This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Restoration of braided flexible cable, circa 1925 (Low Voltage!)

Managed to locate a pair of circa 1925 Ericsson BBC Headphones suitable for my similar age Ericsson Crystal Radio. The braided flexible cable looks a bit mucky.

I suspect that the inners are tinsel wrapped cotton similar to that used by Post Office Telephones in the days of plaited handset flexibles of the 1940s 50s. I guess there would be rubber overall insulation beneath the braid.

Question is, how to clean the cable up? Ideas that have so far come to mind are 1) Hand hot water with some washing up liquid, or 2) electrical solvent such as Isopropyl Alcohol. I am a little wary as to be would be kinder to the rubber over insulation (If any) and the tinsel covered cotton?

Either way, or any other way, would be to afterwards jang the wet flex close to a CH radiator to dry out.

Thanks.

Clive

Parents

0 AncientMariner over 5 years ago

David, re Rugby Radio, back in October 2016 I posted about the Rugby Radio 16 kHz Morse transmissions being inadvertantly picked up at the Manor Studio when Tubular Bells was being recorded. https://www.theiet.org/Forums/Forum/messageview.cfm?catid=205&threadid=83767&STARTPAGE=1&FTVAR_FORUMVIEWTMP=Linear

I just checked and the YouTube video is still there: https://www.youtube.com/watch?v=b1g_wJQKihc

The centre picture at http://ancient-mariner.co.uk/ was taken at Rugby Radio a few days after the MSF 60 kHz time signal had been transferred to Anthorn. The tower on the left, I took in July 2011 on Alexanderson Day, is one of those at Grimeton/SAQ supporting their multiple-tuned aerial on 17.2 kHz.
https://en.wikipedia.org/wiki/File:Grimetonmasterna.jpg

Clive
Cancel
Vote Up 0 Vote Down

Cancel

Reply

0 AncientMariner over 5 years ago

David, re Rugby Radio, back in October 2016 I posted about the Rugby Radio 16 kHz Morse transmissions being inadvertantly picked up at the Manor Studio when Tubular Bells was being recorded. https://www.theiet.org/Forums/Forum/messageview.cfm?catid=205&threadid=83767&STARTPAGE=1&FTVAR_FORUMVIEWTMP=Linear

I just checked and the YouTube video is still there: https://www.youtube.com/watch?v=b1g_wJQKihc

The centre picture at http://ancient-mariner.co.uk/ was taken at Rugby Radio a few days after the MSF 60 kHz time signal had been transferred to Anthorn. The tower on the left, I took in July 2011 on Alexanderson Day, is one of those at Grimeton/SAQ supporting their multiple-tuned aerial on 17.2 kHz.
https://en.wikipedia.org/wiki/File:Grimetonmasterna.jpg

Clive
Cancel
Vote Up 0 Vote Down

Cancel

Children

No Data

Restoration of braided flexible cable, circa 1925 (Low Voltage!)

Community Rules & Guidelines