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  #11  
Old 11-16-2006
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"He can monitor SSB frequencies and you can listen on Ham frequencies..."
Good point, but the ham is not allowed to BROADCAST, only to call and speak with specific stations. (Aside from CQ calls.) I'm not certain if the SSB user is allowed to BROADCAST, again aside from CQ calls, but I didn't think that was allowed.
Iridium would seem like the best way to communicate without both parties being *trained* or experienced radio operators in the same service.

Most hams would be totally unwilling to hold regular contacts with an unlicensed party, they can lose their licenses "forever" as well as being fined $10,000 per incident. That's a lot to risk versus the cost of an Iridium account, or placing a high seas radiotelephone call.
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  #12  
Old 11-17-2006
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AFAIK, there is no law saying that a HAM can not contact an SSB user on a call. The law says that the SSB-user can not reply using HAM frequencies, but AFAIK there is also no law stating that the SSB user can't call a HAM user, provided he is on SSB-frequencies. The reverse should also hold true.

If you know of a law that prohibits this, then I'd love to see a citation.
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  #13  
Old 11-17-2006
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Great thread guys!
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Old 11-17-2006
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Sailingdog. The rule citation that you are looking for is in Part 97 of the FCC rules. Specifically
§97.113 Prohibited transmissions.

This prohibits any form of broadcasting or one-way transmissions. Since the marine station cannot respond in the amateur service it is considered a one-way transmission.

The full set of FCC rules is available on the ARRL web site:
http://www.arrl.org/FandES/field/reg...s/news/part97/

Graham
AA2WR
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Old 11-17-2006
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A Few Clarifications

Guys and gals...

A couple of clarifications....


1. While it is true that anyone may LISTEN on any frequency (except cellular phone channels), it is NOT TRUE that you may transmit in one service (e.g., ham) and carry on two-way conversations with someone in another service (e.g., the marine service), except in a bonafide emergency or specially-designated events....like military stations which communicate with ham stations on special event days. The reference for this rule is in Part 97.111 of the FCC rules.

SO, OK to LISTEN, NOT OK to transmit in cross-service mode.

2. The term "SSB" is often misused by non-hams. SSB refers to "single-sideband". This is a form of emission (actually, a form of AM emission), and is NOT particular to the marine service, the amateur service, the aircraft service, or any other service. In fact, with the exception of the aircraft service, most HF transmissions these days are in SSB. Hams use SSB on the ham bands, just as do mariners using SSB on the marine bands.

3. USB vs. LSB operation. USB is a form of SSB, referring to the UPPER SIDEBAND. USB is used in all marine SSB transmissions.

LSB refers to the LOWER SIDEBAND. It is used by hams on the lower bands (40, 75, 160, etc.), and by some other services as desired. It is NOT used by boats in the marine service.


Bill
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  #16  
Old 11-17-2006
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One Further Thought

Even if it were legal to communicate between the ham and the marine services (which it is NOT), in practice cross-band and cross-service operation requires a skillset which most operators of marine SSBs are not likely to have.

BOTTOM LINE: forget it, except perhaps for having your wife listen to a net like Herb's or the maritime mobile net.

Bill
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Old 11-17-2006
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Bill you have also WINLINK (airmail) witch is free for Ham licensee to have internet acces on board
still need a computer -a modem (pactor II or III) a rig (ham radio) and most of all a tunable antenna (insulated backstay) for reliable contacts
other than that each counties have reciprocity with your ham licence
(good thing !)
sea U
73 -88
mario VA2MCN
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  #18  
Old 11-17-2006
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Good to know... the other choice is to get your wife an SSB setup and then she can act to relay information for you via telephone.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
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—Cpt. Mal Reynolds, Serenity (edited)

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  #19  
Old 11-17-2006
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Guess what I just discovered. Look at the bottom of this page for "Similar Threads" (which I have ignored until now). The cited article by Kathy Barron has lots of good information for those who have been following this thread to get more info about marine ssb vs. ham ssb.
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Old 11-18-2006
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Hey all,
Thanks for the valuable info. I was a broadcast engineer in S/E AK, and as I said, I understand RF transmission, and the terms USB/LSB and what a sideband is, etc. What I was looking for was info re: the practical uses of the equipment, and its (in actuality) functionality. There is hardly any info in the users' manual, and not much out there re: the interface of the several bands. I gather there is also a license that would allow a Ham operator transmit on the marine bands? Something like a ship to shore, maybe? The issue I have with Iridium is the initial cost of the handset, not the cost of time or bandwidth. Having just purchased an Icom, I would like to be able to understand its limitations and its utility. Thanks again!
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