Can anyone tell me the basic differences between the SB 110 and the SB 110A? Also, is this rig still a contender on the 6m band for occasional openings? I do have a decent 6m receive preamp but am wondering about images and stabilty in the receiver. I have an ft 620b and just plain don't like it so am looking for something a bit more with the program. Thanks Greg WA7LYO in sunny Feenix