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Motorola GP300 Compatible 2 Way Radio Battery Eliminator
Problem for Motorola GP300 Compatible 2 Way Radio Battery Eliminator

GP300 Radios




By spodocomodo on Jan 07, 2009

" "
Hi there,

I wonder if you can help me, I recently acquired 3 GP300 radios all programmed to different channels, I then purchased a rib-less programming RS232 cable which came with software including a windows version however, I cannot get the radio to talk back on the comms port, I have tried various baud rates and fiddles including the comms port utility, do you know if I can program the radios using a Win98 boot disc in DOS mode?

Thanks and regards

Dave W
Comments:

Jan 08, 2009

- Hi Benimur,

Thanks for your prompt response and suggestions, I've tried adjusting the bios settings and also slowing my pc down with cpugrab and using dosbox, still no luck I'm afraid, the Maxton RPC-M300 interface shows data flow with a green LED which flashes as the PC attempts to access the radio so I'm guessing there is out-going serial comms just nothing back from the radio.
Can't think what I am doing wrong here.
Going to try your Win98 start-up disc idea next.
Thanks again for you help.

Best regards

Dave W

Jan 10, 2009

- Thanks to the both of you for asking, I have now managed to progam the radios, I needed to use a Win98 boot disc then default into DOS, select com 2 then program the radio from there before cloning the settings onto the other radios.

Thanks again

Dave

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Clarification Request

Posted by Benimur on Jan 07, 2009

Hi and welcome to FixYa,

Initially, I believe you would have better chances running pure DOS (F5/8 before Win98 starts, I think 6.21 DOS version). I seem to remember also, that I always use COM2 perhaps because COM1 was often reserved for the serial mouse then. Having said that, you may want also to check in the CMOS/BIOS if there is even a COM2 or if it is enabled and that it is set to use IRQ 3 and I/O 2F8H.

Would appreciate an update, curious too.

Good luck and Thank you for using FixYa.

Best Solution

posted on Jan 10, 2009
Very Helpful)

DinoVass
DinoVass

Rank: Apprentice 
Rating: 100%, 1 votes
I recommend you **** can the USB cable and get a RIB and Rib cable. The GP300 Motorola software is available online for free (I can give you the web page address) and works just like the real Motorola software. I have programmed at least 20 GP300s with it with no issues. A RIB is the only way to go. Everyone has nothing but trouble with USB cables. Particularly with newer radios like the CP200.
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Solution #2

posted on Jan 10, 2009
Not Rated)

Benimur
Benimur Expert Moderator

Rank: Guru  Motorola Expert
Rating: 88%, 3812 votes
Hi again,

For some reason my initial post for clarification was deleted. In any case, any updates/developments?

Cheers.

Comments:

Jan 11, 2009

- Congratulations. The missing initial post was on the money on F5/8 & COM2.

Thank you for posting back.
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