Programming the Motorola GM300

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Other Wiring Changes: While you're inside the DB25 end of your programming cable, you can also connect a wire from the modular plug pin 4 Mic. Another reason this can happen is the drive letter not being correct for how the drive was mounted. Battery Connector to Radio: Motorola GP350 portable Require power supply or battery 9V 2. Special thanks to Gyula HA7JCA for.

LS+, GTX Mobile, M1225, M1225LS, M10, M100, M120, M130, M200, M208, M216, M1225, Sportbase, M400, Radius Mobile, GR300, GR1225, R1225, LCS2000, Maratrac, SM50, SM120, Desktrac and Maxtrac Mobiles. The interface is a single shared line that carries both transmit and receive data. In MOTOROLA GP-340 connector the output voltage is limited to approximately 3 Volts.

Programming the Motorola GM300

The programming cable is intended to be used with a computer RS-232 port for programming radios and other devices. The main goal of this cable schematics is the invertion of signal levels. That is because the COM port's logic one is a low voltage level, logic zero is a high voltage level. Another goal is the correct voltage level transformation with regard to the real radio programming circuits. And nothing must get burnt... Schematic diagram Connection circuits jacks for mobile radios are shown as they are plugged into sockets GP-340 connector draft by K. Bokhanov VT1, VT3, VT4 transistors may be BC847 or similar i. Fast silicon diodes of any type will do, for example 1N4148 or LL4148 in MiniMELF case. LP2950 is replaceable with LM2951 with appropriate resistors, 78L05 is the worst choice due to it's own high current consumption. It may fail to work in some cases. Use 78L05 with an external power source. Cable for RRxD and RTxD connections should be shielded. Multiwire cable with low mutual capacitance among wires is also applicable. Otherwise TxD to RxD interference will result in programming failure. It is important for some KENWOOD radios. It is convenient to use an additional connector to attach particular radio jacks to the programming cable. DB9 is recommended as a highly reliable one. Cable connection to KENWOOD portable radios has a specific feature. Radio sockets have prominent rubber rings, thus standard stereo jacks cannot be plugged in firmly. The jack flanges should be ground off till 5 mm in diameter. The jack cases should be cut accordingly. TK-353 radios are put in the program mode by holding the side button below PTT and C button while powering the radio on. TK-250 enters programming mode by pressing Lamp and Lo buttons while turning the radio on. In MOTOROLA GP300 connector use 2 Ampere diode if you intend to transmit with the cable connected or 1 Ampere diode otherwise. In MOTOROLA P040-P080 connector grind off the jack flange until the jack can be seated firmly. This connector does not need an external power supply if it is provided from the port by a programming software. MOTOROLA mobile CM series radios are programmed through the rear accessory connector. The programming cable is not powered from the port. The power supply can be taken from the radio power supply or the accessory connector if available. The corresponding programming cable connector was designed by Vadim UA9MIR MOTOROLA mobile CM series radios may be also programmed through the front mic socket. The programming cable is powered from the radio socket. The corresponding programming cable connector was designed and tested by Belu Daniel Romania. In MOTOROLA GP-340 connector the output voltage is limited to approximately 3 Volts. The specific jack is used, it is shown on the figure. MOTOROLA MAG ONE radios are programmed with the specific connector with different transmit and receive data lines. To be firmly inserted in the socket, the 2. Jacks before and after the modification are shown. The photo is provided by Alexander 'Gulliver'. VERTEX VXR-5000 and VXR-7000 programming software works improperly on modern computers with fast processors. Computers with i80486 are recommended by VERTEX, iCeleron 433 MHz processor may be also applicable. The common data transmission and reception line is used. The cable can be used as a CAT interface for tranceiver control. This cable connector includes separate Tx and Rx data lines and a power supply from the radio. Alexander Nesterov has designed the TAIT T2000 series radio connector. The main idea is the additional level invertion