Yet another mystery object - UK Vintage Radio Repair and Restoration Discussion Forum

boxdoctor · 12th Jun 2017, 1:02 pm

Hello,
I found this device in a box of miscellaneous junk from the loft of someone (deceased) who had been "Interested in radio"
I've applied various test meters and the cunningly designed Chinese "LCR and everything else" checker to this , and I get no readings of other than all-round open circuit on any of my meters.
The three stub-ends appear to have been soldered into a P.C.B. As can be seen, there is what looks like an evacuation "pinch" at one end, and the inscription.
Anybody recognise this device, please? Tony.

Herald1360 · 12th Jun 2017, 1:04 pm

Spark gap overvoltage protector?

Refugee · 12th Jun 2017, 3:56 pm

That looks like a spike protection device.
I have in the past used two terminal ones but yours looks like it is dual voltage as the ends are black/white. That one will have been a lot more than the pound or so the two terminal ones cost.

Terry_VK5TM · 13th Jun 2017, 4:30 am

Gas Discharge Surge Arrester.

Quite often used in Ham radio antenna systems way back when (more modern versions still are).

Terry

ms660 · 13th Jun 2017, 8:54 am

Similar:

https://www.comtecdirect.co.uk/produ...rrestor/PG4025

Lawrence.

boxdoctor · 13th Jun 2017, 10:28 am

Thanks for the comments, gents.
It looks like it is some kind of aerial static/lightning arrester.
It will be put in the very large "Might come in useful" draw.

Then again, I may fit it to my long-wire aerial system. At least it will be doing something useful then.

Cheers, Tony.

Mods: Mystery solved, I think. Please close if you wish.

12th Jun 2017, 1:02 pm	#1
boxdoctor Rest in Peace Join Date: Sep 2010 Location: Ripley, Derbyshire, UK. Posts: 785	Yet another mystery object Hello, I found this device in a box of miscellaneous junk from the loft of someone (deceased) who had been "Interested in radio" I've applied various test meters and the cunningly designed Chinese "LCR and everything else" checker to this , and I get no readings of other than all-round open circuit on any of my meters. The three stub-ends appear to have been soldered into a P.C.B. As can be seen, there is what looks like an evacuation "pinch" at one end, and the inscription. Anybody recognise this device, please? Tony. Attached Thumbnails

12th Jun 2017, 1:04 pm	#2
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: Yet another mystery object Spark gap overvoltage protector? __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

12th Jun 2017, 3:56 pm	#3
Refugee Dekatron Join Date: Apr 2012 Location: Worksop, Nottinghamshire, UK. Posts: 5,554	Re: Yet another mystery object That looks like a spike protection device. I have in the past used two terminal ones but yours looks like it is dual voltage as the ends are black/white. That one will have been a lot more than the pound or so the two terminal ones cost.

13th Jun 2017, 4:30 am	#4
Terry_VK5TM Nonode Join Date: Oct 2010 Location: Tintinara, South Australia, Australia Posts: 2,343	Re: Yet another mystery object Gas Discharge Surge Arrester. Quite often used in Ham radio antenna systems way back when (more modern versions still are). Terry

13th Jun 2017, 8:54 am	#5
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Yet another mystery object Similar: https://www.comtecdirect.co.uk/produ...rrestor/PG4025 Lawrence.

13th Jun 2017, 10:28 am	#6
boxdoctor Rest in Peace Join Date: Sep 2010 Location: Ripley, Derbyshire, UK. Posts: 785	Re: Yet another mystery object Thanks for the comments, gents. It looks like it is some kind of aerial static/lightning arrester. It will be put in the very large "Might come in useful" draw. Then again, I may fit it to my long-wire aerial system. At least it will be doing something useful then. Cheers, Tony. Mods: Mystery solved, I think. Please close if you wish.