On Sat, 15 Aug 2020 11:03:42 -0700, you wrote:
Jim,
Thank you so much for the detailed response, VERY helpful.
My problem though is, once I put the antenna up, I will really NOT be able to get to the feed point easily. I have to install scaffolding up the side of my 3 story house to install it. So I will have to do the VNA test quickly, once, then I won't be able to get back up there easily.
So I'm trying to figure out how I would test it from the other end, without the ability to calibrate out the coax....
I would also like to do the same with marine antenna's, which all come with a hard wired feed-line with a set length (15' or 30' for example). So you can't calibrate at the antenna, so what do you do in this case?
What counts is the impedance present at the transceiver antenna jack.
You do the measurements WITH the uncalibrated cable connected.
Calibrating the anenna alone is a nice game,
but actually it is next to useless.
OE8UWW
