With all due respect, I am well aware of the color coding of the lines and what they mean and how they relate to each other. This isn't the first time I have used this analyzer.
What I was referring to was the fact that the SWR, as it goes back up after the first low impedance point, never again went above 2:1 SWR. I have never seen this before, in pretty much every case before now it has gone much higher, and generally off the chart.
Just so you know that data you are referring to is a specific frequency, not the whole range, namely the blue line near the left edge of the graph. You actually get most of the color coding from the top right corner.
I don't like the fact that the SWR stays below 2:1 SWR for such a long time, (over 150Mhz measured, actually more). I know, make it long enough to include the 12 meter band and there are people on here that would call this a widebanded dream, I am not one of them. I also don't like how much return loss is the antenna has between the resonant points as that usually goes down much lower level than 10db.
The antenna has been installed on that car for a few years. Next time we meet we are going to take his antenna apart to make sure it doesn't have an internal issue somewhere.
Maybe I can talk him into RF Bonding as well...
Actually now that I looked at it again, that seems to also be higher cable loss than I would expect for such a ½λ run of RG8-X coax. I would have calibrated that out had the mount been easier to get to.
The DB
