(disables automatic repeater shift) For Serial # 9D, 9F and 9J series only. Serial Numbers above 9N can not be modified
1. Remove Battery and Antenna.
2. Remove control knobs, screws.top panel & body screws and open Radio
3. Remove solder bridge from Pad # 2
4. Remove solder bridge from Pad # 4
4. Place solder Bridge on Pad # 3
5. Reassemble the radio
6. Reset microprocessor. (Press and hold [MR] & [VFO] and turn radio on then off)
(Press and hold both up and down keys and turn power on)
7. Enter the following: 4200 [VFO] 4700 [VFO] 4200 [VFO] 4700 [VFO]
8. Press [Function] &  to change channel step.
RANGE: RX 420 MHz - 470 MHz TX 420 Mhz - 470 MHz