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Having anything on land not properly licensed (usually a marina or port facility) broadcast on marine VHF is illegal. Setting up a DSC receiver in your car is fine, and broadcasting your position from a marine VHF with DSC while on the kayak is fine.<br><br>Even though marine VHF will have the same issues with range as 2m, the 300 baud transmission mode of DSC may be more likely to be received cleanly. <br><br>A handheld VHF with DSC costs around $250, but then you'd need to put together the interface to take the receiver's output and retransmit on APRS. <br><br>One real benefit of DSC is if you have an issue, there are likely to be far more marine VHF receivers around listening than there are APRS.<br><br><br><br>AIS is a different system from DSC.<br><br>Kevin<br>KB3PLX<br><br>--Forwarded Message Attachment--<br>From: hellan@acm.org<br>To: aprssig@lists.tapr.org<br>Date: Thu, 28 Aug 2008 16:03:02 +0200<br>Subject: Re: [aprssig] more kayak and aprs<br><br><pre>jimlux wrote:<br> <br>> I've just started looking into this, but it looks like the VHF/DSC is <br>> "on button push", not automatic, as in APRS. There appears to be some <br>> sort of "pull" or query mechanism where one VHF/DSC station can ask for <br>> the position of another, so in my scenario, the station in the car would <br>> be doing this. However, there's probably some legal prohibition against <br>> automated actions like this.<br> <br>Sounds like you're looking for AIS class B. (AIS class A is for commercial <br>shipping). Could be a bit bulky for a kayak, though, and APRS would be much <br>cheaper.</pre></body>
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