Gotta try. Anybody have an ICOM IC-M710 Radio ??? I ended up with one and of coarse ICOM states they no longer service such things. Maybe somebody else in ICOM ? The radio is built like a tank and so far I can't even figure out how to get it apart. HF USB Marine Radio. Usually known mods made such radios usable in amateur radio but can't find anything as to this radio. (and it's more modern than the M600,M700....) Specs suggest it even does CW but depends upon version of the M710. It must be modifiable if potential CW usage. Even a FL-100 CW Narrow Filter.(option)