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Products Licensed Microwave Radio Telemetry and SCADA Modems Narrow Band 225 - 400MHz Spread Spectrum Radios

Narrow Band 225 - 400MHz Spread Spectrum Radios

Narrow Band 225-400MHz_0605

The family of military products are designed to meet the rigorous demands of military and government users worldwide. The 225-400 MHz is available as an OEM board level radio. The military products share the same features as our 900 MHz M-Series, including 32-bit CRC error detection with automatic retransmission, and single radio repeater. Our military products provide reliable data communications in the most adverse environments.


  • 25 kHz Channel Spacing       
  • Frequency Hopping       
  • High Speed –19.2 Kbps true throughput.       
  • Long Range – 60+ mile range with clear line of sight, ability to extend through repeaters.       
  • Error Free Communications – 32 bit CRC with automatic retransmission.       
  • Industrial Grade Specifications – 100% tested for full performance from -40°C to +75°C.       
  • Repeater function in a single radio.       
  • Improved supply voltage range and power consumption. Input voltage range is now 9.5- 30 VDC at full RF output power. Receive current is less than 250 mA @ 12 VDC.       
  • Separate diagnostic serial connector allows real time local diagnostics and setup menu access.       
  • Better diagnostics, including signal level in dBm and transmit current.       
  • RS485/RS232 Interface. In addition to RS- 232, the FGR Series is now available with a userprogrammable RS-232/RS-485/RS-422 interface.       
  • Noise Immunity – Superior performance in noise congested environments.       
  • Secure – proprietary spread spectrum technology prevents detection and unauthorized access. 


Frequency Range
225-400 MHz
Range, Line of Sight
60 miles
2/4 GFSK
Occupied Bandwidth
19 kHz
Spreading Method
Frequency Hopping or Single Frequency
Hopping Patterns
15 per Band, 105 total, user selectable
Hopping Channels
28,000 possible, maximum 64 or Single Frequency at one time
Hopping Bands
7, user selectable
-112 dBm for BER 1x10-6 2 level GFSK -104 dBm for BER 1x10-6 4 level GFSK
20 dB at fc ± 47 kHz (2nd IF)
System Gain
148 dB
Channel Spacing
25 kHz
Data Transmission:
Error Detection
32 bit CRC, Retransmit on Error
Data Encryption
Substitution, Dynamic Key
Maximum Throughput
19.2 Kbps— 4 level GFSK, 9.6 Kbps— 2 level GFSK
Data Interface
RS232/RS485/RS422 or TTL
Data Connector
10 pin header with locking ramp, 0.1 inch spacing, power/data connector. Separate Diagnostics conncetor
Power Requirement:
Operating Voltage
9.5-14 VDC
Current Drain
Mode9.5 VDC12 VDC
Transmit3.2 A2.5 A
Receive315 mA250 mA
General Information:
Operating Temperature Range
-40°C to +75°C 100% full performance tested
128.0 mm L x 61.8 mm W x 19.7 mm H 
<200 g
External Antenna Connector
SMA. Professional Installation Only
0 to 95% non-condensing