Further to the above...a couple of possibilities for uncomplicated mobile operation that I think could work for me are; 1) Use local repeaters on 10m, 6m, 2m, 70 or 23cm as appropriate (we don't get 220MHz here). 2) Use simplex on the above bands though most activity tends to be on repeaters. 3) Use our 4 metre (70MHz) band; FM operation is simplex as the band is only 500kHz wide with FM operation mostly between 70.3 and 70.475 MHz. There's quite a bit of activity and I've had some good contacts from the car. Range is pretty good, it tends to be less affected by topography than the higher frequencies and there are effectively only a few 25kHz spaced channels used for FM voice, keeping it simple. 4)Use DMR via the local repeater just in local mode on TG9; this removes the need for channel changing and (in the area where I live) provides a series of linked repeaters with quite a wide coverage. Could also use Fusion although it's a bit more complicated in terms of button presses. For portable use I'd be inclined to use the bike as antenna support/ground. One thing that bothers me slightly when mobile is the level of RF exposure if running QRO, I don't think I'd want to run much more than 10W with the antenna that close. 73, Simon G0CIQ.