- Estimated price : USD 560
Modification for extended transmitting and receiving : 136 ~ 174 MHz and 400 ~ 470 MHz
1. open the down side and look at the two rows of diodes on the right side, placed vertically
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2-LVD2fM7We2qIqANIA31xxJVHIbRvBH_AFkSBmuIJ5sshKvxkU-HfJO5KjMIYkL48IPD2lVfQTEhfwwTs52RyaCByModiDLQ4w-Yh5rq7dEzKVnGtHieT_gD45egm18ZMBcYanm3-huL/s200/IC2820_mod00.jpg)
closed up
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgodvE7-olF7VVMr4mDY5ZGUGEXEYlstcCP4cW0aAnGiNe3eMPg37EKcj2C3pbuB-Zs51hsKURnF5DvT95gBB0UzmJjxHfud7zfbfZM_KIfJuVNhFQGLMNP8ha5op_AjPKzw4l8Gq37dd3J/s320/IC2820_mod.jpg)
- First diode is not present
- Remove second diode: 144-150 Mhz/430-450 Mhz auto-repeater USA
- Remove fourth diode: 144-148 Mhz/430-450 Mhz
- Remove fifth diode: 144-148 Mhz/400-470 Mhz
- Remove sixth diode: 137-174 Mhz/400-470 Mhz
- Seventh diode doesn't change anything
- Applying the eigth: cross-band is activated
- Remove second diode: 144-150 Mhz/430-450 Mhz auto-repeater USA
- Remove fourth diode: 144-148 Mhz/430-450 Mhz
- Remove fifth diode: 144-148 Mhz/400-470 Mhz
- Remove sixth diode: 137-174 Mhz/400-470 Mhz
- Seventh diode doesn't change anything
- Applying the eigth: cross-band is activated
- To activate cross-band : hold two main band knobs and press both.
- the radio will beep and the key symbol on the left side of the display will flash.
- now the radio is now active in the cross-band mode.
- To cancel the cross-band :
hold two main band knobs and press both.