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Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details. |
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18th Nov 2019, 11:30 am | #1 |
Dekatron
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
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Pye wireless intercom PTC1001
I bought this for £8 at a junk shop purely from curiosity as it was missing the instructions label on the bottom and I could not work out what it was for. I know now I need 2 of them to be of any use!
It is a wireless intercom that communicates over the mains wiring and includes 3 valves which I presume form an amplifier and modulator. Has anyone ever got a pair working? This one is missing the knobs but is otherwise in very good condition and looks like something out of a 50's film. |
18th Nov 2019, 12:22 pm | #2 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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Re: Pye wireless intercom PTC1001
Instructions, cribbed from a convenient eBay posting.
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18th Nov 2019, 12:54 pm | #3 |
Heptode
Join Date: Oct 2018
Location: Blackburn, Lancashire, UK.
Posts: 729
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Re: Pye wireless intercom PTC1001
Is it just me, or does having what amounts to an 'optional' earth connection seem odd to anyone else?
"Oh, you can earth it if you feel like it, but it doesn't really matter."
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Best Regards, Peter. |
18th Nov 2019, 1:13 pm | #4 |
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,998
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Re: Pye wireless intercom PTC1001
Probably because back when it was made there were still loads of 2-pin power outlets (5 or 15 amp) in service, so there may have been nowhere to connect the earth!
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18th Nov 2019, 3:58 pm | #5 |
Heptode
Join Date: Oct 2018
Location: Blackburn, Lancashire, UK.
Posts: 729
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Re: Pye wireless intercom PTC1001
Yes, G6Tanuki, I had realised that myself!
So, in light of that fact, what was the point of providing an earth connection at all in the first place? Any chance of a picture, please, PJL?
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Best Regards, Peter. Last edited by Lancs Lad; 18th Nov 2019 at 4:06 pm. |
18th Nov 2019, 6:48 pm | #6 | |
Heptode
Join Date: Mar 2017
Location: Cedar Grove, Wisconsin, USA.
Posts: 823
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Re: Pye wireless intercom PTC1001
Quote:
The US wiring scheme is 120-N-120 single phase in many places. There was a terminal on the chassis rear for earthing as an alternative to possibly use an earth as a transmitting means. Never tried it. Dave, always trying something different. |
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18th Nov 2019, 7:52 pm | #7 |
Dekatron
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
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Re: Pye wireless intercom PTC1001
I suspect the switch is to specify the wire the RF will be injected to. The unit itself is AC/DC.
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19th Nov 2019, 1:06 pm | #8 |
Dekatron
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
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Re: Pye wireless intercom PTC1001
Pics attached
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