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Matt Dralle's RV-8 Project
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Date: 4-23-2009
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Number of Hours: 3.00
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Manual Reference:
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Brief Description: Ameri-King AK-451 ELT w/ GPS Input - Part 2
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But here's the problem. It turns out that the AK-451 ELT GPS serial input will ONLY accept 9600 baud... So, not to be out done, I did some research and discovered that the little GPS modules from GRT are actually just a Garmin 15H GPS module inside (had to take them a part to figure that out, however.)
Garmin 15H GPS Module I also found a utility on the Garmin web site that allowed me to set the output baud rate to 9600 (and configure a bunch of other options on the 15H GPS as well) on the GPS module.
GPS 15H Configuration Software So now I can set the input to the HX at 9600, which means that the OUTPUT will be at 9600 too. I reconfigured all the other devices from 4800 to 9600 and they all worked great at the new speed. Whew, so far so good. Took about a full day, by the way, to figure that all out...
So then I get the 9600 baud data from the HX going to the AK451 (the NMEA0183 format that everything in the world supports), but find that it doesn't seem to be syncing up to the data. "WTF?", I think to myself. How can this be that hard?
So I study the incredibly poorly written (btw) AK-451 ELT manual for a couple of hours and find where it says that "only Aviation RS-232 format is supported". Oh great..., Aviation Format? Really? Well, fortunately (it would seem), the HX has both NMEA0183 and Aviation output formats available. If I was trying to connect directly to the GPS modules (NMEA0183 only) with the AK-451 ELT I'd of been completely out of luck!
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ELT Mount - .063" Skin Stiffener
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Skin Stiffener Riveted On - Platenuts For Mouting
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Skin Stiffener Riveted On
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Copyright © 2008-2024 Matt Dralle. All Rights Reserved.
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