Kenwood TS-440S (TS 440 S TS440S) mods reviews software and diagrams

   
 
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Kenwood TS-440S (TS 440 S TS440S)
TS-440S
Programming interface schematics for Kenwood :
Programming software for Kenwood TS-440S (TS 440 S TS440S) :
PDF User Manual for Kenwood TS-440S (TS 440 S TS440S) :
PDF Service Manual/schematics for Kenwood TS-440S (TS 440 S TS440S) :

Mods for Kenwood TS-440S (TS 440 S TS440S) :
   Kenwood TS-440S (TS 440 S TS440S) IF-10 (RS-232) interface
   Kenwood TS-440S (TS 440 S TS440S) Displays dots on certain bands
   Kenwood TS-440S (TS 440 S TS440S) Circuit Improvements
   Kenwood TS-440S (TS 440 S TS440S) mod for improved receive sensitivity of 0.5 to 1.6MHz
   Kenwood TS-440S (TS 440 S TS440S) PLL unlock due to VCO #5
   Kenwood TS-440S (TS 440 S TS440S) PLL unlock due to VCO #1
   Kenwood TS-440S (TS 440 S TS440S) Intermittent operation
   Kenwood TS-440S (TS 440 S TS440S) SSB Power-adjustment
   Kenwood TS-440S (TS 440 S TS440S) Digital Audio Modification
   Kenwood TS-440S (TS 440 S TS440S) Fan Temperature Modification
   Kenwood TS-440S (TS 440 S TS440S) Possible cure for TS440 showing dots only on display
   Kenwood TS-440S (TS 440 S TS440S) Undocumented feature
   Kenwood TS-440S (TS 440 S TS440S) Serial interface
   Kenwood TS-440S (TS 440 S TS440S) A few adjustments you should know
   Kenwood TS-440S (TS 440 S TS440S) modification to use antenna tuner
   Kenwood TS-440S (TS 440 S TS440S) display calibration
   Kenwood TS-440S (TS 440 S TS440S) Connection to a DATA
   Kenwood TS-440S (TS 440 S TS440S) Computer Interface Instruction
   Kenwood TS-440S (TS 440 S TS440S) increase the power by ALC control
   Kenwood TS-440S (TS 440 S TS440S) with PIN-Diods
   Kenwood TS-440S (TS 440 S TS440S) Operation with the MC-85
   Kenwood TS-440S (TS 440 S TS440S) Notch filter low frequency improvements
   Kenwood TS-440S (TS 440 S TS440S) Protecting Q33
   Kenwood TS-440S (TS 440 S TS440S) Case Screws binding in the heat sink
   Kenwood TS-440S (TS 440 S TS440S) RX Audio Mods
   Kenwood TS-440S (TS 440 S TS440S) Bandscope-Schaltung
   Kenwood TS-440S (TS 440 S TS440S) Modifications in FM mode

Kenwood TS-440S (TS 440 S TS440S) technical specifications :  Kenwood TS-440S (TS 440 S TS440S) technical specifications

Kenwood TS-440S (TS 440 S TS440S) Computer Interface Instruction

These Instructions are TS-440 specific, but the basics also apply to the TS-940, TS-811 and TS-711.

It is possible to save yourself a few dollars and lose nothing in quality by buying the parts to upgrade your Kenwood radio for computer control. Just purchase the parts were you find them and install them using the instructions in the Radio's Manual.

     IC 54 is a uPD-8251-AC   Serial Communications Interface.
                Commonly called an 8251A    ($1.89 Mail Order)
     IC 55 is a TC-4040-BP    12 Stage CMOS Divider.
                Commonly called a 4040      ($0.69 Mail Order)
The IC-10 Interface Kit from Kenwood Contains ONLY these two parts and less instructions than are in this file. The only thing you are going to miss, is the $22+ price tag on the IC-10 Kit.

 Signals are    TTL levels  (NOT RS-232)
Baud rate is    4800 (1200 Opt.)
   Format is    ASCII Serial;  1 Start, 8 Data, 2 Stops
The Baud rate may be changed to 1200 Baud by removing jumper W50 and installing a jumper from the left pad to the center pad as viewed from the front of the radio. This will become obvious once you have the radio opened up. Many other Baud rates are possible, just look at the schematic.

As long as you are in the radio, lift D-66 to enable the 10 Hz. display. The main tuning knob is varing this digit, so you might as well see it. It also helps when using RIT/XIT as the RIT/XIT display does not resolve the 0.01 KHz. digit. This Modification is in the Radio's Book.

Not in the book is the fact that if you lift D-80 and do an MPU reset, you will be able to transmit on any frequency between 1.5 and 30.0 MHz. This means you will be able to work the Mars nets, Etc. Do not transmit out of band. It is illegal even if it is accidental.

Some computers use TTL levels on their serial ports. If so, here is a time when you will not have to convert it to RS-232.
The IF-232 Interface from Kenwood is a 1488 and a 1489 chip in a box. These are an RS-232 Quad Line Driver and Receiver and are available at Radio Shack for $1.29 Each. Here is an easy project that will save you a lot over the $69+ Kenwood price of the IF-232 Interface. The 1488 needs a + and - supply.
Unregulated + and - 12vdc is just fine. Get the +5 vdc for the 1489 by putting a 7805 regulator on the +12 vdc supply. 100 mA.
is about the max you'll draw, so the smallest transformer you can find will still be plenty large. Don't forget to series up two of each gate to cancel the inversion that the 1480's produce.

