TM731A.7

Kenwood Cross Band Repeat: How to USE it
 
Hardware information for modifying the Kenwood TM-731A for cross band
repeat is widely available on many packet bulletin boards.  However,
information on how to impliment cross band repeat is often not present
along with the description of the hardware mods.   What follows is
KENWOOD's documentation on how to USE the TM731a after it has been
modified for cross band repeat:
 
 
 
Text of Kenwood Sheet on using Cross Band Repeat on the TM-731A:
 
The repeater corss-band operation allows the TM-731A to receive on one
band and re-tramsmit the signal on the other band.  An incoming signal
will automatically be switched to the sub-band.  The TM731A will then
re-transmit the signal from the main band.  Each band may contain shift
information.  Only one band can contain sub audible tone information
(the optional TSU-6 ... currently called by Kenwood the KQT8... is
required for tone decode).  If one band requires a sub-audible tone,
either select the TONE function for encode or the CTCSS function for
encode / decode.   DO NOT turn both TONE and CTCSS on in the one band.
 
1. Select the first frequency in the main band.  If required, select the
     offset.
2. Press the BAND key to move the contents of the main display to the
     sub-display.
3.  Now select the second frequency and offset.
4.  If Tone or CTCSS is required for one of the bands, continue with
     this step.  If Tone or CTCSS is not required, go to step 5.
  a. Place the operating frequency that requirs TONE or CTCSS in the main
      band (use the BAND key).
  b. Select the sub-audible tone by pressing the F key and then the
      T.SEL key.  Rotate the main encoder knob until the desired tone is
      displayed.  Press any front panel key to display the operating
      frequency.
  c. If only the TONE function is required, press the TONE key (the [T]
      indicator will light in the display).
  d. If the CTCSS function is required, do not turn the TONE function
      on.  Instead, press the F key and then the CTCSS key (the [CTCSS]
      indicator will light in the display.  If the CTCSS arrow is not
      pointing towards the main display, press the F key and then press
      the CTCSS SEL key.
5.  Adjust the main and sub-band squelch controls to the threshold
     point.  The TM-731A will transmit in the repeater cross band mode
     if the squelch controls are set too low or a signal is received.
     (comment: setting both squelch controls properly is VERY
     important!)
 
NOTE:  THE NEXT STEP WILL PLACE THE UNIT IN THE REPEATER CROSS-BAND MODE
 
6. Press the F key and then press the A.B.C. key.  Three dots should be
    lit in both display frequencies.  The unit will now operate as a
    cross band repeater as described above.
 
7. To take the TM-731A out of the cross-band repeat mode, repeat step 6.
 
                                -- EOF --