Re: Brief Signalling failure at Camberwell

[Mark Bau <markbau@earthlink.net>]

in article tp6hdt4bp71blsk7jmms539ithgbemthuo@4ax.com, Andrew Price at
aprice@mail.dotcom.fr wrote on 4/14/01 12:56 PM:

> On Sat, 14 Apr 2001 17:26:44 GMT, Mark Bau <markbau@earthlink.net>
> wrote:
> 
> [---]
> 
>> We do use a lot of A.C. but only so we can get different frequencies such as
>> code transmission through the rails. Is there anything like "Electrocode" in
>> Australia?
> 
> As far as I can recall, coded track circuits of this type have been in
> use in parts of Australia since the early 1960s.
> 
> Hamersley Iron uses Microtrax track circuits.

Interesting, I do know the VIC's Western line C.T.C. which was done in the
early to mid 80's simply used the existing electric staff lines for code
transmission. I would be very interested to know where in Aus. code
transmission through the rails was done in the early 60's.

Mark