Originally Posted by
brickshouse
i seen the futaba 3pk comes with the r603fs rx, will it work with the r603ff rx's??
Yes...works just fine. I have the FS in one of my cars and the FF in another, both bound to my 3PKS.
You just won't get the diversity antenna benefits with the FF, as you pointed out, but it most likely won't be noticeable anyways.