thoriated tungsten 300b tubes

braubeat · 1826

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Offline braubeat

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on: December 21, 2018, 09:18:44 AM
Anybody tried these tubes.

https://www.amazon.com/Shuguang-300b-t-Nature-Matched-Vacuum/dp/B011QVOVL0

They claim to have thoriated tungsten filaments which could be a very good thing.

Much cheaper than the Elrog 300b with thoriated tungsten.

Sadly, I cannot afford them right now but they could be good.

Michael



Offline Doc B.

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Reply #1 on: December 21, 2018, 12:17:08 PM
from the description-

"can withstand the test of Salt"

good enough for me.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline johnsonad

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Reply #2 on: December 21, 2018, 02:33:56 PM
from the description-

"can withstand the test of Salt"

good enough for me.

 ;D

Aaron Johnson


Deke609

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Reply #3 on: December 22, 2018, 01:31:25 AM
"can withstand the test of Salt"

A prized quality for salty dogs who enjoy music on the high seas. "Arrr, matey, now there's a seaworthy tube worth many a doubloon."



Offline Doc B.

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Reply #4 on: December 22, 2018, 05:06:43 AM
I was thinking of salt test that is a little more dry.


Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Paul Birkeland

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Reply #5 on: December 22, 2018, 06:52:00 AM
I would strongly advise against using those until a datasheet is published.

There is a Chinese 845 with an oxide filament that has been for sale for a while, and the filament current required is vastly different than what an 845 would want, so it's a sketchy substitution at best!

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline johnsonad

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Reply #6 on: December 22, 2018, 09:34:29 AM
How does the phrase go? Smoke em if you got em?

They Elrog’s sounded great to my ears but lasted less than a year. I’ll stick to EML and the tried and true EH tubes.  I learned my expensive lesson.

Aaron Johnson


Offline braubeat

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Reply #7 on: December 23, 2018, 08:45:01 AM
Thoriated tungsten DHT's do generally use more current than oxide coated. So that is something to be carefully checked out.

Michael