RE: carbon fibre and antenna
" Can a small piece of delaminated carbon rubbing create some of these carbon issues? "
Yes it can, and it will.
We went through a lot of different tests with the carbon and antenna problems. We are starting to produce the 44 sized F7- Cutlass that is pictured in the Jets forum.
This airframe was originally all carbon. What we found was that the carbon in our case almost never caused a problem, in fact when range checking we would have to rub the antenna on the carbon to cause a problem. We did fly several prototypes in all carbon exept for the hatches, and we mounted a Deans antenna to one of the fiberglass hatches. No problems there. However the production airframe now has a Kevlar front. The wings and rear half of the fuse are still all carbon. We had to continue to use a base loaded antenna on the outside of the fuse because the front of the fuse is to full of radio gear. Kevlar is lighter and stronger than cabon fiber but it is not as stiff, however it is a little difficult to work with compared to carbon, as far as cutting and sanding. The main thing about using a whip type antenna is that it is perpindicular to all your wiring etc.,this is what really helps. The thing about it is, even with all those tests it's that one time you get into a position when the carbon will cause a problem and then what. Play it safe with that type of investment.
Good luck with your project,