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cal40john 24-03-2011 20:12

many DSC alarms, or false alarms
 
In another thread people were talking about too many DSC distress alerts on their radio, many of them false alarms. I haven't had any DSC alerts on my radio in the Puget Sound area, false or real. I haven't been out very much the last year or two though. Are there specific regions where this has been a problem? Has anyone heard of DSC problems in the PNW? Do we just have very few people that have bothered to opt in and set up their DSC here?

John

SvenG 24-03-2011 20:20

Re: many DSC alarms, or false alarms
 
We've only had one alarm (false) in the 2+ years that we've had a DSC capable radio.

We're in the Los Angeles area, down by LA Harbor, so it isn't that quiet.



-Sven

JiffyLube 24-03-2011 21:20

Re: many DSC alarms, or false alarms
 
I haven't heard anything at all down in San Diego for the last three + years we've had the DSC VHF.

Mercz 29-03-2011 07:36

Re: many DSC alarms, or false alarms
 
1 Attachment(s)
Sailing 6 or 8 weeks each year at the West Coast of Europe (France, UK) and the Mediterranean, and having a DSC capable VHF always turned on, I never received a Distress alert (false or true).
However, back in 1999 or 2000 sailing in North Brittany (close to Alderney) we received a Distress Relay call from Brixham Coastguard about a MOB situation (see enclosed picture). The DSC alert was followed by the Mayday Relay message, as it should be.
I was quite surprised to receive such a call on a Class D VHF-DSC set, as it was not even mentioned in the User's Guide, that you could receive such call.
Coming back to false distress alerts, I think the statistics are showing much more false alerts from EPIRBs, than from VHF-DSC radios.
Anyone has good figures for DSC and EPIRB Distress alerts (true or false)?

Hydra 29-03-2011 13:48

Re: many DSC alarms, or false alarms
 
Etel MRCC (south Brittany) 2010 report:
Flares: 53 (43 false alerts)
Other signals: 2 (no false alert)
EPIRB: 26 (22 false alerts)
Inmarsat C: 5 ( 4 false alerts)
DSC 9 (5 false alerts)
Indeed, there are much more false alerts from EPIRBs than from VHF-DSC radios.

Alain


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