ACC-1  Connector                  Use a 6 Pin DIN Connector.
                                         (Radio Shack $1.29)
Pin     Signal  Comments
________________________

1       Gnd     Signal Ground
2       TXD     Serial Data from Radio to Computer
3       RXD     Serial Data from Computer to Radio
4       CTS     Computer Ready;  (Radio Input)
5       RTS     Radio Ready;    (Radio Output)
6               No Connection

Pins 4 and 5 may be left Unconnected.






***** Command Description for Kenwood Computer Interface *****
______________________________________________________________

                Auto Information
                ________________
AIn; 
                The Radio Will Send the Status Info Automatically
                Whenever the Operator Manually Varies any Function
                on the Radio which is Covered in the IF; Command
                        Where   n = 0 for Auto Info OFF
                                    1 for Auto Info On

                The Status Information Will be Sent in the Form :
                        As defined in the IF; Command


                Display Memory
                ______________
DMnnnn;
                This is a Factory Diagnostic Function
                and is of no practical use to the operator

                The Contents of the MPU Memory will be Read
                        Where   nnnn = MPU Address (0000 Thru FFFF (HEX))

                The Contents of the MPU Memory Will be Sent in the Form :
                 DMnnnn-aabbccddeeffgghhiijjkk;
                        Where   nnnn = MPU Address (0000 Thru FFFF (HEX))
                              aa~~kk = Hex Number Pairs Of Next 16 Locations


                Down
                ____
DN;
                The Frequency or Memory Channel
                Will Decrement One Step


                Frequency VFO A / VFO B Request
                _______________________________
FA;
FB;
                The Frequency in the Selected VFO Will be Read

                The Frequency Will be Sent in the Form:
                 FAggmmmkkkhhh;   or
                 FBggmmmkkkhhh;
                        Where    gg = GHz. Value
                                mmm = MHz. Value
                                kkk = kHz. Value
                                hhh =  Hz. Value


                Frequency VFO A / VFO B Select
                ______________________________
FAggmmmkkkhhh;
FBggmmmkkkhhh;
                The VFO Selected Will be Set to the Frequency Defined
                        Where    gg = GHz. Value (May be sent As 00 or Spaces)
                                mmm = MHz. Value
                                kkk = kHz. Value
                                hhh =  Hz. Value


                Function Select
                _______________
FNn;
                The Function Defined Will be Selected
                        Where   n = 0 for VFO A
                                    1 for VFO B
                                    2 for MEMORY

                Identify Model Request
                ______________________
ID;
                The Model of the Radio Will be sent in the Form :
                 ID00n;
                        Where : n = 1 for a TS-940 (*)
                                n = 2 for a TS-811 (*)
                                n = 3 for a TS-711 (*)
                                n = 4 for a TS-440


                Read Information Request
                ________________________
IF;
                The Status Information Will be Sent in the Form :
                 IFggmmmkkkhhh     snnnzrx yytdfcp
                        Where   gg~~hhh = Value as defined in FA Command
                                      s = "+" or "-" Value of RIT/XIT
                                    nnn = Value of RIT/XIT (n.nn kHz.)
                                      z = "0"  (Not Used in TS-440)
                                      r = Value as defined in RT Command
                                      x = Value as defined in XT Command
                                     yy = Memory Channel No.
                                      t = 0 for Receive
                                          1 for Transmit
                                      d = Value as defined in MD Command
                                      f = Value as defined in FN Command  
                                      c = Value as defined in SC Command
                                      p = Value as defined in SP Command  


                Lock Knob
                _________
LKn;
                The Manual Frequency Control Functions Will be Disabled
                        Where   n = 0 for Lock OFF
                                    1 for Lock ON


                Memory Channel Select
                _____________________
MCxmm;
                The Memory Channel Defined Will be Selected
                        Where:  x = Don't Care   (Use "0" or Space)
                               mm = Memory Channel No. (00 thru 99)


                Mode Select
                ___________
MDn;
                The Mode Defined Will Be Selected
                        Where:  n = 1 for LSB
                                    2 for USB
                                    3 for CW
                                    4 for FM
                                    5 for AM
                                    6 for FSK


                Memory Read
                ____________
MRnxrr;
                The Memory Channel Defined Will be Read
                        Where:  n = 0 for RX VFO
                                    1 FOR TX VFO (Split Channels Only)
                                x = Don't Care      (Use "0" or Space)
                               rr = Memory Channel No.    (00 thru 99)

                The Memory Information will be sent in the Form :
                 MRn rrggmmmkkkhhhdz    ;
                        Where:  n = 0 for RX VFO
                                    1 FOR TX VFO (Split Channels Only)
                               rr = Memory Channel No.    (00 thru 99)
                         gg~~hhh = Value as defined in FA Command
                                d = Value as defined in MD Command
                                z = "0"  (Not Used in TS-440)
                        (Note: Four trailing Spaces)


                Memory Write           
                ____________
                 MWnxrrggmmmkkkhhhdzxxxx;
                The Memory Selected Will be Set to the Frequency Defined
                        Where:  n = 0 for RX VFO
                                    1 for TX VFO (Split Channels Only)
                                x = Don't Care  (Use "0" or Space)
                               rr = Memory Channel No.    (00 thru 99)
                          gg~~hhh = Value as defined in FA Command
                                d = Value as defined in MD Command
                                z = "0" (Not Used in TS-440)


                RIT/XIT Clear
                _____________
RC;
                The RIT/XIT will be set to 0.00 kHz.


                RIT/XIT Down
                ____________
RD;
                The RIT/XIT will Decrement by 0.01 KHz. (10 Hz.)


                RIT/XIT UP
                __________
RU;
                The RIT/XIT will Increment by 0.01 KHz. (10 Hz.)


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