Two questions: Can the K4/10-F be field upgraded to 100 watts at a later time? That is to say, will there be upgrade kits available not too long after the basic rig is . . . just in case? Will the K4/10-F play as well with the KPA-1500 as the K4/100 will? If so, what RF output from the amp could be expected? Ted, KN1CBR