As
I started to use the TM733E on my 3 bander COMET 901 , I had to modify my
transceiver. As I think some off you use a 3 way splitter to connect several
transceivers at the same time there was a problem,I could not use the 23cm band
and the splitter anymore sinds the TM733E came with only one antenna socket
(mixed VHF and UHF).
After looking around in different shops, I was
unable to find a splitter that had the UHF and VHF together on one socket and
the 23cm band on another. So I decided to have a look at the schematics off
the TM733E and noticed the US version has 2 antenna sockets.
Modifying
the rig is very simple: Make a second antenna cable with PL259 socket or get
it at your local Kenwood dealer (some 15$) (same cable as on the other mobile
dual banders ...TM701 etc.)Open both sides off the transceiver. Take off the
plastic cover off the spare hole at the back. Insert and solder the new
antenna cable. Take away the connection (one big pin) from the VHF to the UHF
pc-board with a good solderpump. Your rig has now 2 antenna-inputs ,one for
VHF ,one for UHF.
This mod. is also interesting for those who often use
the CROSSBANDREPEATER, sinds you can now connect a vertical to the 70cm tx and a
beam to the 2m part or the other way round.
Good luck with the
modification and ... have as much fun with the TM733E as i do ! 73 de Jan
ON1BJC @ ON4ABG TM733 and 9k6 Bps
As I first started to use
the TM733E on 9600Bps ,it didn't work very well. Rx 9600Bps was no problem
but the TX-side was poor in transmission-speed. After having a look at the
SERVICE MANUAL i discovered that the audiosignal from the G3RUH should at least
be 2 Volts PEP. This information is not in the original manual delivered with
the TM733E. Txdelay starts at 200mS and combination nr 9 (strap settings
G3RUH) seems to be the best to get minimum errors ... Hoping to set some off
you on the right track now... 73 de Jan ON1BJC @ ON4ABG TM733 &
9K6
Well John, i'm sorry i have to say this but the Kenwood TM733
is definitely NOT suited for 9600bd operation. It has several serious design
bugs.
PLL modulation, thereby giving very bad Bit Error Rate figures because of
the bad lf response of the modulation circuits. At 64 Hz, there is a 4.5 dB
rise.
Slow tx<>rx switching. The TM733 needs 100-150 milliseconds to turn
around. If your opponent (satellite or earth station) is faster with replying
you keep on missing his first packet.
These problems are very common
in the current generation "9600bd ready" transceivers. The Icom IC281/481, Yeasu
5100 and many others suffer from these problems. The Kenwood TM733 has
another design bug :
If you try to make more than about 2.5 KHz deviation via the data port,
the modulation gets very distorded. This is not easy noticable, since 9k6
modulation sounds like noise, and distorded 9k6 also sounds as noise.. This
problem is seen at more than one TM733, throughout Europe.
I sure hope
you can send this thing back and get your money back, John. TM-733E MOD
9k6 english
After I bought a Kenwood TM-733E transceiver for
packet radio I was very disappointed about the bad modulation in the 9600 baud
packet mode on the 430 mc band. For many digipeaters the tranceiver produced
insufficient fm deviation. If you increase the modulation voltage you will get a
strong distortion of your signal. The german Kenwood office was unable or
unwilling to fix this problem. After some experiments I found the following
solution for my transceiver:
Increase the internal packet radio
modulation signal for the 70cm band by reducing the value of a SMD resistor. The
resistor lives on the TX-RX Unit/Control board (X57-436X-XX)(C/4). The resistor
is named R536 and it has a value of 56 kOhm. I reduced itīs value by soldering
an additional SMD resistor of 30 kOhm on itīs top. The two resistors form a
new value of 19 kOhm. This will increase the modulation voltage for the PLL unit
and you need less input signal on the data input at the socket J402. My
tranceiver makes now a deviation of 3.5 kHz with 1V/pp instead of 2.2 kHz with
2V/pp before. There is less distortion than before. Concerning 9k6 packet
radio the TM-733E has a bad frequency characteristic. It can be fixed with a
suitable selection of the modem transmission filter. The following selection was
the best for my TNC2H: 0 0 1 1 (switches 5 to 8, 1 = up, 0 =
down).
