Programming the GM300 on Windows 7

I have finally found a way to program the GM300 (and possibly other types of Motorola DOS only radios) on Windows 7. This is courtesy of this website:
This is using a DOS emulator call DOS BOX and the original GM300 software which will allow you access and change the I/O pin settings and tune/align the radio when necessary. So far it is has worked flawlessly on my GM300's. I will be trying other types of software such as Maxtrac and Spectra soon.

[WilliamHiggins]

I just programmed a Motorola Maxtrac radio using this information on my new AMD Ryzen 7 - 8 core Win 10 Pro computer. I had never seen the website you referenced so I never knew the specific DOSBox settings I needed. Thank you so much for the "191 cycles" tip. That was the single piece of information that I had been missing all this time. I used an old USB to serial cable I bought at a garage sale for $1.00. It just happened to be an FTDI chip cable so it worked like a champ. I can now retire my old DOS / Windows XP laptop that was about to die anyway! Thanks again!

[GGTI]

Excellent ! following your tutorial I got it to work first time using a 3Ghz dual core PC running windows 10 Professional. Many thanks for sharing this info and creating the video.

[scarpaz]

Thanks! Will be trying soon on my M120 and M130 radios!

[KaliBlaz]

dude you saved me a whole day of googling this shit, thanks a lot, i have the same radio as you GM300 and bunch of HT1000 that i have got from an auction, so far i am knocking my head trying to get them to send and receive.

[Ibelieve]

You really really helped me big time
I was getting the error I had no idea that the 191 had to be true.i have the radius sm50

[Ibelieve]

I have the Motorola radius sm50 and I need to change the pl tone.its a gmrs repeater.your a life saver man I looked all over for why the #7 opcode error wrax810
Kn4gtu

[AAPR]

I could never get dosbox to work properly, congrats !

I have radio doctor working fine on vista prem

[sparcnz]

Hi, Great video, however the link to the web site for the DosBox plus info on setting it up to read the GM300 is no long available. Shame this has happened with the number of GM300 and other radios out there.

[faizanurrahman]

Hi, what is the exact solution for Serial bus error #2- no acknowledgment?

[karesponders]

thank you for sharing hope it make something good to my gm300 radius my main Responders Action Tv 73s DV7BKG

[JDtheEE]

The website id down, but I have the teps documented, and hopefully I will put them up on my channel soon. 73 K5DVT

[bkamleshbhairajak]

WHAT IS POWER SUPPLY VOLTAGE FOR PROGRAMING DEVICE?

[Subgunman]

Any recommendations as to a USB to serial adapter?

[matheuscarvalho]

Hey, mate.

First of all thanks for the video. But your download link for the gm300 software is down. Please send me anotherl ink or reupload.

[BF-nqmx]

I'm getting "Directory c:\gm300v.5 doesn't exist" messages. I'm entering the mount commands correctly. I'm following the instructions the best I can. The Com port settings are correct. I tried copying a few (from separate download sources) GM300 files, one at a time, into DosBox. I tried GM300 version 4 instead of 5. What am I missing?

[craftsman]

Thanks for the video. I'm hoping to get this to would with my GTX using the correct software. Tried to check out the link and it goes to a page that requires you to install an extension to your browser. Is that right?

[shoutout]

sir, what did you do in order for the radio will be read by the software I already adjust the cycle to 191, whats the power cycle radio means?
need your help sir

[Ibelieve]

Serial1=directserial realport :com 1
Will assign a port as long as the device is using com1 and the device is turned on and connected to computer.now I am using com 1 as an example.if your device manager said com 2 then serial would be com 2

[KaliBlaz]

where did you get that maxton adapter, cant seem to find it!

[nguyenhaiuong]

Why can't I access the website above?