I supervise a couple handfuls of passenger shuttles for a company, one of our buses has a Motorola Radius GM300 (M/N M34GMC29C3AA). When I got the bus I noticed the radio didn't work, after some investigative work, I replaced the fuses and splices and now its on. (Fantastic right?!) Only issue is now there is only one channel displayed, with no response from changing channel up or down, and when put into scan mode nothing happens. Is there a fix to this? Our other shuttles run on our channel 7 and I would need to at-least get this radio to work with the native buses. Any hope?
To add to what Mike mentoned, most GM300's are wideband although a few were made narrowband. Since 1/1/13, 99.9% of Part 90 licensees in VHF and UHF are required to be using narrowband gear only. Look at your FCC license and it will tell what Part the license falls under.
Based on the model number you provided, it is a wideband only radio and needs to be replaced with a narrowband compliant radio. If there are other older radios in the fleet, they have to go, too. Hopefully the license holder modified the license for narrowband
All this stuff got chewed on extensively several years ago prior to the 1/1/13 deadline.
FWIW, if there is a complaint, and your company is involved, the FCC fines for non-compliant operation start in the tens of thousands of dollars and go up from there. If the FCC license was never modified to narrowband, they will catch up with the licensee eventually.
If you need more info, just search on narrowband here on RR, especially in the Motorola section. There are dozens if threads describing in great detail what narrobanding is all about.
Get a new radio as quickly as possible.
