Radio FM Monitor

BiRDS: FM probe with RDS decoding and audio monitor

The BiRDS is our new probe suitable for reliable monitoring of the FM signals. Compact and versatile it provides accurate measurement of RF level, audio levels as well as the RDS decoding. The audio level monitoring make the BiRDS probe suitable for use as silence probe and the RDS parameters monitoring allows to easily verify if the right program is on air.

It supports SNMP protocol and can be configured in order to send alarm traps if one or more readings are outside the desired range. All the parameters and options can be set via web browser.

PoE feature make the probe very easy and quick to install.


Input connector: BNC 50 Ω female

Frequency range: 76.0 / 108.0 MHz

Tuning step: 50 or 100 kHz remotely selectable

Input level range: -30 / +20 dBm (standard version)

Input level range: -75 / -10 dBm (HS version)

Internal attenuator: 0 - 30 dB (steps of 0.5 dB)


Ethernet: RJ45, 100Mbit/s, PoE class 0

Protocols: SNMP protocol, HTTP, Modbus (with RS485 option)

Led Indicator: Multicolor

Key: Reset tact switch (recessed)

RS485: Available optionally for custom applications


Alarms: SNMP Trap with programmable thresholds

Setup: Through Web page and SNMP

Software: Remote upgrade capability

High Sensitivity for direct antenna input


Operating conditions: 0 to 50 °C, 0 to 95 % non condensing

Case: Tin plated steel enclosure

Dimensions: 103 x 58 x 28mm

Weight: 200g


RSSI level: dBm, Accuracy ±1 dBm

Audio Level: L, R Indicated for “silence” detection; no modulation measures

RDS Decoding: PI (Program identification)

RDS Decoding: PS (Program service name)

RDS Decoding: RT (Radio text)


PoE: PoE 802.3af (class 0).

Power can also be supplied through a 48 Vdc / 0.25 A PoE power injector.

Auxiliary power input: 12 Vdc / 0.5 A


BiRDS Standard version

BiRDS-HS High Sensitivity version