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 Connector, 50 Ω female

Frequency range: 76.0 / 108.0 MHz

Tuning step: 50 or 100 kHz selectable

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

Input level range: -75 / -10 dBm *HS version

Internal attenuator: 0 - 30 dB (steps of 1 dB)


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

Protocols: SNMP protocol, HTTP, Modbus, RPTC/Modbus over RS485

Key: Reset tact switch (recessed)

Headphone: 3.5 mm Phone Jack Audio Output

(Alarm output and Analog output available instead of RS485)

Alarm output: Open drain max 24V/100mA

Analog output: 0 - 5Vdc


Alarms: SNMP Trap with programmable thresholds

Setup: Through Web page and SNMP

Software: Remote upgrade capability

High Sensitivity for direct antenna input


Web interface: Monitoring and set-up

Led Indicator: Multicolor


Operating conditions: 0 to 60 °C, 0 to 95 % non condensing

Case: Tin plated steel enclosure

Dimensions: 103 x 58 x 28mm

Weight: 200g


RSSI level: dBm or W, Accuracy ±1 dBm

Audio Level: L, R Indicated for “silence” detection

RDS Decoding: PI, PS, BER, TP, TA, MS, PTY, DI, CT, RT, Group Counter


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 / 300 mA


BiRDS Standard version

BiRDS-HS High Sensitivity version