> > I have mentioned this before but here ya go; I know a fellow who built a composite airplane got it flying and would start to feel sick during longer flights. With some digging and thinking he realized the transponder antenna was mounted under his seat and that is what made him feel sick. I don't know if we all are affected the same or if he was an exception but based on his case I would put an aluminum shield between the antenna and my body. All of the aluminum factory built airplanes I have owned have the transponder antenna sticking out the bottom of the airplane about 10 or 12 inches behind the firewall pretty much below the radio stack so running the antenna cable is short and easy. The aluminum skin is the shield between the antenna and the humans. Maybe the 3 or 4 inch antenna can mostly be inside with just the end ball sticking out. I am not sure if that is enough of the antenna sticking out, maybe a radio guru can let us know. There are composite type antennas available that get buried into foam cores and glassed over.
Larry H.
