2-Way ALERT2 Base Station Transceiver – Model 3345-24

SKU: 3345-24 Category: Tag:


  • Single modem for receiving messages and transmitting command messages via ALERT2
  • Received Signal Strength Indicator (RSSI)
  • Visual indication of successfully decoded
  • ALERT2 messages
  • Integration with OneRain’s Contrail® software platform through a single Ethernet connection
  • Compact design for desktop or rack-mount installations

High Sierra Electronics’ 2-Way ALERT2 Base Station Transceiver facilitates communication within your two-way ALERT2 network by providing a single 2U desktop/rack-mount modem for receiving messages and transmitting command messages via ALERT2. It incorporates the same innovative packaging, new decoding technology and RSSI features jointly developed for the ALERT2 Decoder. Integration with Contrail software (by OneRain) is managed through a single Ethernet connection.

Unique features include an informative Receive Signal Strength Indication (RSSI), conveniently displayed on a front panel LCD meter.

Understanding RSSI for each gauge site is a valuable tool in determining site and system health and for troubleshooting. Planned development will encode RSSI readings into S messages for storage of a running history of RSSI by transmit site in Contrail software, to enable early detection of degraded system performance. Front panel Detect and Decode LEDs along with RSSI provide a visual indication of successfully decoded ALERT2 messages.

An IP accessible graphical user interface is provided for the Decoder where many of its features can be accessed and configured. This full-featured WEB UI allows the user to view received ALERT2 messages as they arrive. It also provides access to logged data, download of logs, and configuration of all relevant parameters (except for IP address and hostname).

The Model 3345-24 can also receive both inverted and normal modulation polarity ALERT2 signals.



Radio Frequency Range VHF 135 to 174 MHz; UHF 406 to 470 MHz (up to 8 independent TX/RX pre-programmed frequencies, switch selectable)
Data Format ALERT2
Transmit HSE 3512 API Commands over Ethernet
Output Power 5 Watt (switch selectable), PTT test switch provided
Squelch Open -112 dBm, Close -114 dBm
Speaker Monitors Rx Channel
Audio Output for SINAD 1/8 inch Phone Jack
RSSI 9-position LCD Meter Indicates -60 dBm to -120 dBm
Operating Voltage 9 to 15 VDC, reverse polarity protected
Power Consumption Active <220 mA, <180 mA Standby (at 12.5 VDC)
Power Connector 2 each 3-Pin MS Connector (power source and battery back-up)
Antenna (VHF) Connector BNC (F)
Antenna (GPS) Connector SMA (F)
Ethernet Connector RJ-45
Operating Temperature 22° to 122° F (-30° to 50° C)
Dimensions 2U Chassis, removable rack ears included
12.5 x 13 x 3.5 in (31.75 x 33 x 8.89 cm) (W x H x D)
Weight 8 lbs (3.63 kg)
Shipping Weight 10 lbs (4.54 kg)

Ordering Guide


Model 3345-24 2-Way ALERT2 Base Station Transceiver; Includes: HSE 2U Desktop/Rack
Mount Enclosure, Encoder and Decoder Subsystems, VHF 148 to 174
MHz Radio, (Specify Radio Frequency)


Documentation & Support

Contact us for support.



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