I notice a drastic power output (TR7)  reduction when VSWR is very slight. i.e. 1.5.1 for example.  On an MN 4 it usually puts out around 120 watts but the tuner needs to be nulled to flatten out the reflected power.  This seems very sensitive and not what the manual specifications list.  Any comments appreciated,
 
Mike
 
AK7P

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