EXPANDING MAXON HCB-40WX TO 120 CHANNELS

Disclaimer: This is for informational purposes only. All 10 meter and export CB radio mods, adjustments, tune-ups, channel/frequency expansions, modulation, power adjustments are related modifications are done at your own risk! 

1. REMOVE VDC POWER
2. OPEN UNIT AND EXPOSE PCB WITH MICROPROCESSOR ( IC-501 ).
   NOTE: THE TWO PCB'S WILL NEED TO BE SEPARATED.
   REMOVE SMALLER PCB FROM FRONT COVER ( 4 SCREWS ).

3.  

4. REMOVE SHEILD PLATE FROM PCB

5.  

6. LOCATE AND REMOVE R-01 AND R-02 ( 0 OHMS ).

7.  

8. REPLACE R-01 AND R-02 IN THE OPEN POSITION DESIGNATED R-03 AND R-04.

9.  

   NOTE: R-01 AND R-02 WILL APPEAR BLANK ( 0 OHMS ).

   R-03 AND R-04 ARE OPEN ON THE PCB.

    

10. CHANNEL 9 BUTTON WILL CONTROL CHANNEL BAND OPERATION.

11.  

    CHARACTER	BAND	FREQUENCY RANGE
    +	High	27.415 ~ 27.855 MHz
    NA	Normal CB	26.965 ~ 27.405 MHz
    -	Low	26.515 ~ 26.955 MHz

     

12. IF EXPANDABLE MODE IS NOT SEEN IMMEDIATELY, DISCONNECT VDC POWER FOR SEVERAL HOURS WITH THE POWER SWITCH LEFT IN THE ON POSSITION.