LINE JACK UNIT No. 10


Line Jack No. 10/3A

This a plug in doubler. This converts a single outlet into two parallel outlets.  

All six connections are wired in parallel.

Line Jack No. 10/4A

Converts socket outlet to single jack and 4 way cord with Plug No. 431A.

Wired in series.

Not known whether this was actually produced.
Line jack No. 10/5A

Converts socket outlet to single jack and 4 way cord with spade terminals.

Wired in series.

Not known whether this was actually produced.
Line Jack 10/6A

This LJU is used with answer machines, modems etc.  The plug allows for another instrument to be connected and is wired in series.  The cord is six wire and terminated with a Plug No 631A.

Line Jack No. 10/7A

This LJU is used with answer machines, modems etc.  The plug allows for another instrument to be connected and is wired in series.  The cord is six wire and spade ended.

Drawing - 96575.

Line Jack Unit No. 10/11A

This LJU is used with answer machines, modems etc.  The plug allows for another instrument to be connected.  The cord is six wire and spade ended.

Drawing - 96600.

Line Jack Unit No. 10/13A

This is a single line unit.  It comprises of a jack, a socket and a length of 15m or 30m of cable.

The cable can be either Cable, Equipment 2402 (2 pair) or 2053 (3 pair).

These were used by customers as an easy way to connect an extension socket.

Introduced circa 1985.

Drawing - 96537.

 

   
Line Jack Unit No. 10/14A

This is a single line module, sometimes referred to as a RF3.  It is designed to fit into a standard PSTN socket.  It is designed for LW/MW broadcast interference suppression and contains four chokes connected to wires 2, 3,4 and 5 of the PSTN plug.

 

 

 
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Last revised: April 21, 2025

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