I have a Uniden Solara radio with a Merchant Marine VHF NAV-5 antenia.Having trouble hearing other boats most of the time only hearing one side of conversation. Out today with boats close that I new and they could not hear me but they where load and clear.Could it be the antenia,mic,or radio. I was thinking maybe trying the antenia.Any sugestions to steer me in the right direction would be helpful.