- Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwi
dth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specifi
ed in dB/foot and is a linear relationship.
- Connecting centre fed antennas, dipoles, yagi
s, rhombics, loops to coaxial cable, unless care is taken, it is not diffi
cult to end up wi
th feeder radiation resulting in power loss and the radiation characteristics changes