The top surface just behind the canopy is already drilled for VHF whip aerial.

The aerial to be fitted has a BNC coaxial connection on it’s base that can be accessed from within the rear cabin.

The screws that fix the aerial onto the fuselage have cup shaped anti shake washers to hold them.

To ensure that water doesn’t make its way past the screws and down the threads I’ve used some silicone to seal them before tightening them.

The finished installation after running some silicone sealer around the base of the aerial.

To get an idea of how the avionics connect together I laid it out and connected it up. I’d already charged the backup batteries up so they allowed me to power most of the system up. The ADAHRS, Servos, Radio and Transponder can’t be powered up as it needs wiring but it gives me a good idea of how it can be laid out in the Aircraft.