Swan taxi data channels

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macca1024
Posts: 7
Joined: Sun Jul 21, 2019 7:03 pm
Scanners and Receivers: RTLSDR
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Swan taxi data channels

Post by macca1024 » Sun Jul 21, 2019 7:57 pm

Hello all
I've been scanning around the band on my SDR and came across a data transmission from Swan taxis. I assume it's for those in car units they use. Has anyone written a decoder for it or aware of who makes the equipment or any docs on the signal standard? Thanks.

macca1024
Posts: 7
Joined: Sun Jul 21, 2019 7:03 pm
Scanners and Receivers: RTLSDR
LimeSDR

Re: Swan taxi data channels

Post by macca1024 » Thu Jul 25, 2019 4:46 pm

Sorry, it was actually Black and White taxis, not swan. On 488.500 Mhz out of QV1

https://web.acma.gov.au/rrl/assignment_ ... ID=1211735

numloxx
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Re: Swan taxi data channels

Post by numloxx » Thu Mar 05, 2020 9:51 pm

Get DSDPlus and use LRRP

numloxx
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Re: Swan taxi data channels

Post by numloxx » Thu Mar 05, 2020 9:55 pm

You sure it's data?
10K1F3E =
https://fccid.io/Emissions-Designator/10K1F3E

macca1024
Posts: 7
Joined: Sun Jul 21, 2019 7:03 pm
Scanners and Receivers: RTLSDR
LimeSDR

Re: Swan taxi data channels

Post by macca1024 » Fri Mar 06, 2020 8:35 pm

Sounds like it, to me it looks like some sort of high speed FSK. The low-high transition could be for frame sync.

Image

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