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
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
andyjevans said: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..
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