Please note: I am not responsible for your
modifications. You will do it at your own risk!
You need:
15 to
20 minutes time, a magnifying glass a screw driver (X), a needle type soldering
iron and a SMD resistor of round about 30 kOhm
Remove the top cover ( 4 screws )
Remove the bottom cover ( 4 screws )
Remove the front panel ( no screws! )
Remove the plastic front cover ( 6 plastic snappers )
Disconnect the two flat cables on the front board ( shift the bolts )
Remove the front board ( 2 screws )
Find the SMD resistor named R536 ( the print on the resistor reads 563, it
is located on the back side of the front board between the two flat cable
sockets, use a magnifying glass! )
Solder the 30 KOhm SMD resistor on top of the R536
Reassemble the other way round ( good luck ! )
When the
modification is done you have to setup your modem (modulation voltage and filter
selection) again.
Concerning Kenwoods bad support in germany my next
packet radio tranceiver will be from a different manufacturer.
Please
send me a message with your results. Good success! vy 73 Norbert DC6BC @
DB0IZ.#NRW.DEU.EU MODS OF KENWOOD TM-733 for Japanese
version
Maybe there are some difference for USA , EU and another
vartion. So please use caution.
Remove the control panel. You can find CPU board.
Remove 2 screws on this board. Then turn insde out this board.
You can find a chip that printed [ 000 ] on this board.
---------------------------------------
I xx I xx meams [ 000 ]
I O O I O means hole of screw
I I
---------------------------------------
After remove this chip [ 000 ] , you can recieve as ffollows.
on 144MHz on 430MHz
118-173MHz 118-173MHz
130-173MHz 300-469MHz
300-469MHz 800-900MHz
On 144MHz side , press [ MHz ] key more than 1 sec. , change mode for
AM. On 430MHz side , change band for 800Mhz.
TM-733A Quick
Reference Guide
Assembly Mode Test
In the TM-733 Service
Manual, it describes a test mode that I haven't seen mentioned anywhere else.
So, here's the scoop:
Entering Assembly Mode: [CALL] + [MUTE] + [Power
On] All LCD segments should come on. (To exit, power off.)
Press the
[VFO] key. *This must always be done first* The serial port is checked and
"F" with "80" on the display indicates test passed. "1" or "2" means
failure.
Different keys now show different displays, with [LOW], [SHIFT],
[TONE], and [REV] also adjusting the backlight intensity.
Set the dials
to minimum, then press the [MR] key. Each of the dials shows the digitized
level.
This looks useful for checking all the keys and dials when you
suspect a bad connection.
Kenwood TM-733A Quick Reference Guide by Brad
Killebrew N5LJV
-----------------------------------------------------------------------------
[#] PRESS A NUMBER, NOT THE POUND SIGN.
[KEY] PRESS AND RELEASE [KEY]
[KEY1]+[KEY2] PRESS AND HOLD [KEY1] DOWN, THEN PRESS [KEY2]
[KEY1],[KEY2] PRESS [KEY1] MOMENTARILY, THEN PRESS [KEY2]
[KEY]+[PWR] WITH POWER OFF, PRESS AND HOLD [KEY] THEN HIT [PWR]
[KEY1]+[KEY2]+[PWR] YOU GET THE IDEA.
[F] (1s) PRESS AND HOLD [F] FOR ONE SECOND. "F" THEN BLINKS.
[KEY] (1s) PRESS AND HOLD [KEY] FOR ONE SEOND.
[F],[KEY] (1s) PRESS [F] MOMENTARILY, THEN PRESS [KEY] FOR ONE SEC.
-----------------------------------------------------------------------------
The following entries are in alphabetical order.
1 MHZ/10 MHZ TUNING TOGGLE [VFO],[F]+[MHZ]
ADVNACED INTERCEPT POINT (AIP) [F]+[A.B.C.]
ALL LOCK [F],[MHZ],[PWR],[F]+[PWR]
AM/FM MODE [MHZ] (1s)
AUTO DIMMER CHANGE [F]+[LOW]+[PWR]
AUTOMATIC BAND CHANGE (A.B.C.) [F],[A.B.C.]
