[TheList] Fire UHF incident ground communications

Thu Nov 23 11:03:38 AEDT 2017

We use to get it bad down south untill tx frequency was changed on one of the vtg channels.

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From: TheList <thelist-bounces at radiowiki.org.nz> on behalf of DogSecurity - Richard <richard at dogsecurity.co.nz>
Sent: Thursday, November 23, 2017 11:50:21 AM
To: thelist at radiowiki.org.nz
Subject: Re: [TheList] Fire UHF incident ground communications

Just on the skip issue you mentioned.. The problem with the skip/ducting on ESA (I'd put money on that being the offender, rather than UHF) is that the police (and fire as they're in bed together) don't use CTCSS tones, so the repeater receiver naturally opens up to everything.

Unfortunately that's poor initial design on Police part, to add tones after the fact basically can't happen logistically... every RT and repeater needs to be reprogrammed at the same time to avoid downtime. Doing it could be done slowly, add the tones to RT TX first, then add the tone to the RX of the repeater. Obviously you'd have to see if there's a tone on the Aussie TX and not reuse that here (that'd really be RSMs domain) Would also help with that clown down Levin ways with his crappy Baofeng or whatever ham radio that he shouldn't have, transmitting on the police channels.

Over the last few years it seems to be less of an issue on Ham1/Waikato Rural at least as more Aussie emergency services are going UHF/digital etc. But also remember 76megs is more susceptible to noise than VHF/UHF frequencies. Also helping the fact of people moving away from ESA/A-band is Tait is the only manufacturer making that equipment anymore.

Richard
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Sent from a mobile device. Please excuse my brevity, punctuation and spelling.

On 23 November 2017 10:33:16 AM NZDT, Shane Vickers <senavick2 at gmail.com> wrote:
ESC band in this topic,  The original poster mentioned Area 22. Can I confirm where this is?  No point getting excited if they are rolling out in Wellington!
Auckland is using F Band high to assist with skip issues from Aussie many moons ago..

I am assuming Auckland is Area 22 as they have UHF systems in play..   I am could be so wrong.....

On Thu, Nov 23, 2017 at 9:45 AM, Mike Bailey <tahiini at gmail.com<mailto:tahiini at gmail.com>> wrote:
My apologies - no regular operational channels. Yes some HF and airband stuff is listed, but good on ya if you've heard anything operational on it... ever.

On Thu, 23 Nov 2017 at 09:36 Chris H <radiowiki at archnetnz.com<mailto:radiowiki at archnetnz.com>> wrote:

When you say no police frequencies at all I beg to differ on that statement:

Here is just one search I did for Police - like page 2 of 5 or something.

Previous        Next
Licence ID [Descending]         Licence No [Descending]         Licensee [Descending]   Channel [Descending]    Ref.Freq. (MHz) [Descending]    Location [Descending]   Grid Reference [Descending]     Licence Type [Descending]       Status
19203   96116   NEW ZEALAND POLICE      ACX45   119.100000      TAURANGA POLICE STATION BD37 795250     Aero Base (Off Route)   Current
23895   97565   NEW ZEALAND POLICE      ACX45   119.100000      MT CARGILL      CE17 101239     Aero Base (Off Route)   Current
23895   97565   NEW ZEALAND POLICE      ARX52   131.300000      MT CARGILL      CE17 101239     Aero Base (Off Route)   Current
24086   125062  NEW ZEALAND POLICE      ACX45   119.100000      SUGARLOAF       BX24 717721     Aero Base (Off Route)   Current
28430   92397   NEW ZEALAND POLICE      ACX45   119.100000      NEW PLYMOUTH POLICE STATION     BH29 927760     Aero Base (Off Route)   Current
28430   92397   NEW ZEALAND POLICE      ACX5    118.100000      NEW PLYMOUTH POLICE STATION     BH29 927760     Aero Base (Off Route)   Current
28430   92397   NEW ZEALAND POLICE      ARX52   131.300000      NEW PLYMOUTH POLICE STATION     BH29 927760     Aero Base (Off Route)   Current
28430   92397   NEW ZEALAND POLICE      ACX41   119.000000      NEW PLYMOUTH POLICE STATION     BH29 927760     Aero Base (Off Route)   Current
29066   92399   NEW ZEALAND POLICE      ACX45   119.100000      STRATFORD POLICE STATION        BJ30 105448     Aero Base (Off Route)   Current
29066   92399   NEW ZEALAND POLICE      ARX52   131.300000      STRATFORD POLICE STATION        BJ30 105448     Aero Base (Off Route)   Current
29066   92399   NEW ZEALAND POLICE      ACX5    118.100000      STRATFORD POLICE STATION        BJ30 105448     Aero Base (Off Route)   Current
29066   92399   NEW ZEALAND POLICE      ACX41   119.000000      STRATFORD POLICE STATION        BJ30 105448     Aero Base (Off Route)   Current
30121   126153  NEW ZEALAND POLICE      ACX45   119.100000      MAUNU MT        AX30 113444     Aero Base (Off Route)   Current
30121   126153  NEW ZEALAND POLICE      ARX52   131.300000      MAUNU MT        AX30 113444     Aero Base (Off Route)   Current
31640   92401   NEW ZEALAND POLICE      ARX52   131.300000      HAWERA POLICE STATION   BK30 103172     Aero Base (Off Route)   Current
31640   92401   NEW ZEALAND POLICE      ACX45   119.100000      HAWERA POLICE STATION   BK30 103172     Aero Base (Off Route)   Current
31640   92401   NEW ZEALAND POLICE      ACX5    118.100000      HAWERA POLICE STATION   BK30 103172     Aero Base (Off Route)   Current
31640   92401   NEW ZEALAND POLICE      ACX41   119.000000      HAWERA POLICE STATION   BK30 103172     Aero Base (Off Route)   Current
32224   135095  NEW ZEALAND POLICE      ARX52   131.300000      PAPAROA BT19 636042     Aero Base (Off Route)   Current
32311   97621   NEW ZEALAND POLICE      ARX52   131.300000      AUCKLAND        BA32 569204     Aero Base (Off Route)   Current
Previous        Next

On 23/11/2017 09:07 AM, Mike Bailey wrote:

RSM work in mysterious ways. You'll notice they don't list any Police frequencies at all. I wonder if this falls under the same sort of category - that its RSM approved (lets face it, Fire wouldn't go rogue on frequencies), and its just not published for privacy and security of communications?

On Thu, 23 Nov 2017 at 08:57 Grant Carroll <grant.carroll at xtra.co.nz<mailto:grant.carroll at xtra.co.nz>> wrote:

Hi all,

I'm a bit confused as well.!

On the RSM website the frequencies assigned to Fire and Emergency New Zealand between 492.21875MHz and 497.19375MHz are shown as "Land Mobile - mobile transmit" and the repeater frequencies don't start until 498.800MHz. So how are the lower frequencies being used as "portable frequencies" for incident ground communications?

Cheers.

Grunter1.

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