Hello;
I gave gap some serious consideration until I took a look at some of the comments on e-ham. I'm not familiar with the gap that Fred is using but the gap titan had some issues. I was particularly struck by the fact that one operators antenna caught on fire. Now in honesty I suspect he was running some power and that might not happen with 100 watts.
I tried looking for the 05 that John mentioned and found lots of stuff that I hope I never need to care about.
Richard