AUTOMATIC OFFET (CANCELLING) [VFO]+[REV]+[PWR]
AUTOMATIC POWER OFF (APO) [F] (1s),[MHZ]
AUTOMATIC SIMPLEX CHECKER [REV] (1s)
AUTOMATIC SQUELCH [MHZ] + [PWR]
AUTOMATIC TONE FREQUENCY ID [TONE] (1s)
BAND SCAN [VFO] (1s)
BEEP LOUDNESS [F] (1s),[BEEP]
BLANKING A BAND DISPLAY [F] (1s), [BAND SEL]
CALL CHANNEL CHANGING (ODD SPLIT) (RX FR),[F],[C.IN] (1s),(TX FR)[CALL]
CALL CHANNEL CHANGING (SIMPLEX,DUPLEX) [F],[C.IN]
CALL CHANNEL RECALLING [CALL]
CALL/MEMORY SCAN [MR],[CALL] (1s)
CALL/VFO SCAN [VFO],[CALL] (1s)
CANCELLING AUTOMATIC OFFET [VFO]+[REV]+[PWR]
CHANGING CALL CHANNEL (ODD SPLIT) (RX FR),[F],[C.IN] (1s),(TX FR)[CALL]
CHANGING CALL CHANNEL (SIMPLEX,DUPLEX) [F],[C.IN]
CHANNEL DISPLAY FUNCTION [REV]+[PRW]
CONFIRMING PROGRAMMABLE LIMITS [F]+[VFO],(L.SHOWN),[MR](U.SHOWN)
CTCSS [TONE],TOGLE TILL "CT" APPEARS
CTCSS TONE FREQUENCY (SELECTING) [F] (1s),[T.SEL],[UP]/[DOWN]
DIMMER (AUTO CHANGE) [F]+[LOW]+[PWR]
DIMMER (DISPLAY) [F],[DIM]
DISPLAY DIMMER [F],[DIM]
DISPLAY DOMONSTRATION MODE [CALL]+[PWR]
DTMF CONFIRMATION TONES [PTT]+[DWN]+[PWR]
DTMF IN AUTOMATIC DIALER (STORING) [F]+[CALL]+[PWR],{#'s},[PF],[#]
DTMF NUMBERS (RECALLING STORED) [F]+[CALL]+[PWR],[MR],[#]
DTMF NUMBERS (TRANSMITTING STORED) [PTT]+[PF],[#]
DUAL TONE SQUELCH SYSTEM (DTSS) [F],[DTSS]
DUAL TONE SQUELCH SYSTEM (TONE SELECT) [F] (1s),[C.SEL],[#],[SHIFT],ETC.
ERASING MEMORY CHANNELS [MR],[F]+[MR]
ERASING PROGRAMMABLE MEMORY [F]+[PM],[#],[MR]
FREQUENCY READOUT BY BEEPS [F]+[TONE]+[PWR],[PF]
FREQUENCY STEP SIZE [VFO],[F],[STEP]
FULL RESET (MINUS PM) [MR]+[PWR],[F],[MR]
FULL RESET (PLUS PM) [MR]+[PWR],[MR]
INITIALIZE FULL RESET (MINUS PM) [MR]+[PWR],[F],[MR]
INITIALIZE FULL RESET (PLUS PM) [MR]+[PWR],[MR]
INITIALIZE VFO BOTH BANDS [VFO]+[PWR]
INITIALIZE VFO ONE BAND [VFO]+[BAND SEL]+[PWR]
LOCK (ALL) [F],[MHZ],[PWR],[F]+[PWR]
LOCK (TRANCEIVER) [F],[MHZ]
LOCK (TRANSMIT BAND) [F],[BAND SEL]
LOCKING OUT MEMORY CHANNELS [MR],[F] (1s),[MR]
MEMORY CHANNELS (LOCKING OUT) [MR],[F] (1s),[MR]
MEMORY ERASING CHANNELS [MR],[F]+[MR]
MEMORY RECALLING CALL CHANNEL [CALL]
MEMORY SCAN [MR] (1s)
MEMORY TO VFO TRANSFER [F],[VFO]
MEMORY WRITING (ODD SPLIT) (RX FRQ),[F],[MR] (1s),(TX FRQ)[MR]
MEMORY WRITING (SIMPLEX, DUPLEX) [F],(FREQ),[MR]
MUTE [MUTE]
PACKET BAUD RATE TOGLE [F]+[STEP]
POWER OUTPUT [LOW]
PROGRAMMABLE BAND SCAN [F]+[VFO],(L.FRQ),[MR],(U.FRQ),[MR]
PROGRAMMABLE LIMITS (CONFIRMING) [F]+[VFO],(L.SHOWN),[MR](U.SHOWN)
