Most rf lines like low density foam has a spec return loss of about 20 db.
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On Sun, Jan 5, 2020, 7:28 PM Robin Midgett <K4IDC@...> wrote:
I've calibrated my NanoVNA & connected it to an approximate 350' length of
coax with a known good dummy load on the opposite end. The S11 plot is
attached...not pleasing at all.
Can anyone on the list say what the cause may be?
I have ideas, but I don't want to sway anyone's opinion..
