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  1. Electronics
    Hi everyone, I have a GPS antenna TOPGNSS like the one that is in this link (24.3US $ 10% OFF|TOPGNSS RS232 GPS marine GPS receiver antenna module NMEA 0183 baud rate 4800 voltage 12V cable is 5 meters.|GPS Receiver & Antenna| - AliExpress) and I'm trying to use the antenna for my Simrad...
  2. Electrical Systems & Solar
    Hello you all so I just contacted Ritchie because I am sending my old SP-5 Global compass to get refurbished. He ask me to write in with my information if I wanted a red or green light on it. I asked him what is the difference he stated personal preference. So my question is for you all that...
  3. General Discussion - Sailing Related
    Hi Folks, I'm wondering if any of you expert navigators out there could solve a simple geometry problem for us... A person sets sail from one side of the Earth to the exact opposite along the equator, aiming for a very small port, but they are off course by just one degree the entire voyage...
  4. Seamanship & Navigation
    I have a new boat with a pair of Plastimo Offshore 135 compasses. They seemed off by a considerable amount so I researched adjusting them. I followed the instructions where by you follow a known North course and zero the compass, then head south and calibrate it to half of the remaining...
  5. Gear & Maintenance
    Anybody ever hear of the magnets falling loose from the card on a Ritchie compass? Ritchie was good about reparing it, but I'm trying to learn whether it's been a common problem. Having your compass suddenly become useless at the wrong time can wreck you. My boat has been on the hard all season...
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