PROGRAMMABLE MEMORY (ERASING) [F]+[PM],[#],[MR]
PROGRAMMABLE MEMORY (RECALLING) [PM],[#]
PROGRAMMABLE MEMORY (STORING) [F],[PM],[#]
PROGRAMMABLE MEMORY SCAN [PM]+[PWR],[PM] (1s)
RD OUTPUT SQUELCH CONTROL [TONE]+[PWR]
RECALLING MEMORY CALL CHANNEL [CALL]
RECALLING PROGRAMMABLE MEMORY [PM],[#]
RECALLING STORED DTMF NUMBERS [F]+[CALL]+[PWR],[MR],[#]
RECEIVE AUDIO SWITCHING [F] (1s) [CONT SEL]
REMOTE CONTROL MODE [F]+[CONT SEL]
S-METER SQUELCH [F] (1s), [S.QSL]
SCAN (BAND SCAN) [VFO] (1s)
SCAN (CALL/MEMORY) [MR],[CALL] (1s)
SCAN (CALL/VFO) [VFO],[CALL] (1s)
SCAN (PROGRAMMABLE BAND SCAN) [F]+[VFO],(L.FRQ),[MR],(U.FRQ),[MR]
SCAN (PROGRAMMABLE MEMORY) [PM]+[PWR],[PM] (1s)
SCAN MEMORY [MR] (1s)
SCAN RESUME TOGLE (CO, TO) [F] (1s),[VFO]
SELECTING A CTCSS TONE FREQUENCY [F] (1s),[T.SEL],[UP]/[DOWN]
SQUELCH (AUTOMATIC) [MHZ] + [PWR]
SQUELCH (RD OUTPUT CONTROL) [TONE]+[PWR]
SQUELCH (S-METER) [F] (1s), [S.QSL]
SQUELCH HANG TIME [F]+[DIM]
STORING DTMF IN AUTOMATIC DIALER [F]+[CALL]+[PWR],{#'s},[PF],[#]
STORING PROGRAMMABLE MEMORY [F],[PM],[#]
TIME-OUT TIMER [F] (1s),[TOT]
TONE ALERT [F],[T.ALT]
TONE ALERT - CHANGE TONE [F]+[SHIFT]+[PWR]
TRANCEIVER LOCK [F],[MHZ]
TRANSMIT BAND LOCK [F],[BAND SEL]
TRANSMITTING STORED DTMF NUMBERS [PTT]+[PF],[#]
UHF+UHF OPERATION [F],[CONT SEL]
VFO TUNING LIMITS [F]+[C.IN],(L.FRQ)[MR],(U.FRQ)[MR]
VHF+VHF OPERATION [F],[CONT SEL]
WRITING MEMORY (ODD SPLIT) (RX FRQ),[F],[MR] (1s),(TX FRQ)[MR]
WRITING MEMORY (SIMPLEX, DUPLEX) [F],(FREQ),[MR]
If you have additions or corrections to this file, please send it to Brad
Killebrew N5LJV at n5ljv@uh.edu, or packet
n5ljv@f6cnb.#setx.tx.usa.na.
Standard Disclaimer: The authors take
absolutely no responsibility for the material presented in this document. The
procedures contained herein work on the author's radios, but proceed at your own
risk. Extended RF Modifications
Refer to diagram
below.
Remove power source from the radio.
Remove the display
panel.
Remove the top cover the radio.
Face the front of the radio
away from you.
Remove the speaker.
Looking from the back of the
radio, the control board is vertically mounted just behind the front panel wall
(which can be removed easily if better access is needed.)
Just to the
right of a chip labeled XRU4066BCF and just to the left of two green wires (B2
& B3 which are draped over the board to the rear) are two zero-ohm SMT
resistors, B0 and B1, marked "000".
