I am installing a com system in my project. BNC connectors, RG-400 coax and a CL-122 bent com antenna. Carefully crimped connectors, tight routing and coax anchored along the run.
Yesterday I happened to look in the tail cone of my Piper. Two bent com antennas are on the top of the fuselage. One had a coax that had been clipped off about 6" from the antenna and was just hanging down. The second antenna had an old ratty looking coax hanging down in the tail cone unsupported for about 4 feet. The coax center wire was soldered to a ring fastened by a nut at the end of the antenna whip. The coax shield was stripped back 2-3" from the end and soldered to the antenna base below the white ceramic insulation ring. This Piper installation has worked for nearly 50 years. WOW1
How much com transmission efficiency am I losing with this arrangement?
Yesterday I happened to look in the tail cone of my Piper. Two bent com antennas are on the top of the fuselage. One had a coax that had been clipped off about 6" from the antenna and was just hanging down. The second antenna had an old ratty looking coax hanging down in the tail cone unsupported for about 4 feet. The coax center wire was soldered to a ring fastened by a nut at the end of the antenna whip. The coax shield was stripped back 2-3" from the end and soldered to the antenna base below the white ceramic insulation ring. This Piper installation has worked for nearly 50 years. WOW1
How much com transmission efficiency am I losing with this arrangement?
