- #MOTOROLA PROGRAMMING CABLE GM300 SERIAL#
- #MOTOROLA PROGRAMMING CABLE GM300 PORTABLE#
- #MOTOROLA PROGRAMMING CABLE GM300 SOFTWARE#
Of course, you will need to program the COS and PTT on the correct pins, and, ensure that the signal level (usually low) matches at both ends, so the TX is keyed when the RX is busy, and, not keyed when there is no signal present at the receiver. Unfortunately, the original cable is long since discontinued by Motorola. Because the programming kit replaces the battery, you will also need a 9v supply.
#MOTOROLA PROGRAMMING CABLE GM300 PORTABLE#
The portable radios in this series are programmed using a cable that connects to the back of the radio. You could easily add in a simple project to send a CW ID to make it legal for use in the amateur bands. Radios covered: GP300, P110, GP350, GP280 & GP88. It’s basically a very crude cable to repeat audio, and, key the transmitter. I brought a cheap cable on eBay, mainly for the connectors, but, I figured before I cut it about, I would make a schematic, in case I ever needed the cable. The signal diode prevents collisions and bus conflicts between TX and RX it is arranged so that the cathode is connected to the TX pin on the TTL adapter and the anode to the RX pin.Īn old faulty Ethernet cable was hacked about to make the connections. The signal pin used is pin 2, and typically orange. Ill try it out when it comes in and post back.
#MOTOROLA PROGRAMMING CABLE GM300 SERIAL#
Using an Ethernet cable with standard wiring, the ground connection uses pin 5 of the Ethernet connector, which is usually blue-white. RIB-Less Programming Program Cable for Motorola GM300 GM340 GM339 GM380 eBay I read somewhere that if you have a pc With a serial port, its best to use it rather than a USB, not sure why, but well see. A standard silicon signal diode such as the 1N4148 (almost anything will do), and an RJ45 Ethernet connector to fit the microphone socket.
![motorola programming cable gm300 motorola programming cable gm300](https://static-01.daraz.pk/p/23d964d18dfa6b8f66a253f37bf2e090.jpg)
It didn’t take long to reach success!Ī USB-TTL adapter such as those easily available on eBay was used, which cost around £1 (or a little more with genuine chip-sets on). and not the /24 I connected Control Station via USB cable to the PC. Document/File: motorola-radio-doctor-gm300.pdf, filesize: n/a. (Software, radio and MY existing GM300 programming cable shown is for demonstration purposes Only. This adapter connects to your existing RADIUS GM300 Maxtrac programming cable.
#MOTOROLA PROGRAMMING CABLE GM300 SOFTWARE#
The GM300 Radio Doctor piece of software did a good job at being able to program this ancient. CM200 CM300 PM400 Programming Adapter for Motorola Radius GM300 Maxtrac Cables New. Seeing they were available cheaply on eBay, and knowing the likely ‘guts’ of such a cable, I decided to experiment with some standard designs. welcome to the motorola commercial series customer programming software. The Motorola GM300 can be re-programmed quite easily to allow use on our Amateur Radio.
![motorola programming cable gm300 motorola programming cable gm300](http://www.fj45.com/images/RPC-M300-3.jpg)
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While experimenting with radios for the MMDVM Project (and here), I needed a programming cable for some Motorola GM340 and GM380 radios.Ī friend of mine had access to the programming software through his job, but couldn’t locate his programming cable for these radios.