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.
This quick diagram shows how Bird’s CPM system maps to your RF chain—so you know what to monitor, where, and why.
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.
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Managing LMR system health doesn’t have to mean chasing problems or making blind site visits. In this quick video, see how Bird’s CPM gives you real-time visibility, actionable alerts, and total confidence in your RF system's performance—no matter how complex the network.
Don’t see what you need? We’ll help you find—or build—the perfect fit.
Note: Part numbers end in -xxyy, where xx
= RF input connector and yy
= RF output connector.
Connectors must be from the same family — N or 4.3/10 and cannot be mixed.
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.
Ethernet-Based RF Monitoring
Not every site needs a full rack-mounted monitoring system. If you're working with a few radios, limited space, or just want a 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.
If uptime matters, your antenna is the point most likely to fail. VSWR problems, reflected power, and worn cables don’t raise flags—they just take your system down.
The best time to protect your system is before it fails. Bird equips you to catch problems early—and to adapt as your mission grows.