Does anyone know the specs for this Chinese pentode

[Captn Dave]

The tube is an 8 pin Octal labeled 6*4 where the asterisk looks like an X and an I superimposed. It has a 6BD base and a T9 envelope. The only thing I find in a search for those parameters is a 1SA6GT.

 

[DHT112A]

It is a 6ZH4.

U.S. equivalent would be a 6AC7

6Zh4 | Tubes Information

 

[Bone]

This (6ZH4) is more usually written 6J4.

 

[DHT112A]

The 6J4 is a 7 pin triode unless you mean 6J4P

 

[Captn Dave]

Thanks guys.

 

[Mikha]

Diagrams:

''Èñòîê2''. Ðàäèîëàìïû - ïî÷òîé. Ïàðàìåòðû è õàðàêòåðèñòèêè 6Æ4

 

[mace1337]

The 6J4 is a 7 pin triode unless you mean 6J4P

I dont know about this example but the Chinese are known to copy Russian tubes and they drop the "P". For example the Russian 6N1P is the 6N1 in China.

 

[Captn Dave]

Yes that's correct mace1337. As I look now in just the right like I can just barely make out the 6J4P on one of the envelopes. I note that when one presses the google translate button on the characteristics page Mikha posted, the Russian character I had described as an X and I superimposed translates to a ZH as DHT112A had posted. Thanks for the help.