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General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. |
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22nd Feb 2019, 9:46 pm | #1 |
Dekatron
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Liners
Radio frequency liner, intermediate frequency liner, terms I have only just come across in all my years in this game.
Lawrence. |
22nd Feb 2019, 9:48 pm | #2 |
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
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Re: Liners
Never heard the term. What does it mean
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22nd Feb 2019, 9:50 pm | #3 |
Dekatron
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Re: Liners
Last edited by ms660; 22nd Feb 2019 at 10:00 pm. Reason: Source credit |
22nd Feb 2019, 9:52 pm | #4 |
Moderator
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Re: Liners
Only ever heard 'Liner Amplifier' from people meaning linear amplifier.
Oh, and the Belcom Liner-2 a low-cost VHF amateur radio transmitter with a remarkably filthy output signal. David
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22nd Feb 2019, 10:03 pm | #5 |
Nonode
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Location: Preston, Lancashire, UK.
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Re: Liners
I'd never heard the term either, but I've just looked in my Bulgin catalogue for 1938 and there they are!
I'll scan the relevant page tomorrow, it doesn't tell us much more, but refers to their use as 'lining up Intermediate Frequency Transformers' Andy |
22nd Feb 2019, 10:34 pm | #6 |
Nonode
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Re: Liners
Never heard the word in a radio context, but I do have a 3/4 ton Liner dumper.
Les. |
22nd Feb 2019, 11:41 pm | #7 |
Dekatron
Join Date: Jan 2012
Location: Brentwood, Essex, UK.
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Re: Liners
Interesting. My 1936/37 Bulgin catalogue only lists the V.T.17 465 K.C/S "Liner" (@ 12/6d). Quotation marks in the original, so possibly it was a newly-coined word. Sales were presumably positive, in view of the increased range of liners (and higher price) in the 1937/38 guide.
n.b. While the 1937/38 guide only refers to use on DC, the 1936/37 catalogue says that the V.T.17 can be used on " DC or AC mains of 200- 250 volts (any periodicity). ". Last edited by emeritus; 23rd Feb 2019 at 12:01 am. |
23rd Feb 2019, 12:58 am | #8 |
Dekatron
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Location: Heckmondwike, West Yorkshire, UK.
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Re: Liners
Spot frequency signal generator for aligning IFs, I've seen then called a modulated test oscillator too.
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23rd Feb 2019, 9:13 am | #9 |
Nonode
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Location: Aberaeron, Ceredigion, Wales, UK.
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Re: Liners
Never heard the term before how interesting.
Cheers John |
23rd Feb 2019, 11:41 am | #10 |
Dekatron
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Re: Liners
An abbreviation of "Liner Upper" presumably?
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23rd Feb 2019, 12:02 pm | #11 |
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Re: Liners
The word and its meaning sound American to me.
Al. |
23rd Feb 2019, 12:49 pm | #12 |
Nonode
Join Date: May 2007
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Re: Liners
This is the relevant page from the 1938 Bulgin catalogue. I wonder what was inside the metal can of the Liner?
By the way, how do others pronounce the word 'Bulgin'? I've always said it to rhyme with 'begin', but others I know say it to rhyme with the stuff you put in your tonic. What did Mr. Bulgin call himself? Andy |
23rd Feb 2019, 1:40 pm | #13 |
Rest in Peace
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Re: Liners
Reminds me of the old joke:
1st. tech.: "That capacitor needs replacing!" 2nd. tech.; "Why?" 1st. tech.: "Just look at it! It's bulging!" Al. |
23rd Feb 2019, 2:27 pm | #14 |
Dekatron
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Re: Liners
Here's a scan of the only Liner listed in the 1936/37 catalogue. It says that it uses a neon bulb to determine the frequency and, unlike the 1937/38 and 1938 catalogues references, is operable on either AC or DC mains voltages. Presumably redesigned for economy as a suitable DC supply would always be available to the user.
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23rd Feb 2019, 3:18 pm | #15 |
Nonode
Join Date: May 2007
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Re: Liners
That's interesting, I'd always associated neon 'relaxation oscillators' with much lower frequencies, but it does explain why so little power was required by the unit, with no valve heater/filament.
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23rd Feb 2019, 3:22 pm | #16 | |
Dekatron
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Re: Liners
Quote:
Lawrence. |
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23rd Feb 2019, 4:36 pm | #17 |
Nonode
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Re: Liners
Good thinking, Lawrence, that makes sense.
Andy |
23rd Feb 2019, 4:53 pm | #18 |
Dekatron
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Re: Liners
Here's a homebrew version article, the Neogen...Book page 729:
https://www.americanradiohistory.com...RC-1963-05.pdf Lawrence. |