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Taxi IDs

Posted: Sat Jul 24, 2010 7:24 pm
by criten
Just wondering if anyone could help me identify this sound. My goal is to decode these tones.

Its from my local taxi company.

These tones are always appended to transmissions from their cabs.

I'm told it transmits the car ID number. They have a unit of some sorts in their cabs which is attached to the radio. I'm also told they transmit various status codes that indicate what they're up to.

http://www.megaupload.com/?d=H34XBJIP

Re: Taxi IDs

Posted: Sat Jul 24, 2010 7:34 pm
by citabria
Sounds like Motorola MODAT.

Given this is "scanSydney" if you posted the frequency and its location it might be nice....

Re: Taxi IDs

Posted: Sat Jul 24, 2010 7:38 pm
by criten
77.7375MHz CTCSS 123Hz Katoomba

I was thinking it was MODAT... now to find a decoder.

Re: Taxi IDs

Posted: Sat Jul 24, 2010 8:07 pm
by soupbones
Never heard of one that does MODAT. Not to say thats its not out there of course.

Re: Taxi IDs

Posted: Sun Jul 25, 2010 12:26 am
by Longreach
hi all, sure its not just selcall? the cabs down here do the same, and there only running simoco srm9000's
cheers
Matt

Re: Taxi IDs

Posted: Sun Jul 25, 2010 11:39 am
by Sigint
criten wrote:Just wondering if anyone could help me identify this sound. My goal is to decode these tones.

Its from my local taxi company.

These tones are always appended to transmissions from their cabs.

I'm told it transmits the car ID number. They have a unit of some sorts in their cabs which is attached to the radio. I'm also told they transmit various status codes that indicate what they're up to.

http://www.megaupload.com/?d=H34XBJIP
Possibly a proprietary format from Raywood Communications equipment, which is fairly popular in the Taxi Industry.

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Sigint