GPO 162/232 help!!

[Matt1984]

Hello,

I have acquired another vintage telephone. This one was advertised as a completely original 200 series dated 1936 in untouched condition, no damage and type 10 dial and wider cradle rest. It had the drawer base and stamped FWR 1/232 57.

I paid £76 for it.

When I received the phone, on taking the base off I discover that the internal wiring is of a 162 which is in excellent condition, even though the diagram pasted to the base states 1/232!

I fitted a line cord just to test it and it does work. However, I am aware that the absence of the induction coil is an issue, but what I want to know is how much of an issue?

I don't really want to purchase a type 25 bellset as they are quite pricey and hard to get hold of.

What I want to know is will it be an issue to use the phone as is (I.e. Line cord directly into the phone, no bellset) or will this cause damage to the receiver?

Should I replace the internal wiring with 232 internals?

Thanks,

Matt

[dagskarlsen]

I have changed my ideas about such problems during the years, and today I would have kept it as it is.

If you just will use it now and then, I would have tried to make a simplified circuit.

you have 3 wires
1 (red) going to hook-switch, and then to receiver, and internal coil.
2 (green)going to hook-switch, and then to receiver and transmitter++
3 (white) going to pulse contacts on dial ++

I f you connect ring (line A) to no 3, and tip (line B) to a capacitor 1 to 3 microfarad. and a resistor of 100-220 ohms. The other end of the capacitor to no 1, the other end of the resistor to no 2.

(The capacitor may be the one used to the ringer, (ringer side) to no 1)

Just test it, and tell us if it is OK.

dsk

[Matt1984]

Thanks for the suggestion.

Please can you let me know what lines A, B and C are with reference to the 4 colour BT Line cord (I.e. Red, blue, white, green)

Thanks,

Matt

[dagskarlsen]

I used this diagram: http://www.britishtelephones.com/aus...res/162aw_.jpg Not sure what colors it would be else.

dsk

[BigClick]

Originally Posted by Matt1984

I don't really want to purchase a type 25 bellset as they are quite pricey and hard to get hold of.

Telecom Heritage sell a modern peice of kit, its a bell set minus the actual bell and bell coils (bellset 80a). However bellset 26s are cheaper than 25s and the 80a will fit in the Belll set 25 along with its bell, it would also fit in the base of the telephone.

I think they sell them for about 20$

I also have a spare bellset 26 that I could be parted from for mate's rates.

[dagskarlsen]

You could end up like this

dsk

[Matt1984]

Ok, so I have decided to go down the route of replacing the inards. Only problem is, I cannot get it it to work. There are too many terminals and there seems to be multiple switch hooks.

I have attached a photo to see if anyone can shed any light!

[Pellseinydd]

You've got the 'innards' of a Telephone No 248 and not a Tele 232. The Telephone 248 was used with a 'Bellset 39/44' to provide a 'manager/secretary' intercom arrangement.

See http://www.samhallas.co.uk/repositor.../0000/N348.pdf for the circuit diagram.

The circuit is identical to the Tele 232 but with the additional terminals and an extra set of switch hook contacts.

However there is one different that could be your problem? Terminals 6 and 8 were reversed on earlier versions of the Telephone 248.

With the handset lifted check with an ohmmeter between Terminal 1 and Terminal 6 - should be zero ohms in which case wire exactly as a Tele 232.

If not try, between terminal T1 and T8 and if that is zero ohms, treat 'T8' as 'T6' for connection to receiver (green) and T6 as the connection to D1 on the dial (blue lead in dial cord).

Hope that helps.

[Matt1984]

Thanks for your help.

I have wired it as per the 232 and it seems to be working fine now.

Cheers,

Matt