I just completed the RF Gain and S-Meter calibration on my K3 (4521) and all went smooth. However I am left with a question (of course!). If I leave SMTR MD in NOR, changing PRE or ATT, the affect will be seen on the S-Meter. If I leave SMTR MD in ABS, the S-Meter does not respond to any change in PRE or ATT. What is the advantage of leaving SMTR MD set to ABS since I would guess it would be meaningful to the operator to actually see the effects of using PRE and/or ATT? Tom - W4BQF
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