I have the same tuner:
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www.mfjenterprises.com/D ··· pany=mfjI find tuning is different for everyone (antenna, rig, coax, etc.). I have a hybrid rig (Kenwood TS520), and find it easiest to tune the radio into a dummy load first, per its' procedures, then tune per MFJ, then tweak the radio if needed. I only have antennas to work 20 and 40, so I don't have much tuning to do...