It is obviously a prewar British DHT.
Same balloon shape like the first PX25, except 1/4 inch higher and
heavier.(DET5 150gr. PX25 97gr.)
An equivalent is probably CV0384.

Does anybody have info about this tube/valve?
Is it good in a SEDHT amp?
Will it do the same job as a PX25?

All info are appreciated.

John

"John" wrote in news:RvAFd.9163$HA5.1085069
@juliett.dax.net:

It is obviously a prewar British DHT.
Same balloon shape like the first PX25, except 1/4 inch higher and
heavier.(DET5 150gr. PX25 97gr.)
An equivalent is probably CV0384.

Does anybody have info about this tube/valve?
Is it good in a SEDHT amp?
Will it do the same job as a PX25?

All info are appreciated.

John

Just been through a bunch of these critters and found some that are dual
marked NT40/DET5 and NT40/PX25 (but none DET5/PX25) but i think its safe
to assume DET5 = PX25. BTW in a hodgepodge of 30 pcs, the lightest was
69g, the heaviest 110g, and the DET5s were the heaviest.
FWIW
M

John,

PX-25 =LK4200
DET5 = LK4200
CV384 = DET5
NT40 = DET5

This is all according to my Max Funke tube test book. The majority of tube
types were made either by Marconi Osram or Valvo. It looks to me that they
are all the same tube.

Carroll
"John" wrote in message
...
It is obviously a prewar British DHT.
Same balloon shape like the first PX25, except 1/4 inch higher and
heavier.(DET5 150gr. PX25 97gr.)
An equivalent is probably CV0384.

Does anybody have info about this tube/valve?
Is it good in a SEDHT amp?
Will it do the same job as a PX25?

All info are appreciated.

John