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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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8th May 2017, 3:10 pm
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#1 |
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Pentode
Join Date: Mar 2016
Location: Champaign, Illinois, USA.
Posts: 227
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Very old valves, where to get sent to US?
I just got a Marconi 702, which worked a decade or more, on your side of the Pond.
A couple of valves look somewhat iffy, loose bases. I'm told by ourexpert on these things (has a 702, not tested, and a working 705, and also the corresponding HMVs) thatI should order up and keep one of each type. But I have no idea where to get them ... the forums over here have a "sticky" thread with such info. If it's not a prohibited subject, are there "standard" places to "go to" for them, that will ship to the US? If so where? It would be nice to get all of them in one shipment. |
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8th May 2017, 3:18 pm
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#2 |
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Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,943
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Re: very old valves, where to get sent to US
Have you seen this thread?
Loose bases don't mean that the valves are faulty, only that the glue holding the bases in place has failed with age. There are various techniques to glue them back on which you will find described here and on US forums. Valves last a lot longer that people often assume. |
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8th May 2017, 3:25 pm
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#3 |
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Octode
Join Date: May 2010
Location: Worcestershire, UK.
Posts: 1,880
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Re: Very old valves, where to get sent to US?
It is very likely that all the valves you need will be found here, from one or more of the forum members, and they would be more than willing to send them to you. With a set this old some of the valves may be scarce, so could take some time to track down.
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8th May 2017, 3:30 pm
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#4 | |
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Pentode
Join Date: Mar 2016
Location: Champaign, Illinois, USA.
Posts: 227
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Re: very old valves, where to get sent to US
Quote:
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9th May 2017, 9:26 am
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#5 |
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Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,658
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Re: Very old valves, where to get sent to US?
Langrex/Billington have a good stock of the more common valves and are good to deal with, and as 37 says a few forum members have the odd valve or two tucked away.
Andy.
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Curiosity hasn't killed this cat...so far. |
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9th May 2017, 12:54 pm
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#6 |
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Banned
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,897
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Re: Very old valves, where to get sent to US?
If you tell us the numbers, we may find them.
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9th May 2017, 1:51 pm
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#7 |
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Octode
Join Date: May 2010
Location: Worcestershire, UK.
Posts: 1,880
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Re: Very old valves, where to get sent to US?
As follows,
7 x MSP4 1 x MSP41 2 x D42 1 x X41 1 x VMP4G 1 x MHD4 3 x KT41 2 x MS4B 2 x U12 1 x U16 1 x 6/4
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9th May 2017, 2:10 pm
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#8 |
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Pentode
Join Date: Mar 2016
Location: Champaign, Illinois, USA.
Posts: 227
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Re: Very old valves, where to get sent to US?
Those may be not exactly right for my set .. I must check. And old reports
say "check the pin numbers". I will know tomorrow. |
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9th May 2017, 5:15 pm
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#9 |
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Banned
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,897
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Re: Very old valves, where to get sent to US?
I only have MHD4, used. If needed I will test it.
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9th May 2017, 8:44 pm
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#10 |
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Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,194
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Re: Very old valves, where to get sent to US?
Hi, those valves are mostly mainstream British valves of the period. They should also have several equivalents
MSP4 = SPT4A, MSG/HA, S4VA, AC/SH, SGA1 MHD4 = TDD4, AC/HL/DD, DDT, 11A2 etc I may have some of these if you are stuck, but may take some time to look out and test. Note that some of these valves were available in 5 pin and 7 pin bases. Ed Ed |
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