using a CMOS logic IC. CD4093 is recommended because it has Schmitt trigger inputs. However, any CMOS invertor can be used. Unused IC inputs not outputs! Alexander Nesterov has also designed the programmer schematics enhancements VD8 and R13 and a specific connector to program MAXON SL500 radios. The programmer is used as a non-inverting buffer. In SL500 connector VD1 and VD2 diodes provide an extra protection of the radio. They can be omitted if desired. Oleg EX8MLT has proposed HYT TC-500 radios connector. It is different from KENWOOD portables connector which is used for other HYT radios. Both jacks should be plugged in simultaneously. Alexander Ivanov has designed a connector to ALTAVIA radios. These radios are designed and manufactured in Russia. Alexander UA9CEE has designed a connector to STANDARD GX-2000 radios. The radio should be programmed with slow computers recommended processor rate 166 MHz or less under MS DOS. Valery UA6LPG has designed a connector to Russian Granit-202 radios. Programmer schematics is classic. The radio is put into programming mode by holding 'Phi' button while powering on. Yuri US5IVZ has designed a connector to DRAGON SY-5430 programmable radios. It should be linked to the microphone connector. Federico Menthe Argentina has modified the TAIT radios connector. Now it is capable to program T3000 series handheld radios. Vladimir Vashchenko has designed a connector schematics for VERTEX VX-800, VX-4000, VX-6000, etc. These radios have a specific accessory connector. Alexander 'Gulliver' has proposed the connector for the VECTOR VT-44 MILITARY portable LPD radio. Roman RN3ADR with the author's participance has designed the connector for SIMOCO SRM-9000 series radios. Before programming the radio must be turned on. To do so push and hold SW1 button until HL1 LED switches on. After programming turn the radio off by holding the button until the LED switches off. Now you may disconnect the programming cable from the radio. Valery UA9MRQ has proposed the connector for the russian GRANIT 2P-21 mobile radio. Yury US5IVZ has proposed the connector for ALAN HM-200 radio. Georgy RN3ZNL and Dmitry RN3ZQL have tested the programming cable attached to a computer via a COM - USB2. In this case a DOS programming software seems to work correctly with the emulated serial port various DOS softwares for MOTOROLA mobile radios were tested. Also the data exchange speed for DOS programs via the emulated port is notably higher then via the standard serial port under Windows XP. Modern high speed computers vere used in those tests. A connection to devices with a non-standard processor supply voltage cordless and cellular phones requiers a special connector. A TxD key power is taken from the phone, so the input logic levels cannot exceed the processor supply voltage. For example SENAO SN-258 is attached by its test connector in this way: TxD - cont. R1 resistor may be omitted because the phone RxD circuit has an inner 47 kOhm resistor to the ground. The cellular phones connector can be used for applying AT-commands or firmware replacement. There are no hardware flow control circuits in the connector. The Siemens specific connector is shown. Use it for AT-commands with the switch turned off, for firmware downloading with the switch turned on. The Siemens phone socket pinout is from. For more information please search specific cell phone sites. The programming cable 97. In order to print it save the GIF image to disk. Print it, it will be of the right size. Please note that Rind resistor and a LED are used just to indicate the power supply voltage. You can omit R12, Rind and a LED, the circuit will work. Some words are in Russian, the most significant words are translated. The recommended value of Rind is 4. The programming cable was tested with 336 device types, i. Device radio type Checked by Recommended software Connector KENWOOD TM-V7 Igor RA0FMF MCP-V7 ver 1. The high zero effect is present. KPG-87D KEN-2 Pseudo-MOTOROLA GP-680 Valery UA9MRQ R00. KPG-55D KEN-2 Pseudo-KENWOOD TK-7020-1 Alexander UR5TID KPG-80D KEN-1B SIEMENS cellular phones A35 the author firmware programming Freia, etc. PHO-3 S35 the author firmware programming, AT-commands , Andrey Kolennikov firmware programming, unlocking, customizing Hyper Terminal, Winswup32, ZeeSiemensG3, S35C35M35 Explorer PHO-3 ME45 the author AT-commands , Yevgueny RA9MHL firmware programming Hyper Terminal, Freia... PHO-3 S45 the author