In the FCC arena, one of the better ways to get technical restrictions removed is to apply for and operate under an STA - Special Temporary Authority, a document from the FCC that basically allows you to operate an exception to the normal rules. Typically the only requirement is that you make a good case for it technically and that you write up a report afterwards. In the past, STAs have been the basis for changes to the rules. Someone who writes well may want to consider submitting one to allow higher data rates based solely on bandwidth and then experimenting with it. Another possibility is to apply for a Experimental Radio Service license which basically allows you to do just about anything if you can make a good case for it. They used to be a little expensive and they require a written report on what you found out with your experiments but it does allow nearly anything you can think of. - Brian On Thu, Mar 03, 2016 at 07:42:09PM +0200, Demetre - SV1UY wrote: > Not good for US though, "thanks" to FCC's 300baud symbol rate restrictions of HF.