On 2/5/23 5:29 PM, Steve Jones wrote:
Dennis,
Use an antenna analyzer to see what's going on. I recently used a RigExpert
AA-54 to tune up my 160M vertical with elevated radials. It provides a lot
of good data!
73,
Steve
N6SJ
Or any of the recent crop of $50-100 VNAs..(NanoVNA, NanoVNA2,
NanoVNA-F, NanoVNA-H, NanoVNA-4, etc.)
One of the nice things with the VNA is that you can do a calibration at
the end of the coax, so you don't have to figure out what the coax is
doing to the feedpoint impedance. I mean, you also need to measure at
the source end of the coax, because that's what keeps the amplifier
happy, but when trying to figure out what's going on, the VNA provides a
lot more information.
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