View Single Post
Old 15th Nov 2017, 11:35 pm   #64
russell_w_b
Dekatron
 
russell_w_b's Avatar
 
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
Posts: 3,687
Default Re: GPO 332 transmitter issue

Oh, goody. You now have a working telephone that you can speak on and will receive calls. Just need to sort the dial now. The wiring colours look OK: T1, 2, 3, 4, 5 being blue, slate, brown, orange and pink respectively.

Pink and orange (4, 5) are the dial pulse terminals.

Brown and pink (3, 4) are one set of DON contacts.

Blue and slate (1, 2) are the other set of DON contacts.

I see yours is the older 'slipping cam' dial. Terminals 2 and 3 are linked on the newer 'trigger' dials. You could try linking 2 and 3 on yours. Attached is a schematic of a trigger dial, but it shouldn't be too difficult to work out which are the right connections on your dial. I'd remove all the wires from the actual dial and check out which connections are which.

Don't forget to remove the link between T4 and T5 on the dial strip when ready to use the dial!

The 0.1u cap should be connected to T4 on the dial strip, not T1.
Attached Thumbnails
Click image for larger version

Name:	t322paster.jpg
Views:	63
Size:	85.4 KB
ID:	152324  
__________________
Regds,

Russell W. B.
G4YLI.
russell_w_b is offline