Managing a multi-channel radio system is tough enough. When performance degrades or outages occur, the clock is ticking—and the cost of delayed diagnosis can skyrocket, especially for remote or difficult-to-access sites.
Monitor every transmitter and antenna from a single interface.
Spot degraded power or VSWR before it becomes downtime.
Add sensors, expand coverage, and connect to your workflow.
When your radio network scales, so does the risk. With more channels, more gear, and more at stake, guessing isn’t an option. Bird’s rack-mounted Channel Power Monitor (CPM) system gives you centralized visibility into every part of your RF chain—so you can respond fast and act with certainty.
Purpose-built for public safety, transportation, utilities, and large LMR systems, CPM turns performance data into clarity—and complexity into control.
Get Expert HelpMonitor up to 16 Channels at once—from individual transmitters to combiner outputs to antenna VSWR. All data feeds into a single, IP-accessible CPM hub.
SNMP traps, software alarms, and local contact outputs keep you informed—so your team can show up with the right tools once, instead of guessing blind.
Built to scale with multi-site, multi-channel systems, the CPM rack-mount system integrates seamlessly into your RF infrastructure, keeping vital communications online around the clock.
Choose from a range of directional and non-directional models to monitor forward power, reflected power, and VSWR—whether you’re measuring individual channels, composite signals, or inputs to your combiner.
See How to Stay Ahead of RF Failures—Before They Happen
Managing LMR system health doesn’t have to mean chasing problems or making blind site visits. In this quick video, see how Bird’s Channel Power Monitor (CPM) gives you real-time visibility, actionable alerts, and confidence in your RF performance—no matter how complex your network.
Bird’s CPM system is modular for a reason. Whether you're overseeing a single-site repeater or a multi-site trunked system, this guide helps you pick the right sensors and monitoring tools to match your operational needs.
If you don’t see your exact configuration listed, please contact us — we can help identify or create the right fit for your needs.
Showing 1 - 12 of 33 results
Showing 1 - 12 of 33 results
Make the right choice the first time—just share a few key details and we’ll match you with the perfect sensor.
Are you measuring transmit power, receive antenna health, or both? Do you need visibility per channel or for the entire system?
Share your operating frequency band(s) and the expected power levels at the monitoring point—this ensures the sensor is matched to your RF environment.
Tell us where the sensor will be placed (e.g., between combiner and antenna, at receive input), how many transmitters are involved, and if you require I/O or PTT integration.
Start Smart with Ethernet-Based RF Monitoring
Not every site needs a full rack-mounted CPM system. If you're working with fewer radios, limited space, or just want a fast, standalone setup—Bird’s Ethernet-based sensors deliver powerful insights without the extra infrastructure.
Whether you're supporting a backup site, remote location, or smaller-scale network, Bird's Ethernet solutions offer a plug-and-play path to smarter RF monitoring—without overbuilding.
Have more questions? Get Expert Help>
With the Bird CPM system, you can monitor VSWR and reflected power in real time using a 4043 directional sensor placed at the output of your combiner. If VSWR rises or reflected power spikes, you'll receive an SNMP alert or contact closure alarm—so you can act before failure.
Requires a 3141 Channel Power Monitor to view data and configure alerts.
Use the 4042 directional sensor. It measures individual channel power from the combiner output. Once programmed with your channel frequencies and bandwidths, it gives per-channel output data—ideal for identifying which TX is underperforming.
Requires a 3141 Channel Power Monitor to view data and configure alerts.
Yes. A full CPM setup typically includes:
The 3141 allows custom alarm thresholds for high/low power and VSWR. It supports hard contact relays and SNMP trap messages, so you’ll be notified immediately when conditions fall outside your set parameters.
Sensors alone don’t alarm—you need the 3141 to generate alerts.
Yes. Once your 3141 is on the network, you can access its web-based dashboard from any PC—no software or VPN required.
Just one IP address gives you complete visibility into your site.
When your radio system depends on uptime, the antenna isn't a “nice to have” to monitor—it’s the most vulnerable point in the chain. VSWR issues, reflected power, degraded cables—these don’t announce themselves. They just take your system down.
That’s why now is the right time to act.
Whether you're ready for a full CPM rollout or want to start smart with Ethernet-based sensors, Bird gives you the visibility to catch problems early—and the flexibility to grow from there.