Beacon Receivers Model 3434-CH — Extended C-band Beacon Receiver

Beacon Tracking Receiver

Tracking receiver for antenna step-tracking and automatic uplink power control.

The Model 3434-CH, Version 4, has an input of 3.4 – 4.2 GHz****, Digital Level reference setting, Ethernet connectivity with M&C control interface, and power-up temperature compensation for rapid signal acquisition. The 3434 series offers our proprietary Accu-trac search-and-acquire AFC feature with several search bandwidths up to ±800 kHz. 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 for use with either CW or BPSK carriers.

  • AFC disable option for wide data carrier applications
  • Digital level reference setting, -30 to -90 dBm on 0.5 dB steps
  • Accu-trac signal-tracking feature for high-drift LNB applications with selectable acquisition bandwidths up to ±800 kHz
  • RS-232/422/485 and Ethernet, control interface, all Standard / Front panel selectable
  • Dual signal strength output, two identical analog outputs for simultaneous antenna tracking and UPC control

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 or SSC GUI (via your computer) displays operating frequency, relative signal level, carrier lock or alarm, and input level.


Input Frequency 3.4 – 4.2 GHz
Input Level -30 to -90 dBm typical
Level Adjust Digital, 0.5 dB steps
Level Accuracy ±0.4 dB per step
±4 dB over entire range
Total composite input level -15 dBm maximum
Tracking Slope 0.5V/dB
Tracking Linearity ±0.25 dB
Frequency Selection 10 kHz steps
Min. input level for Lock -105 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
Modulation type CW or BPSK up to 8kbps
Output – dual signal strength analog output Modular socket & plug
M&C RS-232 & RS-422/485
Ethernet 10/100 Base T
Continuous data streaming option/streaming signal strength output via a dedicated RS-232 DB 9 connector
M&C Connector DB-9 Female & RJ 45 Connector
Dedicated DB9 with CDS option
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


*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

Sweep widths for Accu-trac signal tracking

For high-frequency drift applications. Accu-trac features are user-selectable from the front panel or in remote mode.
Disabled ±50 kHz ±75 kHz ±100 kHz ±150 kHz ±200 kHz ±250 kHz
±300 kHz ±400 kHz ±500 kHz ±600 kHz ±700 kHz ±800 kHz

Valid Options

AFC and Filtering
O Standard AFC and Standard 0.4 Hz output smoothing filter.
A No AFC – Use 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.
O 50 kHz pre-detection bandwidth.
5 25 kHz pre-detection bandwidth.
Input Connector on Rear of BTR/td>
S 50 ohm SMA female connector.
N 50 ohm N female connector.
B 50 ohm BNC female connector.
Q 50 ohm TNC female connector.
Blank No CDS
C Optional Continuous Data Streaming

Part Numbering
Typical part number: 3434-CH00N

Frequency Range Base Model Band AFC & Filtering Band-width Input Connector M&C
3.4 – 4.2 GHz 3434 CH O, A, S, or T 0 or 5 N, B, Q, or S Blank or C

Other frequency ranges are available.

SSC’s control GUI version 2.0 for our beacon receivers provides enhanced control features and additional monitoring tools, along with strip-charting for signal strength, AFC, and temperature. Version 2.0 also includes an event-triggered alarm feature that can send email notifications to your laptop or mobile device. Alarms can be triggered by signal strength, loss of signal, and AFC conditions.

Inclined Orbit Tracking