John Morronga wrote: Subject: Yaesu VX-1R - Expanded Transmit 137 - 175, 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. Modification Complete Perform at own's risk. J.M