MGL Avionics User Forum

You have mounted the antenna on a piece of metal to act as ground plane ? This is required - if this is not done the antenna is much less effective and not a match - that causes the cable to go "live" and it becomes part of the antenna. Thanks Rainier, as far as I can see, neither of my GPS antenna...

First very important determination: Does this occur with engine running or not ? If it's fine with the engine off - your ignition system is interfering (it can create harmonics all the way to the 1.5Ghz the GPS signal is transmitted on). Look for "elms fires" Run the engine at night in the dark wit...

Hi All, Here are some Fusion 360 drawing with the dimensions of the Hall Effect Bracket for the Jabiru Gen 4 Engine. Whilst I was able to mill this bracket, many may not have the gear or want the cost of getting someone else to mill it. I reckon you could use 10mm x 25mm aluminum straight bar to mak...

First very important determination: Does this occur with engine running or not ? If it's fine with the engine off - your ignition system is interfering (it can create harmonics all the way to the 1.5Ghz the GPS signal is transmitted on). Look for "elms fires" Run the engine at night in the dark wit...

Swap GPS modules and see if the problem shifts with the module or mains with the EFIS. Thanks sparxfly for your advice, it sounds like the GPS is on it's own module board. So I will pull the instrument panel out of the plane, I am guessing there will be a cable (ribbon type) between the GPS module ...

Hi All, I am having an issue with my Voyager EFIS, the GPS keeps dropping in and out. It's never done it before and just started. I get an EFIS voice alert "GPS not available" and then a seconds or two later "GPS available" I can see on the EFIS screen the GPS has dropping out. I also have a second ...

Hi, One last thing you may ask, how did I wire up the NJK-5002c Hall Effect Sensor. Here is a bit of a drawing, I have not added a pull-up resistor, (between 1 and 2) this might be wrong, but I think this brand of Hall Effect sensor has one built into it?, as it does not seem to have any floating s...

Just to follow up on this post with a few pic's and words. I decided firstly to draw up a 3D drawing in Fusion 360 to suit the NJK-5002c Hall effect sensor, so I could test the sensor by having it mounted on the spare ignition coil mount on the Jab Gen 4 3300 engine. Well this Hall Effect sensor pa...

Hi, it's been number of weeks since my last post on this topic. It has taken some time to understand which type of sensors could give me the best RPM results with the Jabiru engine. Also what is the best way to mount the sensors to reduce engine vibration. Hall Effect Sensor are those sensors that h...

20201001_061906.jpgI have recently installed a single MGL bank servo connected to my Oddessy. It engages properly with option 1 from the AP menu - Engage Straight. It will not engage when I select option 2 - Engage Active Nav and gives me a message saying "pitch servo not available". As a way point...