SB2025NT-C P25 Base Station Repeater 800 – 825 MHz Rx / 850 – 870 MHz Tx ST Band 50 Watt DC Powered (13.8V) 12.5 / 25 kHz Channel Spacing


The SB2025NT-C Base Station offers market-leading dual-mode P25 conventional and analogue performance in a robust, reliable yet compact 2U form factor. Designed and built to exceed industry standards, this base station features a digital fixed station interface (DFSI) enabling economic deployment and simple remote management.


The combination of advanced component surface mount technology, rugged machined module casing and optimised PA heatsink, ensures that the SB2025NT-C base station offers outstanding performance and reliability under the harshest conditions.

The sensitive receiver features a wide switching bandwidth while maintaining good blocking, intermodulation and adjacent channel performance. The broadcast transmitter exciter module has very low spurious emission levels and is followed by an efficient RF power amplifier.

  • A wide range of frequency bands is available
  • Individual channel programmable parameters, including frequency, power, NAC/TGID, RF mode and channel bandwidth
  • Optional feature upgrades are available using software keys
  • Easy to deploy base station with intuitive setup and simple remote management
Frequency Bands148-174 MHz, 400-435 MHz, 435-470 MHz, 763-775 MHz (TX), 793-805 MHz (RX+), 850-870 MHz (TX), 805-825MHz (RX)
Channels255 DFSI selectable
Channel SpacingAnalogue – Programmable 25 / 12.5 kHz / Digital – 12.5kHz
Antenna ConnectionsRx, Tx both N-type female
ModulationAnalogue – Direct FM two-point method / Digital – C4FM
Operating Temperature– 30 to +60˚C (-22˚ to 140˚F)
Physical Size2RU Height x 19” rack mount
Supply Voltage13.8 +/- 20% or optional AC mains input
Frequency Stability1.5PPM
Modulation FidelityLess than 3%
Power Output100W
Symbol Deviation1.8kHz
Audio Bandwidth300Hz to 3000Hz (+1,-3dB)
DistortionLess than 2% @ 60% deviation
Intermodulation ImmunityBetter than 82dB blocking better than 100dB at +/- 1MHz point
SensitivityBetter than – 117 dBm for 12 dB SINAD, typ -120 dBm. P25 – Better than – 117 dBm for 5% BER

• Front panel status indicators • DFSI interface option for IP connected dispatch console • Mixed mode repeat – analogue and digital • NAC can be unchanged or defined • Remote diagnostics • Transparent P25 repeat – passes encrypted voice transparently

• 4-wire analogue dispatch console interface (via central NI) • SNMP traps

Additional information

Weight 3 kg