SUBELEMENT T9 - Radio waves, propagation, and antennas [3 exam questions – 3 groups]
{"Image DocumentName": "SUBELEMENT T9 - Radio waves, propagation, and antennas [3 exam questions \u2013 3 groups]", "Image ImageDescription": "T9C \u2013 1 exam question. Feedline types, Losses vs. frequency, matching and power transfer. Coaxial cable is used more often than any other feed line for amateur radio antenna systems because it is easy to use and requires few special installation considerations. It is important to have a low SWR in an antenna system that uses coaxial cable feedline to allow the efficient transfer of power and reduce losses. The characteristic impedance of the most commonly used coaxial cable in typical amateur radio installations is 50 Ohms.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}