AT-commands Hyper Terminal PHO-3 SL45i the author AT-commands Hyper Terminal PHO-3 C60 Serguey UA0CIC AT-commands Hyper Terminal PHO-3 The correctly assembled programming cable needs no adjustment. Let's see the troubleshooting technique if the cable does not work.. Check the assembly carefully. Check the component correspondence with the schematic diagram. Here are the most common errors in the programming cable assembly. Obviously it will not work. In this case the work is not guaranteed. In this case the cable can not be powered from the port reliably. Those regulator ICs should be used with the external power supply only with the appropriate C4 capacitance. They think it will do. No, it will not. Power rectifier diodes and germanium diodes will not work. If the LP2950 is used C4 should be 1. Make sure no wires are broken and all contacts are reliable, especially in a connection to the radio. Broken wires are the frequent reason of malfunction. Connection to the radio must be reliable. Round stereo jacks must be plugged in firmly until stop. Their flanges may be ground off if needed. RJ-11 and RJ-45 connectors get oxidized easily. Socket contacts may be cleaned with an erasor scrap. Jack contacts may be cleaned with a thick needle. The wrong voltage may occur due to assembling defects or bad serial port extension pieces. Please note: the serial port may power up the circuit only while accessing the radio. Some software especially made by Motorola gives no power from the port, so external power is needed. Make sure the software and operational system are correct. The most common mistake is running DOS programs under Windows. Port accessing technique under Windows is different, DOS programs access ports incorrectly. Use MS DOS or Windows'98 in DOS mode for such programs. Make sure the radio is powered correctly, is turned on and functions properly. Uncareful trunking board removing or burning radio inner circuits with the bad programming cable makes the radio unprogrammable. The battery of a portable radio must be charged completely. A mobile radio must be powered with an appropriate power supply. Consider the specific features of the radio being programmed. Most radios are put in programming cloning mode automatically. Some radios are put in programming cloning mode manually by pressing a specific set of buttons while turning on. Some radios need pressing specified buttons to start data upload or download. Some radios may be locked to prevent reading or writing data. Refer to radio manuals or search the web for information. The author especially appreciates the active participance of Sergey UA9UDQ, Yevgueny RA9MHL, Valery UA6LPG, Alexander 'Gulliver', Vladimir Vashchenko, Sergey Bunin, Pavel RA0SJB, MALE aka Dmitry, Alexander Nesterov, Nikolay aka 'KOKA', Belu Daniel, Norman Miller, Roman RN3ADR, Roman RV3SBQ, Ramil Yunusov, Albina Luchaninova, Oleg EX8MLT, Alexander Ivanov, Alexander UA9CEE, Yuri US5IVZ, Valery UA9MRQ, Victoria Chernigovskaya. Special thanks to Valery UA6LPG for the updated PCB design. Special thanks to Gyula HA7JCA for. The more detailed cable description is published at and. The author does not collect and does not distribute radio programming or service software. Please do not ask the author for the software! Reporting about your experience of testing the programming cable please give the following information: 1. Yevgueny Andropov, E-mail address is on the diagram.

If you use thin wire you will be able to feed this out the edge of the 16 way sin. Alexander Ivanov has designed a connector to ALTAVIA radios. I have received a few conformations from others that they do work as expected. RJ45 to radio: All Maxtrac, GR400, GR500, GM300, GTX Mobile, M1225, M1225LS, M10, M100, M120, M130, M200, M208, M216, M1225, Sportbase, M400, Tout Mobile, GR300, GR1225, R1225, LCS2000, Maratrac, SM50, SM120 and Desktrac Mobiles. It would help a lot though to know what ALL of your port settings are set at, not just baud and FIFO. For example, if I mount my D: drive as the C: in DOSbox, I have to north sure the path I set corresponds to that and set the path as going to drive C:, not drive D: because DOSbox will motorola gm300 programming cable pinout it to the correct drive when it comes through. Jack contacts may be cleaned with a thick needle. Here's my completed cable. Program cable for Motorola Solo Radio RIB box required in Programming. Optimal PCB picture resolution is 300 dpi.