RE: No low end channels for JR???
There is a possiblility of interference on the lower channels so JR does not offer them. Futaba does not seem to have this problem on the lower channels.
Don't read alot into the single vs. dual conversion between JR and Futaba. While most companies single conversion receivers are.........lets just say, not that great. The methods used by JR make it the equivalent or better than other dual conversion receivers. Look at some of the independent testing done, JR is always on top or right there.
Ed M.