GPS antenna failure

[eddies]

I have a 3 year old Skyview installation with Dynon supplied GPS.

This is also the only GPS source for the Skyview.

Last week the GPS went off line taking the transponder with it.

On landing I moved the wires around near the base of the GPS puck and it came back on line and kept working for about 1 hour until it failed again.

I was a long way from home (approx 1000nm) with lots of airspace to fly through, I took a gamble and used some tape to hold the wires to the base of the puck rather then letting them just dangle free. This allowed me to get home without any further issues.

Has anyone experienced this before ?

I am especially interested in any feedback from Dynon Support.

Cheers,
Eddie

 

[jakej]

Hi Eddie
Yes, I've seen this before but caused (not saying it happened with you) by a lot of 'handling' of the antenna & attached wiring loom. My method to mitigate this is to cut to wiring short (about 18") from the antenna as this then results in less strain on where the wires exit. Later on I just add a 9 pin dsub M&F connector, makes it simpler to remove the antenna later if needed.

Jake J

 

[dynonsupport]

Eddie:

You seem to have diagnosed an SV-GPS-250 with an intermittent wire at the base of the unit. If the SV-GPS-250 is under 3 years old, please contact Dynon Avionics Technical Support for a warranty replacement - support at dynonavionics dot com, or 425-402-0433.

If it's over 3 years old, buy a new one (they're not repairable) - sales at dynonavionics dot com, or 425-402-0433.

I have a 3 year old Skyview installation with Dynon supplied GPS.

This is also the only GPS source for the Skyview.

Last week the GPS went off line taking the transponder with it.

On landing I moved the wires around near the base of the GPS puck and it came back on line and kept working for about 1 hour until it failed again.

I was a long way from home (approx 1000nm) with lots of airspace to fly through, I took a gamble and used some tape to hold the wires to the base of the puck rather then letting them just dangle free. This allowed me to get home without any further issues.

Has anyone experienced this before ?

I am especially interested in any feedback from Dynon Support.

Cheers,
Eddie

 

[dynonsupport]

You mention that the GPS "took your transponder offline".

If you got a message "ADSB POSITION SOURCE OFFLINE" then the transponder was still working as a Mode-S transponder, it just was not transmitting your GPS position. This is expected when there's no GPS to transmit. It does not mean the transponder is off however.

Or did you have a different experience?

 

[eddies]

I got an error message, transponder failed.

This went away once the GPS came back on line ?

Eddie

You mention that the GPS "took your transponder offline".

If you got a message "ADSB POSITION SOURCE OFFLINE" then the transponder was still working as a Mode-S transponder, it just was not transmitting your GPS position. This is expected when there's no GPS to transmit. It does not mean the transponder is off however.

Or did you have a different experience?