Thanks to Moleculo for the mods. i added some pictures to show where the pads are etc.... This mod will expand the transmit range from 137-175 Mhz and 410-470 Mhz Remove battery Remove the (3) small black screws. Carefully open the radio, spliting the radio front and rear cases Looking down inside of the top left side of the radio (left of rotary encoder) , locate and ADD Solder to jumpers "0" and "1" (jumper "0" is the top jumper and jumper "1" is below it) Assemble radio. Press and hold [M/V] and [AR] keys while turning on the radio. you will see need to be bridged with a small tad of solder.