The issue with frequency congestion on CTAFs and the MULTICOM is as simple as
many pilots just talk too much!
There was an article way back in the CASA Flight Safety Magazine which suggested that if pilots first considered what value they were going to get when pushing the PTT, they might reconsider the transmission. Adding to the radio 'noise' does not always give the the desired results except giving the user a warm and fuzzy feeling that s/he is doing something right - wrong!
All of this goes back to training and an understanding of the system that we operate in. Clearly the education provided does not cut the mustard as the results show a widespread lack of understanding with the view that talking on the R/T will solve all the problems. Not only does this include the LCD but the airlines as well. Do we really need some making up to eight, yes eight calls around the circuit? Why do we need to know when you are taxing to the fuel bowser? Give me strength!
The answer is not to have more allocated frequencies either. In fact there should be less. With the appropriate education and understanding of the airspace system by users, many of the dedicated CTAF frequencies could be deleted in favour of the MULTICOM. The less dedicated frequencies the better in my view - it would certainly make operations at low level much more simple in regard to frequency selection.
