I think I am seeing this as being the high power input version (10w max in instead if 100mw in. I'm thinking that black block on the if input is the  50ohm resister. Other than the jumper noted that is not there, everything else looks to be at a cursory glance , the high I put.   Anyone else have an older one like this design of DEMI's (high or low in) that could confirm? I'm guessing too that the hp versions of other bands are if the asme configuration.  Thanks.