[TheList] Squawking Tones on Police Channel & High Frequency Tone on Channel

Sun Mar 20 09:38:10 AEDT 2022

It's actually the remote monitoring of the repeater sites.

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From: TheList <thelist-bounces at radiowiki.org.nz> on behalf of Darryl Healy <darryl0768healy at gmail.com>
Sent: Sunday, March 20, 2022 11:23:28 AM
To: thelist at radiowiki.org.nz <thelist at radiowiki.org.nz>
Subject: Re: [TheList] Squawking Tones on Police Channel & High Frequency Tone on Channel

Those tones are something to do with the linking with all the VTGs.

They happen every 4 hours at midnight and so on.

Someone will no doubt give a more technical explanation of them soon.

On Sun, 20 Mar 2022, 11:01 BJ, <bjcuizon151 at gmail.com<mailto:bjcuizon151 at gmail.com>> wrote:
Hi all,

Was in Dunedin recently and tuned in to police comms. Anyone know what those squawking tones on some police channels are? It doesn't sound like fire selcall but more like a really short (~1 sec) burst of what sort of sounds like a part of the old dial-up handshake.

Also, was listening to firecom and ambo thru the I-band link in Chch and on some link channels there is a really high pitched tone that is present when someone keys up. It can only be heard on a radio with no audio filtering/DSP as my Tait seems to cancel it out. Does anyone have an idea what this is as well?

Thanks in advance,
BJ
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