My aircraft will have three antennae, not including the Dynon GPS module which is mounted in front of the instrument panel on the Harness Support Tray, The two whip antennae, the VHF and the ELT, were mounted on top of the aluminum Upper Gap Seal between the wings and the third, the Transponder sharkfin antennae, was mounted on the bottom of the Upper Gap Seal. Each of the antennae came with mounting instructions from the manufacturers and templates for the holes that I drilled in the Upper Gap Seal. This was a pretty straight forward operaton spread over five short work sessions. The only exception was that the VHF antennae backing plate was not supplied with the correct pre-drilled holes. After checking with the manufacturer I modified the plate as shown in the top photo. The ELT came with its own cable from Artex and the VHF and Transponder coax cables came with the wiring harness. All three cables run down the pylon. The ELT cable stops in the baggage compartment where the Artex 345 ELTwill be installed, and the other two carry forward along the bottom of the hull port sidewall up to the bow compartment where they will plug into the Garmin GTX 327 transponder and the Flightline FL-760A VHF transceiver mounted in the instrument panel. Placing BNC connectors onto the VHF and Transponder coaxial cables was straightforward. I was careful to keep the labels in place at both ends of each cable for future reference.
