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Programming software for Motorola GM300 (download here)
Attached is the software for programming and aligning the Motorola GM300 radios. This is DOS software and you need a real serial port. A USB-Serial adapter will not work.
just for those interested, if you dig into OTVDM or VINEVDM (i had better luck with otvdm), you can enable 16 bit applications to run on a 64bit system. I was running both the old and new CPS for a m1225 on windows 7 using otvdm using a usb serial adapter. Been so long that I can hardly remember doing it, but I know it works.
Please advise me to what is a good replacement mic for my SR-497HPC... Answer: 497 is "wired like Cobra", so many choices available. That radio does not need a power mic, so purchase a stock "coffin style" mic with a decent cord, like the ones that Astatic uses. The Superstar DM-507 is my go-to. https://www.ebay.com/itm/3050474478...adANq91JSiEEnz8EGqPJRBloTgEyaVsBoCtoMQAvD_BwE $12.99 + .99 cent shipping.
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