I had a 28H in the truck prior to the 706MKIIG. I find that the 28H has a much more selective receiver. Also, the 706, being much more broad-banded picks up all sorts of stuff like noisy power lines, in-home computers, etc. This shows up on the rig as a series of pops and crackles that try to open the squelch. It's very annoying but it's a trade-off for an all-in-one radio, I guess. Doug VA7DD