[TheList] Christchurch Ambulance now digital

Wed Aug 3 13:27:24 AEST 2011

"So what are the advantages of P25 over analog if secure communication 
is not an issue? "

Coverage is improved. Also, on the fringe areas, you either have full 
coverage, or none at all - not the sometimes scrambled guff we can hear 
now and then. Also, the radio itself can tell you if you're in coverage 
or not.

On 3/08/2011 2:54 p.m., Scanhead wrote:
> Perhaps the confusion is because the police are using ESB band with 
> P25 trunking as the replacement for ESA... Which is normally 
> (and probably still) where ambo operates.
>
> Can anyone confirm that current digital scanners are still not able to 
> follow tait P25 trunked? From memory it was to do with the data rate 
> of the control channel (could be wrong). I could get unencrypted voice 
> with my uniden digital but was never able to follow the conversation. 
> Thats why I started looking at software radio etc.
>
> It is ironic that the P25 system came into being because of a need for 
> radio systems and services to inter-communicate, and now it is 
> what separates them. Some will argue that P25 radios can communicate 
> with the old analog systems (mixed mode), but I've been told this is 
> not possible with a trunked system. (again, could be wrong)
>
> So what are the advantages of P25 over analog if secure communication 
> is not an issue?
>
> Scanhead.
>
> On Wed, Aug 3, 2011 at 12:17 PM, Neill Ellis <tgsnoopy at gmail.com 
> <mailto:tgsnoopy at gmail.com>> wrote:
>
>     Hi Grunter,
>
>     I think you might be on to something. I'm pretty sure the media
>     would have let us know if Ambo's were trialling or had gone secure
>     digital.
>
>     Regards,
>
>     Neill.
>
>
>
>     On 3/08/2011 11:50 a.m., Grant Carroll wrote:
>
>         Hello,
>         I am still listening to ambos on the same frequencies in the
>         ESB band they have been on for ages. This is on an analogue
>         scanner and my digital scanner with no "P25" coming up to
>         suggest the transmissions are digital and obviously if I can
>         hear them on an analogue scanner they aren't. Am I missing
>         something here? Are they being simulcast on analogue and new
>         digital frequencies for now or is their going digital just a
>         vicious rumour?
>         Cheers guys.
>         Grunter1.
>
>
>         _______________________________________________
>         TheList mailing list
>         TheList at radiowiki.org.nz <mailto:TheList at radiowiki.org.nz>
>         http://radiowiki.org.nz/mailman/listinfo/thelist_radiowiki.org.nz
>
>
>     _______________________________________________
>     TheList mailing list
>     TheList at radiowiki.org.nz <mailto:TheList at radiowiki.org.nz>
>     http://radiowiki.org.nz/mailman/listinfo/thelist_radiowiki.org.nz
>
>
>
>
> _______________________________________________
> TheList mailing list
> TheList at radiowiki.org.nz
> http://radiowiki.org.nz/mailman/listinfo/thelist_radiowiki.org.nz
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://radiowiki.org.nz/pipermail/thelist_radiowiki.org.nz/attachments/20110803/e7d9dd95/attachment.html>