UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Components and Circuits

Notices

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.

Reply
 
Thread Tools
Old 20th Apr 2024, 9:46 am   #1
Diabolical Artificer
Dekatron
 
Diabolical Artificer's Avatar
 
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,696
Default Curious bolt - ID?

Clearing out the shed this week I found a threaded section of brass with a central hole, inside of which was a wire. This wire was soldered at both ends, see pics. Apologies for the low quality. The dia was 3/8".

The threaded bar/bolt came off a bit of vintage test gear, though I can't remember exactly what. I'm pretty sure it had no electrical connections. What would the purpose of this be? Anyone seen something like it before?

Andy.
Attached Thumbnails
Click image for larger version

Name:	IMG_2823.jpg
Views:	205
Size:	92.5 KB
ID:	296600   Click image for larger version

Name:	IMG_2825.jpg
Views:	190
Size:	100.0 KB
ID:	296601   Click image for larger version

Name:	IMG_2826.jpg
Views:	186
Size:	99.1 KB
ID:	296602   Click image for larger version

Name:	IMG_2827.jpg
Views:	177
Size:	101.6 KB
ID:	296603  
__________________
Curiosity hasn't killed this cat...so far.
Diabolical Artificer is online now   Reply With Quote
Old 21st Apr 2024, 8:57 am   #2
RichardGM
Hexode
 
Join Date: Mar 2022
Location: Harrow, Middlesex, UK.
Posts: 253
Default Re: Curious bolt - ID?

Unfortunately auto-focus hasn't worked very well for those pictures. Any chance of taking them again with manual focus?
RichardGM is offline   Reply With Quote
Old 21st Apr 2024, 10:55 am   #3
Diabolical Artificer
Dekatron
 
Diabolical Artificer's Avatar
 
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,696
Default Re: Curious bolt - ID?

Sorry, try these. The wire doesn't seem to be anything special like high resistance wire. I wondered if was some sort of wave guide or coax type thing.

Andy.
Attached Thumbnails
Click image for larger version

Name:	IMG_2834.jpg
Views:	140
Size:	49.6 KB
ID:	296625   Click image for larger version

Name:	IMG_2835.jpg
Views:	141
Size:	81.2 KB
ID:	296626   Click image for larger version

Name:	IMG_2836.jpg
Views:	135
Size:	67.9 KB
ID:	296627   Click image for larger version

Name:	IMG_2837.jpg
Views:	137
Size:	70.1 KB
ID:	296628  
__________________
Curiosity hasn't killed this cat...so far.
Diabolical Artificer is online now   Reply With Quote
Old 22nd Apr 2024, 2:10 pm   #4
m0cemdave
Octode
 
Join Date: Feb 2009
Location: Bletchley, Buckinghamshire, UK.
Posts: 1,228
Default Re: Curious bolt - ID?

Was the wire soldered to the top, then passed all the way though to be soldered to the associated nut or a tag inside the equipment? In which case, it may have been a tamper-evident seal.
m0cemdave is offline   Reply With Quote
Old 22nd Apr 2024, 2:23 pm   #5
G6Tanuki
Dekatron
 
G6Tanuki's Avatar
 
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 14,082
Default Re: Curious bolt - ID?

What is the thread??

If it is 3/8-24 UNF then the thing could be the remains of a short whip antenna used for something like field strength measurement at. VHF, there being loads of insulated antenna bases that take this thread.
__________________
I'm the Operator of my Pocket Calculator. -Kraftwerk.
G6Tanuki is online now   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 4:14 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.