Quote:
Originally Posted by az_gila
Try it on the ground and in flight and see if there is a difference.
|
I worried about belly performance on the ground. However, I found having a type certified aircraft with all of the com antennas originally on the top of the airframe, lined up in a row caused problems with ELT transmitter excitation that interfered with regular com radios. So I replaced one com antenna with a Comant CI-122 on the belly. Not only was the above problem mostly eliminated, but the belly antenna worked equally well on the ground and in the air. No problems calling ground or getting ATIS while taxiing.
So I installed two CI-122 antennas on the belly of my RV-10, and they both work great on the ground and in the air. Using GTN-650 and SL-30 for com radios. Never had any problem communicating with ATC. Have not attempted to find someone to check SWR. I used all RG-58 with crimped BNC connectors for nav and com equipment, RG-400 for GPS and transponder.