Anyone that understands the operation of solid state PA sections with band
pass filtering for each band would not risk using the rig out of band. It
may not of hurt anything yet but why risk it. In time it will catch up to
you. The filters are designed to present a safe matched impedeance to the PA
for a specific frequency range and attentuate any spurs. Icom says no...what
about "dont do it " dont you understand?

Gary