Скачать или смотреть Unboxing Bentley Acoustic Corp Ltd 6Q7G NR68 CV587 Vacuum Tube

Unboxing a Bentley Acoustic Corporation Ltd 6Q7G NR 68 CV 587 double diode triode vacuum tube. This valve is probably new & was reboxed by Bentley Acoustic Corporation Ltd. The valve base is a black international octal A08 K8A. The valve has a top connection cap. On the bottom of the valve base a letter N is stamped near one of the pins. Printed on the clear glass envelope inside a stop sign is 6Q 7G. Printed around the base socket in burnt orange is the broad up arrow (British Government mark), N R 6 8 & C.V.587. Printed on the the plain white box is DH63 & 6Q7.
The type 6Q7G was first introduced in 1936 & has a heater filament voltage of 6.3 volts.

For more information on this vacuum tube:
http://www.r-type.org/exhib/abw0002.htm (Brimar 6Q77 version)
http://www.r-type.org/exhib/aaa1580.htm (Mullard Amerty 6Q7G version)
http://www.r-type.org/exhib/aaa0073.htm (Tungsram 6Q7G version)
http://www.r-type.org/exhib/aaq0528.htm (6Q7G NR68 CV587 version)
http://www.r-type.org/exhib/zaa0395.htm (CV587 version)
http://www.r-type.org/exhib/aaq0515.htm (M-OV DH63 version)
http://www.r-type.org/exhib/aam0017.htm (MWT Marconi Wireless Telegraphy Co. DH63 version)
http://www.r-type.org/exhib/acg0036.htm (MWT Marconi Wireless Telegraphy Co. DH63 version)
http://www.r-type.org/exhib/aaq0446.htm (Marconi DH63 version)
http://www.r-type.org/exhib/acp0043.htm (Marconi DH63 version)
http://www.r-type.org/exhib/aaa0335.htm (Osram DH63 version)
http://www.r-type.org/exhib/aai0419.htm (Unknown DH63 version)
http://www.r-type.org/exhib/aaq0014.htm (Unknown DH63 version)
https://www.radiomuseum.org/tubes/tub... (6Q7G version)
https://www.radiomuseum.org/tubes/tub... (NR68 version)
https://www.radiomuseum.org/tubes/tub... (CV587 6Q7G version)
https://www.radiomuseum.org/tubes/tub... (DH63 version)
https://www.radiomuseum.org/tubes/tub... (VT92A version)
https://www.radiomuseum.org/tubes/tub... (W1526 version)
https://www.radiomuseum.org/tubes/tub... (VT194 GPO version)
http://www.r-type.org/pdfs/6q7.pdf (RCA 6Q7 6Q7-G 6Q7-GT Datasheet Pdf)
https://frank.pocnet.net/sheets/127/6... (Tung-Sol 6Q7 6Q7G 6Q7GT Datasheet Pdf)
http://www.r-type.org/pdfs/cv587.pdf (CV 587 Datasheet Pdf)
http://www.r-type.org/pdfs/dh63.pdf (Marconi DH63 D63 Datasheet Pdf)

An advert for Bentley Acoustic Corporation in Radio & Electronics Constructor magazine November 1975 shows the 6Q7G as costing £0.50 & the 6Q7GT costing £0.60 VAT included (page 251). Their address at the time was The Old Police Station, Gloucester Road. LITTLEHAMPTON Sussex. PHONE 6743
https://worldradiohistory.com/UK/Radi...

For information on Bentley Acoustic Corporation Ltd
https://www.companysearchesmadesimple...
https://www.gracesguide.co.uk/Bentley...
https://www.radiomuseum.org/dsp_herst...
http://primrosehillhistory.org/?p=1604

For more info on old stores part numbers:
https://frank.pocnet.net/other/Servic...

BVA The British Radio and Valve Manufacturers' Association
https://en.wikipedia.org/wiki/British...

Vacuum tube, thermionic valve, electron tube
https://en.wikipedia.org/wiki/Vacuum_...

Unboxing video of vintage electronic components.To watch more vacuum tube & semiconductor videos please click on the link below
Playlist:    • Unboxing Vintage Electronic  Components In...  
Videoed Wednesday, 9th March 2022 © Mike Fairman 2022 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