Скачать или смотреть Unboxing Two Osram DH101 Double Diode Triode Vacuum Tubes

Unboxing two Osram DH101 double diode triode vacuum tubes. These valves are probably new & in their original boxes. (NOS New Old Stock, NIB New In Box) These valves are identical & the description below is for both valves.
The valve base is a loctal-8, B8G B8B. The valve has no top connection cap. The clear glass envelope has a label with Osram, BVA. & MADE IN ENGLAND UNDER BRITISH PATENTS. Printed on the glass inside a rectangle is DH101, DK & 3. The DH 101 has a heater filament voltage requirement of 19 volts.
The one end of the box has Osram VALVE, the BVA logo, DH101, 12/-. & PURCHASE TAX EXTRA. Printed on the inside flap is "This valve has been thoroughly tested before leaving the Works, and no responsibility can be accepted for valves used at other than the published ratings." The other end of the box has Osram Valve. The inner flaps have printed "MADE AT THE WORKS OF THE M.O. VALVE CO LTD. UNDER VARIOUS BRITISH LETTERS PATENT" & "E S & A ROBINSON LTD BRISTOL FOLDING BOX MAKERS O/N G 11341" & "BT3A". The second valve box the order number is G11341 (no space between the G & 11341)

In the November 1960 edition of Practical Television magazine the Bentley Acoustic Corporation Ltd are advertising the DH101 for 28/6. A huge price increase from the 12/ shown on these boxes.
Not related to these valves but another interesting article in the magazine is an advert for the Gramdeck Gramophone Tape Recorder, turns any gramophone into a first-class Tape-Recorder!
https://www.americanradiohistory.com/...

For more information on this valve:
https://www.radiomuseum.org/tubes/tub...

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

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

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

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Videoed on Sunday, 26th April 2020 © Mike Fairman 2020 Worcester

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Unboxing Vintage Electronic Components