We've decided in principal to go down the route of having FLARM and PilotAware fitted on a more permanant basis to our shared Robin DR400. Mounting the unit isn't an issue as there's space out of the way behind the panel, the issue we are coming up against is the positioning of the aerials.
I've seen a very smart solution which has all three aerials secured to the canopy via a metal plate - the issue with this for us is the canopy slides forwards, so needs a good extra meter of cable & is just going to get messy.
It's a certified aircraft so we can't go drilling holes ad infinitum and sticking stuff wherever convenient, which is a pain. Anything fitted needs to be "removable..."
We could put the whole lot in the rear of the aircraft on the parcel shelf...but no power there.
Any suggestions from those that have done it?