[Milsurplus] grc106 low audio

[comcast]

folks i have a grc106 working as a fixed station using ame mode i have been receiving reports of low audio. i made a mike adapter using a motorola mocom70 mic and also the older style base station mike.  compared to the h33 handset ( am ive tried several different h33s) audio no better. any recommendations for a carbon mike with gain?   i have  an electrovoice 602t aviation hand mike which has a built in amp and am thinking about using that. 
thanks
jeff

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