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Old SIMRAD Autopilot heading reference - firmware EEPROMs (Or alternative heading sensor ideas for AP11/J300X)

 

Marcus H
(@marcushember)
New Member
Joined: 4 weeks ago
Posts: 1
Topic starter  

Hi,

A long shot this! I've got a really sound Simrad AP11, which works well but I want to improve the heading ref with a modern NMEA 0183 rate compass. It has a j300x interface box, and should be able to accept NMEA heading input however it is an older firmware version (1v6). I understand that I need the 1V8 firmware eeprom to make this work; as my ideas as to where I can find it greatly appreciated.
 
I've tried to find a SIMRAD Rate compass which uses the old 2-wire PWM interface however they appear to be as rare as hen's teeth and I can only find later models, or the Fluxgate-only ones.  I think it might be able to accept a ROBNET (?) network compass, but not been able to track down the right version of that either - so I'm down to an NMEA one and finding the right firmware.
 
I know it is a long shot - the thing works fine, just needs a more stable compass......
 
Thanks

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