Hmm, I have learned that supporting a local marathon with ham radio on a bicycle will really require a bicycle trailer, as well (due to need to use a high power radio and power to reach the repeater they are using). So, probably not happening for me. (that could be fixed of course by a person in the right place to relay traffic, or a portable repeater, but don't think they have the resources required). Will consider a "radio trailer" as a future project. #hamradio