[TheList] Phone Jacks

Mon Oct 29 16:24:38 AEDT 2012

Hi John,

The capacitor you describe is a 1.0 uF capacitor which I would expect 
you'd find on a 2 wire jack. I'd expect a 1.8 uF cap on a true master jack.

A true master jack would also have a 470k resistor & a surge arrestor 
fitted to it.

Is there a number or letter moulded into the front of the jack?

Unfortunately the options are to either change all jacks to 2-Wire jacks 
or find a second hand Master Jack as they haven't been available for 
quite some time.

The capacitor on your Master Jack is fine, otherwise the phone wouldn't 
ring. The problem is likely to be between the red wire and it's 
equivalent contact on the BT plug.

Sorry I couldn't help more.

Regards,

Neill.

On 29/10/2012 3:40 p.m., John Barnhill wrote:
>
> I am needing to replace my ‘master jack’ which has gone faulty (phone 
> rings but no voice/line noise) – it is a ‘Saturn’ jack and has a 
> 105K250JS capacitor inside it. The 3 extension ‘jacks’ that are fed 
> from this ‘master’ are all working OK. Once I mention the ‘capacitor’ 
> to DSE, Jaycar, Egleys etc. they all go into ‘don’t know mode’. As I 
> don’t have a ‘line maintenance contract’ with Telstra Clear (who took 
> over Saturn) they want $300 to have a look at it. What ‘phone jack’ 
> should I be asking for?
>
> Thanks,
>
> John B
>
>
>
> _______________________________________________
> TheList mailing list
> TheList at radiowiki.org.nz
> http://radiowiki.org.nz/mailman/listinfo/thelist_radiowiki.org.nz