Service manual

KB2LJJ Radio Mods Database and Manuals
● To begin remote control, you should key the external radio and press the following key sequence: "Axxx#" where "xxx" is the preset
DTSS code selected earlier.
● If the proper code is received by the 733, the beeper will sound and the DT indicator will stop flashing. The radio can now be remotely
controlled using the function chart below.
● To return to standby mode, press "A#" on the remote radio.
● To return the radio to normal operation, turn the radio off, then press and hold [CONT SEL] while turning the radio back on.
Refer to this chart when using the TM-733 in "External DTMF Control".
1 2 3 A
T.ALT ON TONE ON CTCSS ON ENTER
4 5 6 B
T.ALT OFF TONE OFF CTCSS OFF TONE SEL
7 8 9 C
CALL VFO MEMORY REPEATER ON
* 0 # D
DOWN POWER LEVEL UP REPEATER OFF
There are no "shifted" functions. Just one function per button.
After you hit "B" for TONE SELECT, press * or # to go up or down, and same is true when in VFO mode or in MEMORY mode. Tones 7, 8,
and 9 mimic the three buttons at the top of the 733 mic.
Pressing "C" places the radio in cross band repeat mode. You will recognize this because of the dots between Kilohertz digits. After pressing
"C", put the radio back into standby mode with "A#". The 733 will now cross band repeat. To disable cross band repeat, place the radio back
into the External DTMF Remote Control with "Axxx#". If you can read through the lines, the 733 is capable of operating as a frequency agile
remote base. Now Kenwood just needs a CW IDer!
TM-733 data pinouts descriptions
o o
o o
o o
On the booklet it says
1 = pkd packet data input transmit data frm tnc to tranciever.
2 = de ground for pkd.
3 = pks packet standbye tnc can use this pin to inhibit the the transciever microphone input while transmiting packet signals.
4 = pr9 detects 9600 bps data (500 mvp-p/10 kohms).
5 = pri detects 1200 bps data (300mvp-p/10kohms).
6 = sqc squelch control output inhibits tnc data transmit while transceiver squelch is open.
Prevents interference to voice communications on the same frequency. allso prevents retries. output level
open squelch: +5 v (high)
closed squelch: 0v (low)
I bought a baycom board,ive tried to put the baycom boad 5 pin din plug to this but faild so far on one attempt,if you are very good with the
practical side of radio's could you please tell me the proper way to wire my kenwood tm 733e up the the baycom.
ATTENTION
The KB2LJJ takes no responsibility for any damage during the modification or for any wrong information made on this modification.
http://www.kb2ljj.com/data/kenwood/TM-733.htm (9 di 9)30/08/2009 18.42.07