Beacon Tracking Receivers Model BR23-L — L-band Beacon Receiver

Please note: Updated beacon receiver models and related information is found at this Radeus Labs web page.

Beacon Tracking Receiver

The Model BR23-L, version 4 firmware, offers the full L-band range of 930 to 2300 MHz, digital level reference setting, and M&C. Frequency selection on 10 kHz steps may be accomplished from the front panel or via remote control. Pre-detection noise bandwidth of 50 kHz (or factory option of 25 kHz) facilitates accurate tracking at very low C/N levels.

  • Wide bandwidth, 930 – 2300 MHz standard
  • Digital level reference setting, -40 – -100 dBm on 0.5 dB steps
  • RS-232/422/485 and standard

The output of the beacon receiver is a DC voltage proportional to the input signal level to facilitate both antenna tracking control and automatic power control. A Loss-of-Carrier indicator is provided in the event the tracking signal is lost. Form “C” relay contacts provide an external Loss-of-Carrier alarm. A front panel VFD displays operating frequency, relative signal level, carrier lock or alarm, and input level.

Also see: data sheets.


Input Frequency 930 – 2300 MHz
Input Level -40 to -100 dBm typical
Level Adjust Digital, 0.5 dB steps
Level Accuracy ±0.4 dB per step; ±4 dB over entire range
Tracking Slope 0.5 V/dB
Tracking Linearity ±0.25 dB
Frequency Selection 10 kHz steps
Min. input level for Lock -110 dBm
Input Connector Type “N” Female, 50 ohm*
Threshold 4 dB C/N for acquisition; < 1 dB C/N for carrier lock
Tracking Response 0 to +10 VDC over 20 dB input range standard; other ranges optional****
Alarms Form-C relay contacts
AFC ±25 kHz**
Noise Bandwidth 50 kHz
M&C RS-232 or RS-422/485 – Continuous Data Streaming option
streaming signal strength output via a dedicated RS-232 DB 9 connector
M&C Connector DB-9 Female
Output Connector Modular socket & plug
Dimensions 1 RU, 19″ x 16″ x 1.75″
Prime Input Power 90 – 260 VAC, 47 – 63 Hz, auto-sensing, 45 watts max
LNB Power +24 Volts @ 1 Amp available on center conductor; selectable In/Out***

* Other input connectors available please contact SSC
** Other AFC options available please contact SSC
*** Other power options available please contact SSC
**** Other ranges available please contact SSC

Valid Options

AFC and Filtering
O Standard AFC and standard 0.4 Hz output smoothing filter.
A No AFC – for tracking Wide Data Carriers. Standard 0.4 Hz output smoothing filter.
S No AFC and No 0.4 Hz output smoothing filter.
T No 0.4 Hz output smoothing filter. Standard AFC.
0 50 kHz pre-detection bandwidth.
5 25 kHz pre-detection bandwidth.
Input connector on rear of BTR
N 50 ohm N female connector
B 50 ohm BNC female connector
Q 50 ohm TNC female connector
S 50 ohm SMA female connector
Optional continuous data streaming

Part Numbering
Typical part number: 3430-LOON

Base Model Band Frequency Range AFC & Filtering Band-width Input Conn
BR23 L 930-2300 MHz 0, A, S, or T 0 or 5 N, B, Q, or S

Other frequency ranges are available.

GUI: enhanced control features and additional monitoring tools, along with strip-charting for signal strength, AFC, and temperature. Version 2.0 includes an event-triggered alarm that allows email notification to your laptop or mobile device. Alarms can be triggered by signal strength, loss of signal, and AFC conditions.

Inclined Orbit Tracking