Re: Yet more radios needed

["Robert Parnell" <rparnell@netspace.net.au>]

I'm here! Haven't had much time to read this newsgroup because I have been
doing so much overtime working on the said radio systems!

I am rather reluctant to comment at the moment, especially since it is a
very political issue at present. Both the CountyNet (old FreightRail) and
MetroNet (old CityRail) have draw backs and advantages. Reading through
these postings, the general operation of these systems has been identified
by some people, although there are still some inaccuracies. Briefly, both
systems use the same frequency band, have different protocols and channel
spacings. CountryNet uses GPS to determine which channel to communicate on,
while MetroNet uses transponders located in the "4 foot". Some obvious
problems can be worked out by most...

(I will write an article about the MetroNet system when I get a few spare
minutes and the politics settles).

--
Robert Parnell
Rail Access/Argus Telecommunications Technician, Electronics Enthusiast,
Lachlan Valley Railway Director,  NSW HO scale railway modeller
E-mail:<rparnell@netspace.net.au>
John MacCallum <johnmac@lisp.com.au> wrote in message
396E50EE.7D138767@lisp.com.au">news:396E50EE.7D138767@lisp.com.au...
> Michael Kurkowski wrote:
> >
> > howshr@netlink.com.au (Ron Howship) wrote in
> > <396DBB49.ECA9A0E8@netlink.com.au>:
> >
> > >Turn your fscking caps lock off!!!!!!!!!!
> >
> > Go on. Tell us what you really think.
> >
> > While youre at it, wash your mouth out with soap.
> >
> > Michael
> >
> > --
> >      Email: michael {DOT} kurkowski {AT} gunzel {DOT} net
> >           (Any mail sent to usenet.spam@gunzel.net
> >        will be filed into the circular filing cabinet)
> >     IT'S ALIVE! http://www.gunzel.net ICQ: 1459118 / T333.
> >               Yahoo: VR_T333  Mobile: 0416-044-124
> >
> >                 Tolulene, you know what I mean.
>
> I don't see waht the problem is with having the caps lock on is!
> I think he made a valid point.
>
> When Freightcorp Drivers at Lithgow first became aware of the intention
> to install the Metro Net system Freightcorp was still FreightRail.
> The significance of that is that there hadn't been a total divorce
> between City Rail on Freightrail.
>
> The drivers at lithgow (City Rail and Freightrail that is to say)all
> said the same thing. Why on earth have two distinct systems that can't
> talk to each other? Actaully there are 5 systems in use but in practical
> terms it comes back to 3.
>
> The reason why Freightrail at the time went for its own system
> (Country Net) was because the GRN didn't extend to all areas covered
> by rail and so Freightrail decided it needed its own system.
>
> For technical reasons when City Rail decided to install the Metro net
> system they went for a trunking system not unlike the GRN.
>
> The mistake they made with Metro Net is that they didn't make provision
> for plain old Simplex operation on 450.050 mhz ( the old Train Radio
> Frequency). The Country Net does and so does the Aware system on
> NR classes.
>
> I was lead to believe that there was going to be a upgrade to the
> Metro Net radios on City Rail trains that will allow use on 450.050 Mhz
> simplex.
>
> Robert Parnell where are you? You may be able to enlighten us as to
> what is being proposed.
>
>
>
> --
>
> Pope
>
> Alias John MacCallum