[TheList] Christchurch Ambulance now digital

Wed Aug 3 13:08:33 AEST 2011

Sorry Neill your quite right, my wording is confusing.

On Wed, Aug 3, 2011 at 2:59 PM, Neill Ellis <tgsnoopy at gmail.com> wrote:

> Ambulance have never been on ESA to the best of my knowledge. When I was in
> Telecom in the early 90's we installed their network on the then ES band
> which was later renamed ESB. As you state, the Old Police analogue mobile
> network was ESA and the new Digital network is in the ESB band where
> Ambulance has been for about 20 years.
>
> Regards,
>
> Neill.
>
>
>
>
> 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.
>>
>>
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