Remove B0. (the one on the left -
furthest from the green wires) Taking it out might be a bit tricky. It's
glued down for surface-mount assembly. Be careful not to pull the trace from the
board.
Perform a CPU reset by holding [MR] while turning on the
radio. It will then ask if it is "OK?" to reset, press [MR] again.
The
ranges after modification are as follows:
Tx: 136-174 410-470 Rx:
118-174 300-470
The cellular band is indeed missing.
ONLY Removing
Jumper 1 (B2) is the MARS/CAP modification.
** Diagram of specified area
on Control Board **
EDGE OF BOARD, viewed from the rear, looking toward
front panel
The jumpers are actually soldered on the other side of the board, but the
loops come up over the top and hang over the B0/B1
side.
B0=R414 B1=R412
Here's something interesting! According
the Kenwood rep I spoke to, performing this mod *does not* void your factory
warranty. The same goes for any Kenwood published service bulletin or
modification info. We are encouraged to perform the repairs ourselves to save
them the trouble and expence. 19-07-1998DTMF Remote via Microphone
The TM-733 is fully
DTMF remotable via the microphone (documented). The radio can also be externally
DTMF controllable with an HT, but that will be described later.
The DTMF
control keys are exactly as shown on page 81 of the manual. Note that the
microphone is active all the time, so any ambient DTMF tones near your mic will
also change rig settings. This includes tones coming in on the other band and
out the speaker. Cross Band Repeating
Cross band repeat
isn't documented but comes ready from the factory. To enable cross band
repeat from the front panel, first select a band by pressing BAND SELECT. Then,
change the control to the other band by hitting [CONT SEL]. Next, press [F] for
one second, then the "X" button (far right side). Decimals will appear between
the Kilohertz digits, and the "ON" indicator will light momentarily. The
microphone sequence to enable cross band repeat while in remote control mode is
"DC".
The transmitter hang time can be toggled between 500ms to 0ms by
turning on the radio with [LOW] pressed. They also recommend enabling the
Time-out Timer, for obvious reasons.
Note that the TM-733 can also be
used as a "one-way" cross-band repeater. For example, if you can receive a
distant repeater with your HT, but have difficulty getting into it, you can use
the TM-733 to boost your transmitted signal. To set this up, just omit the part
where you "change the control to the other band by pressing [CONT SEL]." Doing
this will setup the TM-733 to repeat your signal to the other band, but will not
retransmit the distant station back to you. If this sounds ambiguous, play
around with it a little and it will begin to make sense. DTMF Paging and
Squelch
The DTMF Paging & DTMF Squelch protocol (AAA*BBB) is
compatible with the Yaesu 530 and all Kenwood radios supporting
this. Wireless Cloning
The advertised but undocumented
Wireless Clone function is described in App Note AAN-0008 which they will mail
out on request. (Maybe if enough people ask for it, they will include all the
functions in future instruction manuals.) In summary:
Prepare the two radios for simplex operation on the same frequency.
Turn both radios off
Press [CALL]+[SHIFT] + [Pwr On].
This should place the radios is clone mode with "CLonE" on the display.
Press PTT on the "Master" radio momentarily. This will start sending the
programming DTMF tones.
After all data has been transferred, the display of all radios will read
"End", indicating success.
If the signal is interrupted or corrupted, the "Slave" displays will read
"Err". Turn them off and try again.
Notes:
Both the Master and Slave radios must have the same number of memory
channels available for each band. Example: You can not clone a stock Master to
a Slave with ME-1 memory expansion.
You can not clone between different Kenwood radio models, even if they
seem identical.
Be careful when using the clone feature. It has been
known to wipe out or scramble memories on the master radio during or right after
clone. TM-733A PL Tone Distortion
August 30, 1994
Symptom
Transmitted PL
tones at the receiving station have a relatively high level of distortion. This
is easily seen when the incoming signal is viewed on an
oscilloscope.
Countermeasure
Change the value of the
"Pull-up" resistors in the PL tone encoder circuit as shown in the accompanying
chart and illustration. This reduces the distortion from around 9% to
approximately 4%.
