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Go ahead with the latest update, no need to do the in between ones. Just follow Dynon’s update instructions, particularly about making sure you don’t lose power to the Dynon when updating.

Mike, what engine is this on ? If it’s a Lycoming then you most likely will have to drill & tap the carb body near the Venturi area - mr google is your friend.

If it’s the VDO type (dull grey body approx 2” diameter) then I’d replace the fuel pressure sensor, they will fail sooner or later - that’s why I always have a spare in stock for customers.

You could try adding the "filtered" adapter to the 25pin dsub connector however the better solution is to return the EMS unit to Dynon & they will modify it - contact support direct. I'll pm you.

Hey guys, lets get back to the real question, not how much you do or don't know about antennas etc - I'd suggest if you don't have anything useful to add re troubleshooting the original posters problem, then start another topic. He needs focus, not antenna design theory ;) .

The OP is trying to fix a problem, not discussing size etc of ground plane which has no troubleshooting impact here.:rolleyes:

It's possible that it is a connection that's at fault here if the last thing you did was just add the ground plane - Check the pin in the BNC fitting, make sure it is nearly flush with the body at the opening - in other words not retracted preventing a solid contact. Also check the fitting in...

kerstens, I have been in contact with Peter however, as this is more about your airframe, rather than Dynon 'issues', I will pm you with some information.

There is a lot going on here so there are 2 things I would do -- 1 - Make sure you are seeing all the Dynon units on the System Status screen - if not, then do a system configuration. that may fix it & 2 - Perform the Zero airspeed calibration as described in the install manual.

Not sure why having the switch would be a problem then once the unit is charged, just make sure it is fully charged & then, when you do want to turn it on, just flip the switch. It already is charged anyway & turning it on allows the system to keep it charged.

Dynon can answer that, however why not have a simple switch in its power input in the meantime ? You probably thought of that already ;)

Give me a few days & I’ll report back.

Maybe a ADAHRS compass cal could fix it, worth a try.

Please pm me his contact details- I have an idea I want to discuss with him using capacitance fuel level senders.

I've been trying to reach out to the FK dealer here but no luck so far, is it possible to get a picture of the wing root area ? I'm guessing the fuel level sensor is in that area. "The fuel level gauges in my tanks are dead! Prone to failure!" Is this a known problem ? Did yours ever work ?

Richard, I've had the 'dropouts', very momentarily, with an Avidyne gps & another autopilot. It happens so quick as not to be a bother to me at this stage.

I understand your pain however if you are not impacting on the top or bottom surfaces of the wings then I don't see a huge cost, its just a pita :-) I have done this type of work before on my own composite aircraft & others. I'd still be interested to know - What make/type of fuel level sensor...

As Galin says, YMMV. Your situation may be different. As you most likely have a Rotax fitted does your FK have a fuel return line ? To where, both tanks or just one ? What make/type of fuel level sensor is currently used ? Where is it installed ? Easily accessible or would you need to remove...

There may be a solution, What aircraft type is it ? Pm me if you wish.

As the OP said, why would you do it differently to the install manual? - it actually shows the tx/rx & Power/ground connections to the Dynon GPS serial port 5