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WTB - Blackburn made 6GH8A tubes

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Please dig through your tube stashes for any Blackburn 6GH8A tubes. They are mostly Amperex brand, made by Mullard, Blackburn. I'm willing to buy many if you have them. Or a single. Would really prefer unused NOS. I know a bunch of these have got to be sitting in someone's old TV tube stock, because they were used for that a lot. But they are also the signal tubes for my Dynaco ST-70 Series II, and they are the best sounding of all the 6GH8A's I've tried. I don't want any of the Holland or French made, just the Blackburns. This is your chance to get rid of tubes you will probably never use and make a few bucks. Designation: AAC4, factory code: Bxxx.Thanks.

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Mullard manufactured the 6EA8.
The 6EA8 is a triode pentode. This valve was made by Mullard in the UK for the American distributor IEC and was rebranded as the 6GH8A.

The pentode is of the sharp cut-off type. The design purpose was as a triode oscillator and pentode mixer within VHF TV tuners.

The warm-up time is 11 seconds and this valve would usually be found in a series heater chain.

 
Mullard manufactured the 6EA8.
The 6EA8 is a triode pentode. This valve was made by Mullard in the UK for the American distributor IEC and was rebranded as the 6GH8A.

The pentode is of the sharp cut-off type. The design purpose was as a triode oscillator and pentode mixer within VHF TV tuners.

The warm-up time is 11 seconds and this valve would usually be found in a series heater chain.


Phillips, who owned Mullard, designated the tube in question "AAC", which they assigned to the 6GH8A/ECF80A. This tube was manufactured in three places: Mullard Blackburn, La Radiotechnique Chartres France, and in Holland (not sure which factory).

I can't find a single Blackburn-made 6EA8. I would love it if you could give me more information or some images, or better yet sell me a batch!
 
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