Bell Set ?? - UK Vintage Radio Repair and Restoration Discussion Forum

Oldcodger · 4th Jan 2017, 12:10 am

Mentioned in https://www.vintage-radio.net/forum/...d.php?t=132583

it's got me interested in what one this is--

Writing on front says British Telecom ,bells are 24A & B.Coils 2000ohm
Label on back says

"50C DFM 89/1
Made in UK
ser 602 89100064073"

AC/HL · 4th Jan 2017, 12:35 am

It's what the label says, a Bellset 50C, handy if you want the phone to ring in a central location: http://www.britishtelephones.com/bellst50.htm

Oldcodger · 4th Jan 2017, 1:47 am

Thanks ,mate- just interest, as I collected a few of these /other items taking out old BT systems .Problem is that it's that long ago since I had anything to do with BT /GPO numbering that I can't read it any more.

AC/HL · 4th Jan 2017, 12:34 pm

The bell motors could be used to upgrade earlier low impedance phones, the resistor mod is only a bodge.

AndiiT · 4th Jan 2017, 7:59 pm

Hi,
As an aside (and not wanting to take the thread too off topic) the presence of the 1A1 thermistor and the strap to the terminal marked 'E' suggests that this particular bell was at one time used as an extension bell on a party (shared service) line, or possibly as an extension bell to the "B" end of an external plan 105/107 arrangement.

Andrew

Oldcodger · 16th Jan 2017, 9:43 pm

AndiiT- can't remember where I got this one, but most likely from an old BT system being on an analogue extension.

4th Jan 2017, 12:10 am	#1
Oldcodger Nonode Join Date: Oct 2014 Location: West Midlands, UK. Posts: 2,181	Bell Set ?? Mentioned in https://www.vintage-radio.net/forum/...d.php?t=132583 it's got me interested in what one this is-- Writing on front says British Telecom ,bells are 24A & B.Coils 2000ohm Label on back says "50C DFM 89/1 Made in UK ser 602 89100064073" Attached Thumbnails

4th Jan 2017, 12:35 am	#2
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Bell Set ?? It's what the label says, a Bellset 50C, handy if you want the phone to ring in a central location: http://www.britishtelephones.com/bellst50.htm

4th Jan 2017, 1:47 am	#3
Oldcodger Nonode Join Date: Oct 2014 Location: West Midlands, UK. Posts: 2,181	Re: Bell Set ?? Thanks ,mate- just interest, as I collected a few of these /other items taking out old BT systems .Problem is that it's that long ago since I had anything to do with BT /GPO numbering that I can't read it any more.

4th Jan 2017, 12:34 pm	#4
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Bell Set ?? The bell motors could be used to upgrade earlier low impedance phones, the resistor mod is only a bodge.

4th Jan 2017, 7:59 pm	#5
AndiiT Octode Join Date: Aug 2005 Location: Saltburn-East, Cleveland, UK. Posts: 1,786	Re: Bell Set ?? Hi, As an aside (and not wanting to take the thread too off topic) the presence of the 1A1 thermistor and the strap to the terminal marked 'E' suggests that this particular bell was at one time used as an extension bell on a party (shared service) line, or possibly as an extension bell to the "B" end of an external plan 105/107 arrangement. Andrew

16th Jan 2017, 9:43 pm	#6
Oldcodger Nonode Join Date: Oct 2014 Location: West Midlands, UK. Posts: 2,181	Re: Bell Set ?? AndiiT- can't remember where I got this one, but most likely from an old BT system being on an analogue extension.