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the radio is galaxy dx949 bought the radio brand new from copper electronics and hade it alligned the modulation limiter as far as i know was not clipped. i run an external frequency counter and it is tuned right on the money. I'v bean running around 3 watts into amp the modulation meter on the radio does swing past 100% if the mic gain is cranked up. i turned the mic gain down so it dont and still if i turn the amp past half way it distorts. running dad key of 2 watts and amp halfway up dead keys at abought 250 and swings to abought 600 crank it up dead keys at abought 500 swings to abought 800 or so. before installing linear swr was almost 1:1 match with amp installed runs 1.4:1 withamp off on radio side. withamp on runs1.2:1 or so. after the amp with it on it runs over three to one i was told to disregard the reading after the amp for the antena is already tuned to the "vehicle".