Test transmissions on VHF DSC calling channel 70 should be made to another VHF DSC radio by using a routine individual call to their Maritime Mobile Service Identity (MMSI).
For VHF DSC radios equipped with the Test Call feature, test transmissions should be made to the US Coast Guard MMSI 003669999 to receive an automated VHF DSC test response. You must use the “Test Call” category of your radio because “Individual” category calls to this address will not receive an automated response. For older radios not having a test call capability, testing can only be performed by using a routine individual call to their Maritime Mobile Service Indentity (MMSI). You can test DSC with a buddy. Do *not* send ALL SHIPS. Someone did that around here and generated a ton of radio traffic trying to figure out WTF was going on. Joe Della Barba j...@dellabarba.com From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of bobmor99 . via CnC-List Sent: Friday, January 15, 2016 1:17 PM To: cnc-list@cnc-list.com Cc: bobmor99 . <bobmo...@gmail.com> Subject: Re: Stus-List Testing DSC Hello All, Thanks for the replies. I am aware of the need to get an MMSI number and will be starting that process shortly. I'm uncertain at this time whether to get the quick and free BoatUS MMSI number or to go the slow, federal, not-free route - which would mean the DSC stuff could be used in non-US waters. (That's just a choice for US boaters and I'll bring it (BoatUS vs. federal issued MMSI) up as a separate Stu's List topic.) I was more interested in testing the built-in AIS and DSC functions of the radio. Supposedly, if an AIS target was displayed on the radio's small display, I could select it and start communicating with it digitally on channel 70 and audibly on channel 16(?). But I don't want to somehow accidentally give anyone the erroneous impression that I'm in distress. I'm also wondering if anyone has tested the "All Ships" DSC distress signal just to verify that it's working. --Bob M Ox 1976 33-1 Jax, FL
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