GPO Planset conversion - UK Vintage Radio Repair and Restoration Discussion Forum

JohnBHanson · 16th Apr 2017, 10:43 am

I have a wall mounted planset, but it does not have the additional cradle switch to control the bell circuit (This is a different switch to the table version).

I have heard that it is possible to convert the planset telephone to work on parallel bells rather than serial bells of the original design. Does anyone have details on how to do this?

Alternatively does anyone know how to use the planset without the auxiliary cradle switch contacts?

AndiiT · 16th Apr 2017, 12:29 pm

Hi, I have quite a bit of experience with Plansets, well at least in the past from hours of experimenting. I have produced some documents which may be of help to you. Feel free to PM me to discuss further

Andrew

OscarFoxtrot · 16th Apr 2017, 9:28 pm

Standard conversion is as follows:

http://www.britishtelephones.com/pstconv1.htm#625

Not sure if that goes through the additional hookswitch. Are you wanting to use the planphone with plan extensions?

16th Apr 2017, 10:43 am	#1
JohnBHanson Heptode Join Date: Aug 2009 Location: Worthing, Sussex, UK. Posts: 661	GPO Planset conversion I have a wall mounted planset, but it does not have the additional cradle switch to control the bell circuit (This is a different switch to the table version). I have heard that it is possible to convert the planset telephone to work on parallel bells rather than serial bells of the original design. Does anyone have details on how to do this? Alternatively does anyone know how to use the planset without the auxiliary cradle switch contacts?

16th Apr 2017, 12:29 pm	#2
AndiiT Octode Join Date: Aug 2005 Location: Saltburn-East, Cleveland, UK. Posts: 1,786	Re: GPO Planset conversion Hi, I have quite a bit of experience with Plansets, well at least in the past from hours of experimenting. I have produced some documents which may be of help to you. Feel free to PM me to discuss further Andrew

16th Apr 2017, 9:28 pm	#3
OscarFoxtrot Heptode Join Date: Apr 2011 Location: Edinburgh, UK. Posts: 805	Re: GPO Planset conversion Standard conversion is as follows: http://www.britishtelephones.com/pstconv1.htm#625 Not sure if that goes through the additional hookswitch. Are you wanting to use the planphone with plan extensions?