I'm not sure why the ripple is in there. I have never seen that when I do
an SWR measurement. The minimum of 1.2 isn't bad, but the frequency is 406
MHz. What band is the antenna for? Is it a commercially-made antenna?
Zack W9SZ
On Thu, Feb 6, 2025 at 5:47?PM jeffinwa via groups.io <k7jsm=
[email protected]> wrote:
When I am constructing an antenna, I have been using this device to plot
the swr in my shop. I usually set a wide enough bandwidth to easily see
the dip at resonance.
In the shop, connecting this device directly to the SO239 connector, the
sweep on the screen is perfect. But in testing with the antenna installed
with coax, and testing at the end of the feed line, the sweep seems
strange. See attached
