I wouldnt mess with it unless you absolutely want to lower it (and raise the
low end) as those are typical results for most amps. An external tuner is an
option.
Carl
----- Original Message -----
From: "John Keating" <john.keating@outlook.com>
To: <Amps@contesting.com>
Sent: Sunday, March 14, 2021 8:14 PM
Subject: [Amps] QRO HF2000 input SWR adjustments
The input SWR at 160m is below 1.5:1 from 1800 to 1925 khz, then rises
rapidly to >3:1 at 200 khz.
Similarly, at 80m it's below 1.5:1 from 3600 to 3880 khz then rises to
2.2:1 at 4000 khz.
Those are at what seem to be optimum settings of the trimmers for each of
those bands.
Wondering if others have similar experience, and have succeeded in
"flattening the curve".
73, John
AI6LY
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