I have a 5 element with 100 watts on 6 meters, fed with 75 ohm hardline. Running a year long experiment with it then will change it out with lmr400 and see if I can tell any difference on tx and rx. Using an analyzer and the principal that every 1/4 wavelength will show exactly what is read out of the port on the antenna, I have matched it via resonance around 50.100. Last check SWR at the beam and back at the end of the radio are around 1.3:1 with contacts in the log to show it works.
If I had the room I would do a side by side test with two of the exact same antennas side by side, one with LMR400 and the other with 75 ohm hardline. But a city lot and a wife that is already complaining I have too many antennas do not help
Plus the hardline is free, was thrown out from a spool end remnant. Perk for working for the cable company
