Cruise ship comms

Re: Cruise ship comms

Postby SKEYGEN » Thu Dec 29, 2011 8:36 am

Garry wrote:they are a worldwide shipping allocation


Actually these are FCC allocated for US flagged vessels, rather than being allocated internationally by ITU like the VHF channels, but vessels flagged from other countries often also use them.
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Re: Cruise ship comms

Postby matthewn1983 » Thu Dec 29, 2011 1:06 pm

Seen bearcom mtp850 on princess cruise staff so far
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Re: Cruise ship comms

Postby cartman » Thu Dec 29, 2011 1:49 pm

matthewn1983 wrote:Seen bearcom mtp850 on princess cruise staff so far


MTP850 = TETRA - using Motorola's 800Mhz rental sites while in Sydney?


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Re: Cruise ship comms

Postby matthewn1983 » Thu Dec 29, 2011 2:08 pm

I think so, that was before customs and sign on but Ill have a look before I turn my phone off.
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Re: Cruise ship comms

Postby matthewn1983 » Wed Jan 11, 2012 8:48 am

2 ships in Sydney this morning. If anyone gets a chance the pager freq for the sea princess is 469.6500, I could not decode it on pdw? All tones for the ship were 203.5 and 457.x to scan.
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Re: Cruise ship comms

Postby matthewn1983 » Wed Jan 11, 2012 9:54 pm

Sea Princess
(seen PRO5150 and PRO7150)

457.5625 203.5 Hz (bridge ops)
457.2000 203.5 Hz (encrypted, most likely security channel)
469.6500 n/a (pager, wouldnt decode on PDW, will upload photo of pager when i get a chance)
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Re: Cruise ship comms

Postby citabria » Wed Jan 11, 2012 10:48 pm

what kind of modulation/protocol was 457.2000 using?

Since theres a tone I'm assuming it was frequency inversion?
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Re: Cruise ship comms

Postby matthewn1983 » Thu Jan 12, 2012 8:38 am

Heres a photo of one of the crew with 2 pagers - http://i.imgur.com/3VraE.jpg

citabria, was just going through some samples, actually sounded alot like scada, probably shouldve recorded it when i heard it, but it only ever came up for about 5 minutes and never heard it again.
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Re: Cruise ship comms

Postby centralcoastscanman » Wed Apr 11, 2012 10:54 pm

Those pagers/duress alarms bring back memories.

They double as a pager and duress alarm or can do.

They are ASCOM pagers but distributed in Australia by Integrated Wireless, who make some cool stuff if its setup properly and people are trained in how to use it properly

Website address is www.integratedwireless.com.au

Upon quickly looking at their webiste they do use POCSAG as one of the protocols. I was always meaning to try and decode my hospitals paging system when i worked for them but never got around to it
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Re: Cruise ship comms

Postby Garry » Wed Apr 11, 2012 11:07 pm

you will find sea princess on a combination of the freqs I posted earlier

457.5250 467.7500 467.5250
457.5500 467.7750 467.5500
457.5750 467.8000 467.5750
457.6000 467.8250 467.5000

they will use ctcss or dcs..

Im keen to know what you discover
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