I ran my 1.5kw amp into a kilowatt capable antenna tuner then into wire
antennas all the time.
Your SWR is only going to be perfect 1:1 on one specific frequency only.
Jumping 0.3 SWR across any band is within normal for any wire antenna.
Consider installing a high power tuner after the amp.
OTOH with a solid state rig it's a good idea to get it below 2:1.
My 756 Pro will operate pretty much the entire 40 meter band with the
internal tuner. However the solid state amp (Tokyo Hy-Power HL-1.5Kfx)
shows a substantial power drop with 1.2:1 compared to 1:1. At 1:1 it
runs 1 KW out. At 1.2:1 it is down to a bit above 800 watts. At 1.3:1
the reflected power will start tripping the protective circuitry.
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