Modifications for the Kenwood TH-G71A



19-07-1998 TH-G71A Beyond Mars modification
Author: Jerry, KK6YO


11/03/97

This modification is provided "as is" and is subject to change without notice, Kenwood Service Corporation (Nor I) make any warranty of any kind with regards to This modification procedure, including, But not limited to, the implied warranties of merchantabilty and fitness for any purpose. Kenwood Service Corporation(And I) shall not be liable for any error or for incidental or consequential damage in conjuction with the furnishing, performance, or use of this modification procedure.

Modification procedure.
  1. Remove The battery Pack and antenna.

  2. Open the SPKR/MIC dust cover.

  3. Remove the three screws from the back panel of the transceiver

  4. Carefully lift up the bottom end of the back panel and pull the entire back panel towards the bottom of the transceiver to clear the antenna connector from The top pnnel. Do not break the ribbon cable That connects the back panel PCB to the front case PCB.

  5. Set the back panel to the left side of the front case.

  6. Locate and remove diode D512 and D513 from the bottom right side of the front case PCB.

  7. Assemble the transceiver by reversing the steps listed above. The transciever will automatically reset when turned on. 
   TX Capability.
   136.000 - 173.995Mhz          400.000 - 469.995Mhz

   Rx capability.
   118.000MHz- 173.995MHz,       400.000MHz-  469.995Mhz
   320.000MHz- 399.99375Mhz,     800.000MHz-  823.9875Mhz
   849.000MHz -868.9875Mhz       894.000MHz-  949.9875MHz
Note:
This change also allows the transceiver to access a previously suppressed menu number 16. this menu allows the transceiver to switch between FM and AM in the ll8Mhz- 136.000MHz range.

Another Note: If you only want to expand the RX,Remove D512 ONLY.
For MARS/CAP TX expand only, cut the green wire(W500)ONLY.

Here is a drawing of the radio. (Which tells you just about everything you need to know.)