ok ... in another thread i asked about the a-h knob in relationship to ssb .... through the knowledge lent we established that they are different frequencies ... with that being said what are those frequencies...do they differ radio to radio? and with the Stryker sr490 not having a freq meter would it be beneficial to add and inline? and the last thought for now ( i swear ) should i worry about my swr's on those frequencies? i look forward to the moment of enlightment thanks in advance fellas