Part OLD value NEW value
---- --------- ---------
R542 1.8k 2.7k
R543 1.8k 3.3k
R544 1.8k 4.7k
R545 1.8k 6.8k
R546 1.8k 10k
R547 1.8k 10k
R548 1.8k 10k
Procedure
Disconnect the power cable, microphone and antenna's, etc.
Detach the front panel and set it aside.
Remove the top and bottom covers.
Remove the speaker and speaker mounting bracket.
Disengage the plastic front panel from the main chassis.
Carefully disconnect the two ribbon cables from the Tx/Rx unit C/4.
Remove the two Phillips head screws that secure the Tx/Rx unit to the
chassis.
Turn the circuit board over and replace the resistors using the parts list
and illustration as a guide.
Reverse steps 1-7 for reassembly.
TX-RX Unit (X57-4360-00) Foil Side View
---------------------------------------------------------------
R R R R542
5 5 5
4 4 4 R543
7 6 4
R545
(IC403 on component side) R
5
4
8 _______
-| |-
-| |-
-| |-
-| IC402 |-
-| |-
-| |-
-|_______|-
Caution: This modification requires advanced surface mount soldering
equipment that is rated for CMOS circuits. It also requires familiarity with
advanced surface mount soldering techniques. If you do not have the proper
equipment or knowledge do not attempt this modification yourself. Seek qualified
assistance from your closest Kenwood Service Center (Long Beach, CA, or Virginia
Beach, VA).
The Service Manual specifies a test for the PL. The
technician is simply required to verify that any one PL tone is between 500 and
1500 Hz deviation. This is quite a wide tolerance range! The "standard" PL tone
deviation should be 750 Hz. Twice that strong might be too strong and become
audible. There are no trim-pots on the PL deviation, so I'm guessing that the
deviation is pretty constant from radio to radio.
The dirty PL is
definitely found on early models, but we have had many reports that the PL
problem has been fixed in newer versions of the radio. If you purchased your
radio after September 15, 1994, (or your serial number is greater than 55000000)
it's a good chance that you may not have the PL problem.
The other
problem concerns the DTMF Confirmation Tones. This feature is off by default (I
wonder why :), while it seems pretty useful. To turn it on, press [PTT] + [Down]
on the microphone while powering the radio on. This will generate short DTMF
confirmation tones whenever you send DTMF over the air from the keypad.
Unfortunately, it mangles the beginning of the outgoing DTMF tone! This is
serious enough that most local repeaters can't detect the tone, or count it as
two tones.
Get a receiver and listen to what you are sending out when the
Confirmation tones are enabled. It sounds to me like they may be mixing the
confirmation tone in with the real tone and getting some destructive
interference. Just a guess, though.
I called a Kenwood technician
(Ricardo) and worked with him on the phone to reproduce the problem there. So,
as of today, this is a Known Problem, and they are looking into a fix.
:-)
I am really curious to know what they would say if other folks called
up and complained about this problem. Would they deny hearing about it, or would
it really be a Known Problem? Might give some insight into the PL-noise denial
thing anyway. :-)
Personally, I'm much more concerned about the noisy PL
than the DTMF confirmation tones, since I can just shut those off and pretend
that feature doesn't exist. If enough people call about the PL problem, maybe
they will come out with a real fix and offer it under warranty to all the radios
out there (since they're all pretty new). My guess is that it will involve a
free TSU-8 tone decode module, but don't hold your breath. :-) External
DTMF Remote Control
The following procedure places the 733 in
External DTMF Remote Control.
Note that this mode is different than DTMF
Remote Mode. This mode concerns the control of the 733 with an HT, and not the
microphone.
Press Band Select and select the UHF band.
Pick a UHF control frequency.
Turn on the UHF DTSS function and select a tone sequence. (p. 89)
Turn the UHF DTSS function back off.
Press Band Select to move to the VHF band.
Press [CONT SEL] to move control back to the UHF band.
Turn OFF the radio, press and hold [CONT SEL] while turning the radio back
on, then release [CONT SEL]. The S-meter scale and the DT indicators for the
UHF band will begin flashing. The LOCK indicator will turn ON, and most
front-panel keys (except PWR) will be disabled.
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.