ICW2A.1 At this time the back side of the front panel is clearly accessible and the two CPU's are visible side-by-side across the top. Now refer to the following illustration: Top of Radio, Back side of Front Panel _____________________________________________________ ! -------- -------- ! ! ! ! ! !--- ! CPU-1 ! ! CPU-2 ! ! ! ! ! ! ! ! P ! -------- -------- ! T ! ! T ! -------- ! ! -------- !--- .<: <-D1 ---------- ! .. ! !fuse ! ! ! D2-> V ---------- ! .. ! D3-> V ! .. ! V <-D? ! ! D1, D2 and D3 are locations on the board. Only D2 is installed at the factory. To perform the mod, you must do the following: Remove D2 Install D1 Install D3 The locations of D1 and D3 are clearly silk screened onto the circuit board and are easy to locate. Don't attempt to re-use D2. The periods (..) show the approximate location of the solder pads for the 2-legged sides of the diodes. Diode D2 may be removed by carefully heating the leads and prying it up using a sharp tool. Be very careful since it's easy to lift the solder pads. One method of installing diodes D1 and D3 is to use a very small drop of super glue to mount the part, and then use a soldering iron to tack down the pins. After the parts are installed, reassemble the radio. Although the manufacturer recommends that the microprocessor be reset after this mod, I have found it to be unnecessary. All memories retained their settings after the mod. Tests using a dummy load and a frequency counter showed TX ability on UHF from under 400MHz to over 490MHz. TX on VHF covers from 136MHz to 174MHz. 73's, -fred AA7BQ ======================================================= I haven't tried or verified this, proceed at your own risk. WA2ISE And don't transmit out of legal bands!