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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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3rd May 2023, 7:24 am | #41 |
Nonode
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Re: Bare wire phone lines
Some years ago I maintained the pa system in the local church, This was originally a valve system and had been updated prior to my taking over.
However the original 100V speaker distribution was still in place and used. This comprised thin open wires to reduce the visibility as it crossed the church at a high level. Not telecoms but an unusual application of open wires. Peter |
3rd May 2023, 9:33 am | #42 |
Dekatron
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Re: Bare wire phone lines
Wasn't that how receiver-station-to-house wired Rediffusion radio broadcasts were implemented in the 1930s, decades later to be replaced by piped telly at HF in multicore twisted-pair? I have a feeling that original Rediffusion system would be 600 Ohm Zo wire spacing too.
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3rd May 2023, 9:58 am | #43 | |
Octode
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Re: Bare wire phone lines
Many thanks for the post.
Wow, many years later I now know what they were for… I suppose Southend being on the cost/Thames estuary has its fair share of Sea Gulls. Manners Way is just the other side of the A127 to Priory Park, which was opposite the Ekco Radio Works, thinking about it Manners way ran alongside Ekco sports ground – maybe, they had avian events or suchlike in the park or even the Ekco sports ground? Thanks again. Terry Quote:
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3rd May 2023, 11:04 am | #44 | ||
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Re: Bare wire phone lines
Quote:
Indeed the pictures of "loading coils" are enormous metal clad boxes. I wonder who told me they were "loading coils". And why they'd be needed so close to the exchange. Another theory of the same vintage was they were intended to reduce radio interference in some miraculous way. I can't say there were many game birds in this locality though I suppose there may have been some pigeon lofts back then. It was quite odd because those things on the wires only appeared in a very specific spot, I don't recall seeing them anywhere else in the locality. |
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3rd May 2023, 11:11 am | #45 |
Dekatron
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Re: Bare wire phone lines
I asked my dad what those things on the phone wires were and he said they were to stop birds flying into them. I didn't really believe him, but it seems he was right
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3rd May 2023, 6:14 pm | #46 |
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Re: Bare wire phone lines
I always associated those thinks with pigeon lofts, seems I was right. I didn't know they were corks though.
Let's face it, finding a load of corks in the back of any works van could have an entirly different connotation
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4th May 2023, 7:02 pm | #47 |
Pentode
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Re: Bare wire phone lines
brings back memories; swans fly at the height of the wires, if the bird's head and neck get past first wire then flight stops, bird can fall and restart or if wires cross over, sub's phone tinkles/no-dial-tone, and its not nice mid span removing bird. Cliff.
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4th May 2023, 7:50 pm | #48 |
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Re: Bare wire phone lines
Hi,
This thread reminded me of this telegraph pole near our son's house in Warrington. It's a surprise that the old insulators weren't taken away when the wiring was updated. Cheers, Pete.
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4th May 2023, 9:03 pm | #49 | |
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Re: Bare wire phone lines
Quote:
Maybe they'll remove them when they update the wiring again for FTTP, on the other hand look at my photo in post #36
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4th May 2023, 9:07 pm | #50 |
Tetrode
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Re: Bare wire phone lines
I’ve got one of those insulators on my desk, makes a great paperweight.
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8th Jun 2023, 9:07 am | #51 |
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Re: Bare wire phone lines
Finally took a picture this morning…
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8th Jun 2023, 5:46 pm | #52 | |
Heptode
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Re: Bare wire phone lines
Quote:
Rog |
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8th Jun 2023, 7:21 pm | #53 |
Dekatron
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Re: Bare wire phone lines
Similar insulators - which many would associate with bare-wire lines - also had a variant, usually black/grey made from some sort of asphalt/fibre composition, with a flat screw-on top and were used with two-wire insulated: the screw-on top provided a termination point between the overhead wire and a subsequent non-tensile drop-wire.
The insulators shown have the same flat-top profile I remember. Something similar was used at my parents' house - built in the mid-50s, we had two phone lines, one for the house and one for my father's study [yes, the working-from-home/home-office idea is not new!]
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18th Jun 2023, 1:15 pm | #54 |
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Re: Bare wire phone lines
On my walk this morning I spotted a house with two black composition insulators on a corner bracket on one corner, and another corner bracket with a pair of white one groove (or maybe two groove, I forget) insulators on the other corner.
A house further up the road has a pair of black composition insulators on a corner bracket. |
19th Jun 2023, 9:38 am | #55 |
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Re: Bare wire phone lines
I spotted this sideknob arrangement, still extant, in Perth, Scotland, 2014. Don't know if it was/is an active cct, though. Didn't have a multimeter, watch-receiver or clips or test-set on me at the time.
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