Why cringe? Because a "MARS mod" is usually not for MARS, it should really be called a "freeband" mod because we all understand that the mod is really not going to be used on MARS. It's done mostly because some folks just can't help themselves and they want to hot rod or somehow improve the operation of their radio. As if they were actual Electrical engineers and not just another hobbyist fooling around just to see what happens. It's the same reason why we read so many posts lately where the OP tried to upgrade software or firmware in a completely fine radio only to "brick" the thing. Happens a lot and then they come here looking for a fix. But back to the "MARS mod" thing: my favorite lately was the EU ham, from Switzerland I think it was who tried the Mars modification or was looking for info on it. He was using the terminology "MARS mod" without understanding that Military Auxiliary Radio is a USA thing, intended for the US Army and Air Force at the beginning and then branching out to include the NAVY, Marines, Coast Guard and other US military. Not an European program. If they're gonna mess around with their radios, possibly screwing them up beyond belief, let them be honest about their intent without trying to lend legitimization to their efforts, OK? BTW, just for info, I was US ARMY MARS at AAM5USA at Ft. Sill Oklahoma for one summer way back when. Really enjoyed that. Made me want to go Signal Corp. Unfortunately for me, I was locked into my primary MOS and could not change. OH, poop! I went civilian shortly after that, so what the heck!