[TheList] APCO25

Sat Apr 23 16:09:02 AEST 2011

Thanks Andy.

As the recruitment add said - "better work stories"
Please keep those coming :-).

Rick. 

-----Original Message-----
From: thelist-bounces at radiowiki.org.nz
[mailto:thelist-bounces at radiowiki.org.nz] On Behalf Of Andy
Sent: Saturday, 23 April 2011 17:31
To: thelist at radiowiki.org.nz
Subject: Re: [TheList] APCO25

If that catches on it would be a great unintended benefit of the digital
radio system.
Imagine, all you have to do is press the mic button and every speeder within
range hits the brakes!!

Reminds me of bit of some harmless fun indulged in by some young constables
back in the early 80s when space invader machines were the latest attraction
at the local takeaway.
These machines were a magnet for the local "yoof" on a Friday night, before
they moved on to their normal activities of syphoning gas and roaring around
pissed in mk2 Cortinas. It didn't take long to establish that the radio
suppression on these devices was not very effective to say the least. A
quick burst of 25 watts of carrier at around 78MHz from the innocent white
HZ Holden parked across the road was sufficient to blank the screen and
reset the machine so it said  "Game Over - Insert 20 cents ".  It was
amazing how much money they would feed it before realizing that something
was going on, especially if you gave them a couple of minutes of play before
hitting the button again. Every time they complained to the takeaway guy it
worked perfectly when he tried it. They never figured it out.

Andy

 -----Original Message-----
From: Mike Barnes (ZL3TMB) [mailto:zl3tmb at ihug.co.nz]
Sent: Friday, 22 April 2011 10:35 a.m.
To: zl1cop at qsl.net
Subject: RE: [TheList] APCO25

I know to slow down, and keep the $$ in my pocket :) 

-----Original Message-----
From: Andy [mailto:zl1cop at qsl.net]
Sent: Friday, 22 April 2011 12:04 a.m.
To: 'Mike Barnes (ZL3TMB)'
Subject: RE: [TheList] APCO25

"A simple P25 buzz warns of the police near by....."

And then what?

-----Original Message-----
From: Mike Barnes (ZL3TMB) [mailto:zl3tmb at ihug.co.nz]
Sent: Thursday, 21 April 2011 11:00 p.m.
To: thelist at radiowiki.org.nz; zl1cop at qsl.net
Subject: RE: [TheList] APCO25

Hmmmmm, so if I enter all these frequency as mobile inputs in my scanner
with a very poor antenna.
I've just created the best radar detector ever :)

A simple P25 buzz warns of the police near by.....

http://www.rsm.govt.nz/cms/pdf-library/resource-library/publications/pib-23/
PIB23-Issue-6.pdf

The simple ideas are the greatest.. :)

Have fun.....

Andy wrote:
> Current state of play:
>
> Following freqs in the Auckland area observed as active with APCO P25 
> trunking data:
>
> 141.1500
> 141.1750
> 141.2625
> 143.2750
> 143.3500
> 143.3625
> 143.3750
> 143.3875
> 143.4375
> 498.5125
> 498.5250
> 498.5625
> 498.6375
> 498.6625
> 498.6750
> 498.6875
> 498.7000
> 498.8125
> 498.9875
>
> cheers
>

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