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Old 18th Mar 2017, 8:32 am   #24
Dave Moll
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Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,118
Default Re: GPO Jack unit 1B

As it happens, this unit is also currently being discussed in the Telephone Heritage Group Yahoo group, where a pointer has been given to the correct circuit diagram - in case it helps to clarify matters. This does, however, only show the unit wired for a straight telephone handset, and I see no provision for a cradle (or gravity) switch.

As Mr Sparks has already noted, this circuit does not include a ringer.
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