GPS antenna splitting? Yes, but…

Ben Ellison

Ben Ellison

Panbo editor, publisher & chief bottlewasher from 4/2005 until 8/2018, and now excited to have Ben Stein as very able publisher, webmaster, and editing colleague. Panbo is going to the next level in 2019 and beyond.

4 Responses

  1. Dan (b393capt) says:

    Flush mounts … I did this. Be careful where you place it so that people don’t sit on it and block the signal, setting off anoying alarms on my chartplotter.
    To me … the best GPS antenna is one you can mount inside your cabin without any penetrations in the deck.

  2. robert says:

    On mast vs deck mounts. I have found, for GPS and Sat Radio, mounting the antenna atop the mast (for a sailing boat) can actually be worse than mounting on deck or stern pulpit. Reason is signal loss over such a long cable seens to reduce performance and offset any gains made from “full view of the sky”. And, that is using the officially mfr sanctioned cables.
    Better if it can be installed midway up on a spreader or something.
    Also, I have a Garmin GPS-17 (HV version) hockey puck sensor mounted atop our 35 foot mast. Works great, but, GPS-17 is so sensitive that, in lumpy conditions, the boat on the nav software bounces around more due the extreme motion at the top of the mast.

  3. mike says:

    I’ve got the above GPS splitter. Actually I have several of them.
    while they aren’t cheap, they are the best ones out there and work great. they are worth the money.

  4. catamaran guy says:

    Not sure why you would want to put all you eggs in one basket,you lose the one antenna and everything is down.
    I prefer redundancy,same reason I go for separate ais and vhf antennas,if the splitter screws up,you lose both functions.
    The Garmin 17xhvs is so sensitive it comes with an underdeck mounting so you can keep it inside.(ahmm not in a steel boat of course.)
    Re mast mounting….most manufacture documentation say do not put it on top of the mast,for exactly the reasons you found out.
    Re cable length…does matter with strictly an antenna,but most are receivers now,sending serial data,length of cable doesn’t matter.

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