The genuine motorola radius gp300 programming software is available to download from our website. Driver 2 sq2500 for Windows 7. Attached is the software for programming and aligning the motorola gm300 radios. However this depends on your version of. Due to the FCC Narrowbanding mandate in the United States, product specifications and brochures for Motorola Solutions two-way radio products may indicate 25 kHz/12.5 kHz analog/digital operation which may not be the standard mode of operation at the time of shipment after Jan.
All of this information came from the Motorola Radius Service Manual 6880101W58A circa 1988/1989 with lots of revision sheets. All of the boards listed below are used in the MaxTrac mobile radios; see the MaxTrac Detailed Service Manual for schematics. All electronic parts are interchangeable except the firmware, which governs the radio's model number and features. (You can replace the EPROM with MaxTrac firmware but then you'd need to use MaxTrac software to program it, and the model number would change.) The front panel labels and volume control knob are slightly different. The RADMBL (HVN9173 or HVN9174) DOS-only RSS package is used to program the Radius radios. These radios are all conventional; trunking was only available on the MaxTrac models.
M100 series have 2 modes. M206 series have 6 modes. M214 series have 14 modes and seem to be the only ones that offer Scanning. They require an expanded logic board (one with firmware on an EPROM). Motorola introduced the M208 and M216 series, which have 8 and 16 modes respectively. The model numbers have Revision letter B for the 8 and 16 mode radios. Channel Steering is also available on radios with the 16-pin accessory jack. The only Radius firmware IC is HLN9277A.
This is not meant to be an all-encompassing, know-all, do-all article about Motorola Radius radios. As such, there may be additional, newer information available from other sources. It's just a summary of information extracted from the above-mentioned service manual. For all intents and purposes, the Radius models mentioned here are identical to the MaxTrac 50, 100, and 300 models documented elsewhere. A lot of assemblies can be mixed, matched, and swapped between the two radio series. The radios and RSS are no longer sold but some of the more common parts are still available from Motorola.
M100 series have 2 modes. M206 series have 6 modes. M214 series have 14 modes and seem to be the only ones that offer Scanning. They require an expanded logic board (one with firmware on an EPROM). Motorola introduced the M208 and M216 series, which have 8 and 16 modes respectively. The model numbers have Revision letter B for the 8 and 16 mode radios. Channel Steering is also available on radios with the 16-pin accessory jack. The only Radius firmware IC is HLN9277A.
This is not meant to be an all-encompassing, know-all, do-all article about Motorola Radius radios. As such, there may be additional, newer information available from other sources. It's just a summary of information extracted from the above-mentioned service manual. For all intents and purposes, the Radius models mentioned here are identical to the MaxTrac 50, 100, and 300 models documented elsewhere. A lot of assemblies can be mixed, matched, and swapped between the two radio series. The radios and RSS are no longer sold but some of the more common parts are still available from Motorola.
Introduction.
The Motorola GM300 can be re-programmed quite easily to allow use on our Amateur Radio bands. The radio is made in both a VHF and UHF versions, and makes an excellent 2mtr or 70cms mobile/base station radio.
Most of the radio's I have worked on have originally been 8 channel units. These can be modified to operate on 16 channels quite easily.
Programming Software For Motorola Gm300
The programming interface can be made for a low cost. All it consists of is a RS232 to TTL level converter, that connects between the serial port of your PC and the radio's microphone socket.
Amateur Radio Conversion.
The radio requires the Motorola Software which can be found if you ask around or search for it on the FTP sites on the Internet. If you can't find it then try your local Motorola dealer who should be able to help at a small cost.
Motorola Radius Gm300 Programming Software
You also have to make an interface, or purchase one.
To program the radio onto the Amateur band, you can find some versions of software that have been hacked into allowing frequencies to be entered to bring the radio into the amateur bands which normally are just bellow the original working frequency. However this depends on your version of software, if it's a un-hacked version then you have to press the key down when entering the frequency. You must release the key when entering the decimal point. For example to program 433.500MHz you will enter the following: $££.%)) on a English layout keyboard. (This is 433.500 with the held down. Fill all of the 0's in the frequency field. This example is the same for both the VHF and UHF GM300's.
16 Channel conversion. (for 8 channel radio's only)
Motorola Radius Gm300 Programming Software Download
To program the radio for 16 channels all you need to do is edit a file called GM300.MDF. You do this with the help of a Hex editor such as Hex Workshop. The file you need to modify is called GM300.MDF and can be found in the main directory of the Motorola software. Keep a backup of your original GM300.MDF file, just in case you make a mistake.
I have made a small video that shows the Hex Workshop screen during the modification. This should help you understand the procedure of editing the file which when complete will give you 16 channels. Click below to download.
Java install 1618 error. Procedure
Motorola Radius Gp300 Programming
- Get a copy of Hex Workshop
- Start the Hex Workshop program and open the file GP300.MDF to begin editing.
- Go to 'Tools', and the 'Generate Checksum'.
- Make sure 'Entire Document' and also 'Decimal' are ticked. Then press 'Generate'.
- Look in the 'Checksum-16' box, in my version of software for example this results in a checksum of 5514. (yours may be a different number depending on the version of Motorola software)
- Write this number down, as you need it later.
- Press 'Cancel' to return to the main window and your next step.
- Go to 'Edit' and then 'Find'. A pop-up window appears.
- You need to enter the model number of your radio. For e.g. M34GMC00D3AA.
- When you enter the model number leave off the last two letters(AB on my radio).Make sure 'ASCII' is ticked.
- When you press 'Find Next', you will see your model number highlighted.
- If you count 8 numbers after the highlighted section, you should see the number '08' as long your radio is originally a 8 channel set.
- Edit the '08' to '10' (note 10 in Hex is equal to 16 in decimal).
- You now need to edit the start of the program, to allow the software to run.
- In the first few lines look for a Hex number that you can easily take away 8 from.
- In my software at address 00000040 you will see the number '78' on the right.
- Edit this to be '70'.
- Now you must do a final checksum and make sure it equals the original value.
- If this is the same, then replace you original file with the modified file.
- Try to reprogram your radio with the extra 8 channels to give you 16 channels.