FT736R.1 The range for the 6m unit is therefore 46-56 MHz, and the 2m unit will give you 140-150 MHz. Yes, the transmitter will also work this span, but keep in mind a 10 watt signal on the 49 MHz band sticks out like a sore thumb! ;-) ("Wow! Listen to *that*! He must have a better walkie-talkie than these RadioShack junkers!") ;-) My attempts to modify the range on the 430 MHz rf module have not meet with much success, and a careful look at the schematics/numbers tell the story quite well; The module covers 430-440, a 10MHz range. Therefore, the address-line trick will yield no more coverage. Have Fun, 73! -- -Avatar-> KB6LUY +-------------------------+ % Note: I haven't tried or verified this, proceed at your own risk! WA2ISE And don't transmit outside your licesned bands!