ALERT2 Decoder Series – Model 1012

SKU: 1012-XXXX Category: Tag:

The Model 1012 ALERT2 Decoder is entirely our own design and technology.


  • Received Signal Strength Indicator (RSSI)
  • Visual indication of successfully decoded ALERT2 messages
  • Integration with OneRain’s Contrail® Base Station and Contrail® Server software platforms through a single Ethernet connection
  • Compact design for desktop or rack-mounted installations

High Sierra Electronics’  2U desktop/rack-mount Model 1012 ALERT2 Decoder is completely of our own design. All ALERT2 protocol processing is handled using technology developed by HSE and its sister company, OneRain.

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 OneRain’s Contrail Base Station and Contrail Server, 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.

The Decoder features an IP-accessible graphical user interface (GUI) where users can access and configure many of its functions. With this full-featured WEB UI, users can view received ALERT2 messages as they arrive. Additionally, users have access to logged data, download of logs, and configuration of all relevant parameters (except for IP address and hostname).

The 1012 Decoder 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 pre-programmed frequencies, switch selectable)
Data Format ALERT2
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 Connector BNC Female
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 1012-xxxx ALERT2 Base Station Decoder; Includes: HSE 2U Desktop/Rack Mount Enclosure, Decoder Subsystems, VHF 148 to 174 MHz Radio, (Specify Radio Frequencies)



Datasheet 1012 ALERT2 Decoder Series 285.03 KB 72 downloads




Manual 1012 Series ALERT2 Decoder 1.79 MB 94 downloads


You may also like…