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Which is correct PGXL or HF Auto

KB4OIF
Member ✭✭
Good morning. running a 8400M, PGXL, and a HF auto tuner. 27 watts of drive from the flex. SWR 1.2. When TX, PGXL says 550 watts(EXAMPLE) hf auto says 425 watts. running it into a Delta Loop for 40 meters. Which one is correct. 110 Volts house power.
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Best Answer
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They are all correct. SWR, forward and reflected power are not a constant across a feedline unless it is into a resistive 50 ohm load. If you change the length of the feedline you will see it will change to new values. If you know the SWR on the Antenna side of the tuner it might help explain things a bit more.
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Answers
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Thanks Mike.
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