Anybody try Euro DHTs like RE134, RE304 etc??

[andyjevans]

I've noticed the European DHTs fetching large money on ebay - maybe because there are radio sets that require them.

But for the ordinary constructor, has anyone tried the following:

#RE034
Filaments: 4v at 0.065A
Base:
Max Va 200v
Watts
S 1.2
Ra 9.1k
Mu 25

#RE074 neutro
Filaments: 4v at 0.065A
Base:
Max Va 120v
Watts
S 1.1
Ra 9.1k
Mu 10

#RE084, #A410
Filaments: 4v at 85mA
Base:
Max Va 150v
Watts
S 2
Ra 8k
Mu 16


#RE134
Filaments: 4v at 150mA
Base:
Max Va 200v
Watts 3w
S 2
Ra 5k
Mu 10

#RE304
Filaments: 4v at 300mA
Base:
Max Va 200v
Watts 6w
S 2
Ra 2.5k
Mu 5

#RE604
Filaments: 4v at 650mA
Base:
Max Va 200v
Watts 12w
S 3.5
Ra 1k
Mu 3.5


#RS241
Filaments: 4v at 0.6A
Base:
Max Va 400v
Watts 15w
S 3.5
Ra 4.9k
Mu 17

#KC1
Filaments: 2v at 65mA
Base: P
Max Va 150v
Watts 0.5w
S 0.6
Ra 40k
Mu 24


#KC3
Filaments: 2v at 210mA
Base: P
Max Va 150v
Watts 1w
S 2.5
Ra 12k
Mu 25

any views of interest!

Andy Evans

 

[kevinkr]

I've got some AA types and plan on getting some BA/BAS types as well to experiment with. These are German Post Office dhts and are still relatively reasonably priced compared to RE series stuff..

Valvo, Siemens and RFT all made AA, BA, and BAS types.

 

[andyjevans]

Hi Kevin,

Have you listened to these in equipment?

Quite high Rp for Aa and Ba - 25k to 30k.

Cool looks, but odd bases.

andy

 

[kevinkr]

Hi Kevin,

Have you listened to these in equipment?

Quite high Rp for Aa and Ba - 25k to 30k.

Cool looks, but odd bases.

andy

Hi Andy,
I haven't yet listened to any of these types or even powered them up on the bench. Yes, I am aware of the high Rp which precludes their use with transformers unfortunately, so I would probably use them in a dissimilar mu follower configuration because of that issue. They are quite popular in Germany and haven't become hideously expensive yet, although the Siemens made ones are not particularly inexpensive. I have a pair of the funky sockets these require as well.

Just something else to play with.. 😀 I might try something during my 2 week Christmas furlough..