I was looking around for uhf antenna tuners. I didn't find many. Then I got to thinking that an antenna tuner could give a good swr at the tuner but by the time the rf traveled to the radio that the match could be off depending on the length of the connector from the radio to the antenna tuner. Am I right or does the tuner match the antenna to 50 ohms at the tuner and then there is no change in the 50 ohms of impedance as it travels from the radio to the antenna tuner? I am asking this question because I seem to remember that you can place a 200 ohm load on one end of a coax and you can read different values of impedance based on wavelengths as you move along the coax or transmission line.