Modifica espansione di banda per KENWOOD TH-48A

[RADIOMOD]

KENWOOD TH-48A

Expanded RF

                                                   
1- Disconnect the battery and antenna.

2- Remove 4 back case screws and open the radio.

NOTE: There are 2 versions of this radio. The later version have 2 green
jumpers wires.
CUT W2 jumper only and go to step 8 below

3- Locate and unsolder the two solder tack point on the shield.
( Not required in later version ).

4- Remove 2 screws holding the shield.

5- Locate chip diode positions D8... D15. [ part # MA110 or 1SS355 ].

6- Remove diode D8, D10, D15, [ save the diodes ].

7- Install diode D11 and D14. ( Use diodes removed in the previous step ).

8- Reassemble the radio.

9 Reset the microprocessor. [ Press and hold [ M ] and turn power on ].

ATTENTION - W1 and W2 only on letter version.




ALIGNMENT POINTS

VR-1 CTCSS adjustment ------- VR-4 S-Meter
VR-4 High/Low power ------- VR-5 Mid power
VR-7 DTMF deviation Adj. ------- VR-8 Modulation Adj.