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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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31st Oct 2018, 12:11 pm | #1 |
Pentode
Join Date: Nov 2011
Location: Wigan, Greater Manchester, UK.
Posts: 147
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GPO 332 mk1 with modifications
This phone has a genuine 332 bakelite casing and appropriate handset with braided cord. The base plate of the phone is stamped "L11560C7" and "Special". The normal 332 wiring diagram is on the inside of the base plate.
The chassis is not a 332, it has looks more modern and is marked "812L 558/3A", it has a buzzer marked "32A/3 GEN/1" and a capacitor marked GEC A595 0.1 M250. Has this ever been a viable phone made for special purposes or just a collection of odd parts? |
31st Oct 2018, 12:59 pm | #2 |
Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,861
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Re: Gpo 332 mk1 with modifications
The baseplate number suggests an ATM phone: http://www.britishtelephones.com/atm/l11560.htm
Very similar (chassis excepted) to my recent-ish charity shop purchase described here, which incidentally, is now our main house phone: https://www.vintage-radio.net/forum/...d.php?p=992414 Is the yellow thing the cap? If so, how is it mounted? Nick. Last edited by Nickthedentist; 31st Oct 2018 at 1:08 pm. |
31st Oct 2018, 7:27 pm | #3 |
Triode
Join Date: May 2007
Location: Northampton, UK.
Posts: 36
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Re: GPO 332 mk1 with modifications
The S58 markings indicate the internal sub-assembly was made by Siemens Brothers in 1958. So yes, it is a home-made assembly of odd parts. The wiring looks like a rat's nest (sorry!). It would have been bundled with lacing cord had it been an official modification.
Andy. |
1st Nov 2018, 11:48 am | #4 |
Pentode
Join Date: Nov 2011
Location: Wigan, Greater Manchester, UK.
Posts: 147
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Re: GPO 332 mk1 with modifications
Thank you all for your advice, Nick, the yellow thing you can see is the PVC insulation on the buzzer coil, the capacitor is a small square black plastic type mounted on the buzzer.
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2nd Nov 2018, 10:36 am | #5 |
Tetrode
Join Date: Feb 2009
Location: Caernarfon, Gwynedd, UK.
Posts: 51
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Re: GPO 332 mk1 with modifications
The chassis is a 312 from 1958
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2nd Nov 2018, 10:50 am | #6 |
Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,861
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Re: GPO 332 mk1 with modifications
Yes, I think the "8" quoted in post 1 must in fact be a "3".
If it were mine, I think I'd invest in a replacement chassis c/w ASTIC and bell etc. They seem to crop up from various online sellers for surprisingly little. Nick. |
2nd Nov 2018, 12:45 pm | #7 |
Pentode
Join Date: Nov 2011
Location: Wigan, Greater Manchester, UK.
Posts: 147
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Re: GPO 332 mk1 with modifications
Thanks to all for your help and advice.
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