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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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9th May 2022, 6:21 pm
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#1 |
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Octode
Join Date: Feb 2009
Location: Wallasey, UK.
Posts: 1,314
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What are these?
I received this along with some 'valve related bits' in a recent auction. Please can someone tell me what are they and what are they used for?
One is marked: ZC2616, X1356 and IQH/150. |
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9th May 2022, 6:28 pm
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#2 |
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Heptode
Join Date: Jan 2004
Location: Stockport, Greater Manchester, UK.
Posts: 827
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Re: What are these?
They are B3G valveholders for EA50 or 6D1 diodes.
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9th May 2022, 6:29 pm
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#3 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: What are these?
They look like 3 pin valve holders, eg: EA50 and similar envelope construction types.
EDIT: Post crossed Lawrence. |
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9th May 2022, 9:08 pm
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#4 |
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Octode
Join Date: Feb 2009
Location: Wallasey, UK.
Posts: 1,314
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Re: What are these?
Aha, I hadn't noticed the 3 pin holes! Thanks.
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9th May 2022, 9:15 pm
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#5 |
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Dekatron
Join Date: Sep 2006
Location: Kilmarnock, Ayrshire, UK.
Posts: 5,422
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Re: What are these?
Blimey I was using one of those holders yesterday for an EA50 diode for an experiment.
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Cheers, Trevor. MM0KJJ. RSGB, GQRP, WACRAL, K&LARC. Member |
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9th May 2022, 9:39 pm
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#6 |
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Dekatron
Join Date: Nov 2011
Location: Surrey, UK.
Posts: 4,400
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Re: What are these?
10H/150 (rather than 1QH/150) will be a UK military stock code.
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9th May 2022, 10:08 pm
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#7 | |
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Nonode
Join Date: May 2007
Location: Preston, Lancashire, UK.
Posts: 2,511
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Re: What are these?
Quote:
It is for "Holders, Valve, Type 40", and also includes the small clip to attach the lead to the other end of the EA50. These clips are much harder to find! Andy |
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10th May 2022, 12:17 am
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#8 |
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Hexode
Join Date: Aug 2010
Location: Malvern, Worcestershire, UK.
Posts: 347
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Re: What are these?
Still useful today as TO-220 case power devices can be plugged in for purposes of experiments. As a teen I built a superregen airband receiver using CV1197 (EC53) triodes that also plugged into these holders.
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10th May 2022, 7:59 am
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#9 |
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Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,993
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Re: What are these?
Some of the AVO valve testers have one of those on the top panel.
I'd have to rummage through my files to find out which ones. Craig
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Doomed for a certain term to walk the night |
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10th May 2022, 12:02 pm
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#10 | |
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Octode
Join Date: Feb 2009
Location: Wallasey, UK.
Posts: 1,314
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Re: What are these?
Quote:
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10th May 2022, 3:48 pm
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#11 |
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Nonode
Join Date: May 2007
Location: Preston, Lancashire, UK.
Posts: 2,511
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Re: What are these?
" Is there an online list of military stock codes somewhere? "
Just think of the size of that list! Assuming we are only talking of British numbers......... The list will cover Army, Admiralty and Air Ministry equipment, before Nato Stock numbers replaced individual service numbers. I have a particular interest in the Air Ministry Stores Reference system, covered by AP 1086. This encompasses literally anything and everything needed by the RAF! It was a 'living document', being regularly updated to add things newly introduced and delete things which had become obsolete, so any copy is but a snapshot in time. I don't know how many feet of shelf-space a full paper copy would need, but a lot! AP1086 is divided into Sections, for example Section 10H is entitled "Radio Connectors, Discs Indicating, Fuzes, Leads, Plugs & Sockets and Ancillary Parts, Holders and Terminals" There is no comprehensive online version that I am aware of. Certain Sections are available from various websites, for example in the VMARS archive. I have acquired various original Sections, and various photocopied Sections, as well as as many PDF files as possible. I am willing to help where I have information, but please don't ask for copies of whole Sections! Andy |
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10th May 2022, 5:50 pm
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#12 | |
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Octode
Join Date: Feb 2009
Location: Wallasey, UK.
Posts: 1,314
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Re: What are these?
Quote:
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