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 GREAT LAKES INTERNATIONAL DIGITAL ASSOCIATION, TECHNICAL BULLETIN ON
 MODIFYING THE MOTOROLA MOCOM 35 UHF SERIES FM TRANSCEIVER FOR 9600 BAUD PACKET
 by Ron Kramer VE3MX sysop GLIDA node stack Port Colborne, Ontario
 and asistant sysop of VE3SNP BBS Niagara Region. 

## NOTE.. Start with a operational tuned up radio on the frequency you are
          going to be using it on.

1. Remove DC power cord, Antenna cable, and take the radio out of the case.

2. From the component side of the radio, remove jumper from pin #40 and #41
   located with the front of the radio facing you just to the left of the
   center partition, about an inch and a half from the back.
   NOTE.. keep this jumper.

3. Remove the ends from the jumper in previous step. Obtain a 1.1 uH RFC
   and place insulating covers on leads, (note do not cut the leads on the
   rfc use full length), solder the jumper ends to the ends of the RFC.    

4. Install this RFC on Pins #40 and #3, note #3 is located to the right of
   T101 and the left of Variable resistor. on the left side of the radio.

5. Remove capacitor C119 to the right of T102.

6. Remove capacitor C117 to the right of T101.

7. Turn radio over front facing you solder side up.

8. On the right hand side locate T101 and T102 near the rear of the chassis.

9. Cut trace to the right of T101 alignment hole, between the first and second
   componet holes on trace going from front to back of set, (this trace has
   three component holes) see figure 1 below.


      - Add a 4 inch length of hookup wire here on top side of board to xtal
     :     ______________
     '- > : o           o:       _
          :o .-----------'      :o:3   
           -'         T101    .'.'    
                        _     :o:2 <-- add a 36 pf Mica here to ground   
                      ( 0 )   : : <-- cut here  
                        -     :o:1 <-- add a 47 pf Mica here to ground
                              '-'


                            Figure # 1


10. Solder a 47 pf Mica capacitor from hole 1 of foil you cut in step 9,
    to ground. See figure 1.

11. Solder a 36 pf Mica capacitor from hole 2 of foil you cut in step 9,
    to ground. See figure 1.











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12. See Figure 2 and cut trace to front right of T102 between hole 2 and 3
    of trace.

                        T102
                         _
     alignmnet hole -> ( o )
                         -    _ 3
                      _______:o:
 add 36 pf Mica -> .'  o _____.'
 here to gnd.    1 :o:'''' ^--Cut trace here
                   '-'  2

13. Connect power cord, antenna and turn on and retune T101 and T102 before
    continuing with modification, once tuned remove power cord and antenna.

14. Locate the Transmit Crystal channel element and remove from board.
    Open up the element and remove the fixed capicitor approximately
    25 to 32 pf that is in parrallel with the varialble capacitor.
    solder a 4 inch lenght of small hookup wire to the junction of the
    variable capacitor, crystal and thermisistor, on the foil side of
    this pc board. re-install the crystal circuit in the plastic 
    element case and file a notch on the side of the plastic case for
    the jumper wire to exit between the plas