Radio Mods Database

                                                                                                  Web Page            http://www.hostingme.com/kb2ljj
                                                                                                                                   Web Server         http://216.102.57.116
                                                                                                                                   FTTP                   ftp://216.102.57.116 
                                                                                                                                   Email                   kb2ljj@pacnews.com
                                              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.
                             

All the mods are captured by Packet. 
KB2LJJ    Radio Mods Database 
take now responsibility or liability for any 
damage resulting from this modification.  
                                  
 I have been trying to help our ham radio with the radio modifications and have asked for any type of new radio mods.
 However, I haven't received too many.  If all of you contributed a little more,  I believe I would be able to help 
all the other ham's that are looking for these mods. I know it is possible to get more mods from all the Ham's because of
 the wide range that exist throughout the world.  By doing this we can  flourish and enjoy more of this hobby that 
we've taken part in for so many years. Furthermore, I ask you not to forget to send me any modifications that you might
 have through email.  I would really appreciate it.

      Email                kb2ljj@pacnews.com

 73's
   John Ribeiro
             KB2LJJ