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 DSC Radio idea.		  New Topic  Topic Locked
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Prospector
Master Marine Consultant

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Canada
3159 Posts
Initially Posted - 10/31/2008 :  14:50:24  Show Profile  Visit Prospector's Homepage
Lets say you are in a race, and as the high PHRF boat are at the back of the fleet, but still in good standing. If you have a DSC radio, could you use it to your advantage to plot th etracklogs of the rest of the fleet? Here is what I am thinking.

With DSC, you can plug in the call signs of other boats and then be able to find their position with the radio. If you plugged in the call signs of your friends, your radio should be able to locate them, and give you their positions on the lake (provided their GPS is plugged into their radio.) Has anyone come across a way to repeatedly peel those position reports off the radio and plot them on a chartplotter (or laptop) to ocme up with tracklogs of the other boats in the vicinity?

In our race scenario, you would be able to see which side of the course was faster by the boats ahead of you, where the currents were giving a boost, and who had the greatest advanctage, possibly down to very fine detail.

Someone has to have come up with this technology. I know Rally car drivers are doing it using Ham radios.
"Iris"
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 10/31/2008 :  23:10:56  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Prospector</i>
<br />...With DSC, you can plug in the call signs of other boats and then be able to find their position with the radio...<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">...if they push the Distress button or connect with you on a DSC call. What are the odds of either? Your idea could have some value in a one-design match race--like the Americas Cup (if you can get them to answer your call... "Alinghi, Alinghi...").
Edited by - Dave Bristle on 10/31/2008 23:14:49
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Prospector
Master Marine Consultant

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Canada
3159 Posts
Response Posted - 11/01/2008 :  11:45:21  Show Profile  Visit Prospector's Homepage
I thought you could poll the boats on your call list for their positions??
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 11/01/2008 :  12:15:55  Show Profile
If they've set their radios to respond. That would certainly be generous of them... (I think I'd set mine to manual in a race.)
Edited by - Dave Bristle on 11/01/2008 12:16:51
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JimB517
Past Commodore

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USA
3285 Posts
Response Posted - 11/01/2008 :  22:25:40  Show Profile  Visit JimB517's Homepage
using outside information not freely available to all racers is breaking the Racing Rules of Sailing.
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Prospector
Master Marine Consultant

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Canada
3159 Posts
Response Posted - 11/02/2008 :  13:09:32  Show Profile  Visit Prospector's Homepage
So then I guess this begs the question of whether DSC polling is available to all competitors? OK I won't try to write up some code to use this info, but I just thought it might be an idea worth exploring.
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SailCO26
Captain

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USA
457 Posts
Response Posted - 11/04/2008 :  08:56:48  Show Profile  Visit SailCO26's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Prospector</i>
<br />So then I guess this begs the question of whether DSC polling is available to all competitors? OK I won't try to write up some code to use this info, but I just thought it might be an idea worth exploring.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">Rather than a single boat use it during the race (illegal, IMO), have the RC log the data for all boats. Then use it for a fleet-wide post-race analysis. Great for bragging rights for the winners and a good learning opportunity for others.

But then I'm a techie, and things like that interest me..
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