Re: Glenbrook - Vandalised Phone

["Richard Wardle" <ricdeb@mpx.com.au>]

James Robinson <NOSPAM@ERIE.NET> wrote in message
384DAD1A.DD3E601C@ERIE.NET">news:384DAD1A.DD3E601C@ERIE.NET...
> Richard Wardle wrote:
>
> > pmelling@orac.net.au wrote:
> > >
> > > This may sound like a dumb question, but why don't they use radios?
> >
> > Because it is an unsafe medium. Anyone can get hold of a two-way radio,
say
> > that they are signaller so and so and tell u to pass the signal. Very
unsafe
> > practice. The only way to be able to use a radio is to have a SECURE
> > channel.
>
> Radios are used successfully in other places in the world for the
> issuance of such operating authorities.  The security issue is usually
> handled by requiring the use of a strict set of procedures and tight
> phraseology.  The security of the transmissions is not typically an
> issue.

I cannot comment on the use of radios from elsewhere in the world. The only
question I have concerning that is are they a SECURE channel. Secure is used
only by train crews and the signaller. The current hand held system here is
also used by shunters, guards and station staff.