I want to put the antennas vertically in the rear of the fuselage, except for the transponder which I will put under the pilot seat projecting to the exterior. I am thinking alum disks would work, but have no idea as to what size they would have to be. Any help or suggestions will be appreciated. >From: resa...@cox.net +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
For my ELT antenna ground plane I used "tin foil" and attached it to the fuselage floor with spray adhesive. Just make sure you have a good connection between the foil and where it attaches to the ground connection on the antenna. As for the transponder antenna under the pilots seat, someone on the net might know if the radiation that close to your body is a wise decision or not. Are you through having children? :-) I once heard a report of a police officer getting cancer from his radar gun as he always placed it on his lap when not shooting motorist. True or not it's food for thought. Your xponder will be putting out radiation with each reply it sends out. Larry Flesner