The links below are discussions, in part talking about coax length and the idea for making a feed line invisible. There is a thread below "Make Your Coax Invisible" that got me to thinking, but I'm not suggesting anything about amplifiers. In the CB world I've heard many suggest the feed line length does not mater, period. I've also heard folks say the feed line length does not matter, and then adding, if your match is off...re-tune your antenna. I've also heard many say to make your feed line as short as possible, period. I read manufactures recommend specific feed line lengths and multiples for their antenna kits. My old antenna mentor use to tell me to keep the feed line length at random lengths and avoid problems. He also said never make your feed line length a resonant length at your frequency of choice. In my limited understanding I never could determine his reasons for saying this...except for the idea that feed line length did not matter, if the antenna was tuned perfectly to a resistive match and was resonant. Back in those days for me, I never considered CMC an issue I could deal with. I don't recall ever hearing things demonstrated and described as noted in the link below. I guess only these newer analyzers make such considerations possible for the average operator. This was revealing for me.