Kenwood TM-V7 - Cross-Band Repeater With Remote Control

1. Set-up UHF frequency to be used for both remote control
   and as your local input/output for the repeater;
   - Use a frequency well out of the way of ‘normal’ operations
   (I used 439.950 MHz for testing)
   - Ensure you set UHF for LOW power output
   - Enable CTCSS and select a CTCSS frequency
   (I used 230.5)
   
   
2. Set-up the VHF frequency – this is the one ‘everyone else’ will use,
   i.e.; the main net frequency;
   - Select appropriate frequency and power level for the main net operations
   (I used 145.2 MHz and 25W)
   
   
3. Set-up and enable remote control;
   - Press the UHF band button to set the PTT onto UHF
   (TM-V7 display should confirm this)
   - Press the CTRL button (between the two band buttons)
   to set CTRL on the VHF (check display confirms this)
   - Power off the rig
   - Press and HOLD the CTRL button then power-on the rig
   - The DT prompt should now be seen to be flashing
   (on the UHF side of the TM-V7 display)
   - The rig is now in remote control standby mode
   
   
4. Un-plug the mic’ on the TM-V7 !!!!!
   - When the TM-V7 keys-up for repeater, the mic’ becomes live.
   This leads to horrendous feed-back if you have the VHF/UHF
   volume up for monitoring the TM-V7 traffic
   
   
5. Set-up your hand-held;
   - On UHF, match the frequency being used (439.950)
   - Enable CTCSS and use the same ctcss frequency as previously
   set on the TM-V7 rig (230.5)
   - Set appropriate power-level
   This should be as low as possible - you only want comms to the TM-V7
   
   
6. To enable remote control;
   - On the hand-held, key-up and enter the DTMF tones: A 0 0 0 #
   - The TM-V7 should beep and the DT indicator should now be on steady
   
   
7. To exit remote control mode;
   - On the hand-held, key-up and enter the DTMF tones; A #
   - The TM-V7 should beep and the DT indicator should now be flashing
   
   
8. To enable the repeater;
   - Use step 5 to enable remote control
   - On the hand-held, key-up and enter the DTMF tones; C A #
   - The repeater should now be enabled
   - Note that only the C actually enables the repeater,
   the A# tells the TM-V7 to exit back to remote standby
   - You should now be able to use the hand-held on UHF
   and see the TM-V7 cross-band to/from VHF
   
   
9. To disable the repeater;
   - Use step 6 to disable remote control
   - On the hand-held, key-up and enter the DTMF tones; D A #
   - The repeater should now be disabled
   - Note that only the D actually disables the repeater,
   the A# tells the TM-V7 to exit back to remote standby
   - You should now be able to use the hand-held on UHF
   and the TM-V7 will not cross-band to/from VHF

Paul Mann

G7OJA

28^th March 2007