[TheList] Trunking

Fri Feb 9 17:19:36 AEDT 2018

Yes it does, this will need to be very low latency because even at low 
bandwidths <1msps it will be very noticeable when shifting the waterfall.

This is why I have suggested openwebrx in the past, it might be slower 
for scanning spectrum but if you know you want police/fire, you set the 
center freq to say 75.5mhz and have a 2048msps bandwidth essentially 
giving a 74.5-76.5 waterfall. This will also work over a laggy ADSL 
connection with a slow upload speed. Would recommend using this over a 
VPN though (run on the same pi) as there is absolutely no encryption 
with openwebrx.

On 9/02/2018 11:44 a.m., Chris H - RadioWiki wrote:
>
> Actually:
>
> Solar Panel powered Raspberry Pi & Wifi link from a hill top and an SDR.
>
> SDR# has the ability to pick up an IP stream from an SDR dongle 
> doesn't it?
>
> On 2018-02-09 11:19, Ray Colvill wrote:
>
>> On the tuesday 6th visit i got Fire on 75.950 FM which is Lyttleton, 
>> (put in 75.400 for little river) and a few other towns. I got Ambo on 
>> 76.400 FM which i have as Banks peninsula as well.
>> It was a very quiet location to scan, got some marine traffic and 
>> cordless phones, not much else.
>> Reading he local rag i see they are bridging the outlet at Birdling 
>> flat to get access to the Busso road on the hill to the north.
>> Rayc
>>
>> On Fri, Feb 9, 2018 at 10:15 AM, Chris H - RadioWiki 
>> <radiowiki at archnetnz.com <mailto:radiowiki at archnetnz.com>> wrote:
>>
>>     Hey ya.
>>
>>     Honestly following all the Akaroa requests and answers over the
>>     last few weeks it sounds like Akaroa is in a black hole for RF
>>     and Scanning..
>>     The amount of traffic that would exist there sounds like its only
>>     when something is happening there........
>>     Perfect place for listening and transmitting HF though..
>>
>>
>>     I guess an IP remote controlled scanner in a better location
>>     streaming (encrypted and private) over the internet might be a
>>     better option if you want to listen to Anything.
>>
>>
>>
>>
>>     On 2018-02-08 17:56, Tim Devaney wrote:
>>
>>         Hi
>>         Thanks so much for the answers. Any idea of a Trunked system
>>         I can listen to in akaroa. Trying to find one but no luck
>>         Tim
>>
>>         On 8 Feb. 2018 17:53, "Scan CHCH" <scanchch at gmail.com
>>         <mailto:scanchch at gmail.com>> wrote:
>>
>>             RSM shows that frequency as TeamTalk @ Mt Pearce. 99%
>>             sure that is one of their MPT1327 Traffic channels
>>             relating to either ActionNet or Fleetlink systems. If it
>>             was the control channel you wouldn't hear any voice as it
>>             sounds like a machine gun and is solely a data channel
>>             gives the channel grants. Unfortunately there is no
>>             commercial scanner available that can trunktrack MPT1327.
>>             You can use a program like Unitrunker with the DVB-T
>>             dongle that you purchased but as far as your 996T goes it
>>             won't follow the conversations.
>>             Fire CHCH  frequencies listed on the Wiki are correct.
>>             The reason they don't work for you is coverage. Akaroa
>>             Fire don't use the Fire CHCH channel for that very
>>             reason. They operate on the Ex Police Analog Central
>>             Canterbury Channel. The frequency for that will be around
>>             75mhz. Best time to find out would be when they have been
>>             turned out. Once you find it you will hear almost zero
>>             police chatter on it as its only used for visiting units
>>             to the district that don't have a digital radio installed
>>             in their vehicle and you will only hear fire appliances
>>             from the Central and North Canterbury areas that have
>>             been turned out and responding to incidents.
>>
>>             On Thu, Feb 8, 2018 at 5:34 PM, Tim Devaney
>>             <timdevaneynz at gmail.com <mailto:timdevaneynz at gmail.com>>
>>             wrote:
>>
>>                 Hi all
>>                 So I'm learning how to program my 996t trunking
>>                 scanner I have no idea what I'm doing I have a
>>                 frequency which is 417.6625
>>                 I'm guessing this is the control channel I programmed
>>                 it in I can hear people talking generally one way and
>>                 it makes funny noises at the end of the conversation
>>                 I've tried programming it and as a system but I need
>>                 tgid can anyone explain this to me I'm in Akaroa also
>>                 if anybody knows the Christchurch fire frequency that
>>                 I can pick up in Akaroa would be great I have tried
>>                 the ones on radiowiki but they don't seem to work I
>>                 really want to learn how to get the full potential
>>                 out of my scanner but it's all of the above my head
>>                 thanks kindly.
>>                 Cheers
>>                 Tim
>>
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