The Motorola CM300 mobile radio is the only model in the Commercial Series that connects a two-way radio directly to a telephone line. A customer calls the office landline. The dispatcher patches the call through to the driver’s CM300 in the truck. The driver answers by pressing the microphone button. No cell phone. No call forwarding. No second device on the dashboard. For taxi fleets, field service vans, and delivery operations that still receive phone-in orders, this feature eliminates an entire communication layer.
Beyond telephone interconnect, this 32-channel telephone interconnect radio inherits every feature from the CM200 and CM160 in one chassis. Quik Call II selective calling silences the radio until the dispatcher’s tone sequence opens the speaker. Priority Scan monitors an emergency channel in the background. The Time-Out Timer and Busy Channel Lockout prevent stuck-mic and double-transmit collisions. The 8-character alphanumeric display shows channel names, not numbers. And the housing itself steps up: a die-cast aluminum chassis under a polycarbonate shell dissipates heat at 45 watts of continuous transmit duty, something the plastic-only CM-series bodies cannot match. For fleets that want the full analog toolkit, the CM300 is the model with nothing left on the option sheet.
Description
We supply original Motorola Solutions products through our authorized distribution channel. Every unit includes factory packaging, original accessories, and full manufacturer warranty eligibility. Motorola®, MOTOTRBO™, and APX™ are registered trademarks of Motorola Solutions, Inc.
A dispatcher fields a phone order. The customer is on hold. The dispatcher picks up the radio mic and calls the nearest truck. That workflow has a gap: the dispatcher must relay information from the phone to the radio manually. The Motorola CM300 mobile radio closes that gap. It patches the telephone call directly to the driver’s cab speaker.
Telephone Interconnect: The Dispatcher’s Phone Becomes the Radio
Most commercial mobile radios are islands. They talk to other radios. They do not talk to the telephone network. The Motorola CM300 mobile radio changes that with a telephone interconnect interface. A dispatcher answers a landline call at the office. With a single command, the audio is routed through the repeater to the CM300 in a specific vehicle. The driver hears the customer’s voice. The driver responds through the radio microphone. The customer hears the driver. No relay. No misquoted address. No callback loop. This feature alone has kept CM300 units in service with taxi companies, plumbing dispatchers, and fuel delivery fleets long after the model was discontinued.
Die-Cast Chassis: Heat Management for the High-Power User
Transmitting at 45 watts for extended periods generates real heat. Plastic radio bodies trap it. This CM300 die-cast mobile transceiver uses an aluminum die-cast internal frame. The chassis acts as a heat sink, drawing thermal energy away from the power amplifier and radiating it through the rear fins. A taxi driver running continuous dispatch calls across a 12-hour shift will not experience the power fold-back or reduced range that thermal throttling causes in plastic-housed radios. The polycarbonate outer shell handles impact and UV exposure. The metal inner frame handles the thermodynamics. MIL-STD 810 certification covers both.
Privacy Mode: When Two Drivers Share One Channel
Shared channels create awkward moments. A supervisor issuing a corrective instruction does not want the entire fleet listening. This privacy mode analog radio introduces a simple but effective solution. When activated, the radio transmits a sub-audible tone that mutes every other radio on the same frequency except the intended recipient. It is not encryption. It is operational privacy. Combined with two dedicated memory channels for quick-access favorites, the CM300 gives the driver a personal workspace within the fleet’s shared frequency plan.
Technical Specifications and Warranty
Every Motorola CM300 mobile radio ships with a compact microphone, mounting bracket, DC power cable, and warranty coverage.
- Frequency Bands: VHF (136-162 / 146-174 MHz) or UHF (438-470 MHz)
- Power Output: VHF 25-45W / UHF 25-40W
- Channels: 32 channels
- Display: 8-character alphanumeric LCD
- Signaling: Quik Call II selective calling, DTMF encode
- Privacy: Privacy mode with sub-audible muting tone
- Scan: Priority Scan with dedicated emergency channel
- Safeguards: Time-Out Timer, Busy Channel Lockout
- Construction: Die-cast aluminum chassis, polycarbonate outer shell
- Audio: 4 W internal speaker, front-facing
- Quick Access: 2 memory channels for favorite frequencies
