Sounds like a good antenna system with a good match Pete , D-104 Handheld power mic will get you feedback every time ,especially with talkback , as Mr Mole said , IM sure you have more then enough audio without the pig sound Pete , many a tuned radio with those mic's you really don't have to have a lot of audio for them to be loud and proud on them (there amplified) , pretty much what Mole said and you should be just fine . There are different settings for everything and IM sure you will figure out what's best for you , get it to where it doesn't pig you out and then ask for a radio check , there's a good chance that you will still be louder then hell , so don't think your not getting out because you can't turn everything up .......trust me Pete ,that's far from the truth. Let us know how it works out for you and good luck. P.S ......stock mic's and N.C mic's work pretty darn good as well , especially with talkback , and both type mic's help keep out any back ground noise that might be around you when your transmitting. SK