first introduced in 1954 for use in mobile transmitters and receivers. The EF89 has a heater filament voltage requirement of 6.3 volts. For more information on this valve: http://www.r-type.org/exhib/aaa0226.htm (Mullard EL85 version) http://www.r-type.org/exhib/aaa1644.htm (Mullard EL85 version) http://www.r-type.org/exhib/aai0278.htm (CV3526 version) http://www.r-type.org/exhib/acl0146.htm (GPO CV3526 version) https://www.radiomuseum.org/tubes/tub... (Mullard EL85 version) https://www.radiomuseum.org/tubes/tub... (Haltron 6BN5 version) Information on Rediffusion http://www.rediffusion.info/ https://en.wikipedia.org/wiki/Rediffu... https://hackaday.com/2018/08/10/redif... For information on CV "Common Valve" part numbers: https://www.valvecollector.uk/cv-valv... For more information on old stores part numbers: https://frank.pocnet.net/other/Servic... Vacuum tube, thermionic valve, electron tube https://en.wikipedia.org/wiki/Vacuum_... To watch more vacuum tube videos please click on the link below Playlist:    • Unboxing Vintage Electronic  Components In...   Videoed on Wednesday 30th December 2020 © Mike Fairman 2020 Worcester Thank you for watching. If you would like to buy me a drink or make a donation to my channel please click on the link below https://www.paypal.me/MikeFairman Thank you for your kindness & generosity. #UnboxingVintageElectronicComponents Unboxing Vintage Electronic Components