Monday, July 26, 2010

ICOM IC-2820H 144/440 MHz DUAL BAND TRANSCEIVER

General :
  • 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


closed up
- 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


  • 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.

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