On the MPP tested the 3g Trackimo sending location data at 1 minute intervals and the tracking is spot on, it uses google maps so very accurate positioning

No impact on AC operation,  no intereference at all, works well with the placement on the AC, lasts up to 2 weeks on a single charge

Great for finding the AC if there is a fly away even maybe a theft, but you need 3g or 4g connection.

A bit expensive but I think it's worth it if you should happen to be out of VLOS as a bit of insurance.
You can see the tracking on the photo below

Great info - thanks for sharing. I may invest in one.

I've been researching for a GPS tracker for my drone,  thanks for sharing your experience.