• High power output (selectable from 20 W – 250 W)
  • SNMP diagnostics and alarms
  • 929 – 932 MHz Band Coverage
  • Remote firmware upgrade capability
  • 110-250 VAC, 24 VDC and -48 VDC versions available
  • FCC and ACMA approved


Multiple Paging Protocols
The transmitter can be used with all industry standard POCSAG and FLEX paging formats.
Output Sniffer Port
A separate port with output power relative to the transmitter output allows a diagnostics module to check the outgoing RF message for integrity and transmit power level.
Absolute Delay Correction
The transmitter absolute delay setting can be configured for multisite networks to account for different upstream paths from the paging terminal to the transmitter sites.
Frequency Offset
Configurable frequency offset allows for multi-site frequency planning to eliminate ‘zero beating’ and RF nulls.
Remote Diagnostics
Windows™ software allows remote Ethernet connection to the transmitter for configuration, diagnostics and firmware upgrade.
Smart Protection
Configurable alarm thresholds and transmitter actions allows user configurable levels of automatic protection for on-site equipment.
Integrated Isolator
Integrated fan cooled and temperature controlled isolator means a damaged or missing antenna system can be remotely diagnosed.
Superb environmental control, improved amplifier efficiency and a design optimised for reliability makes the RFI-148-250 one of the most reliable high-powered paging transmitters available.

19” Rack mount, 4RU high,
480mm x 395mm x 177mm
Weight: 12.5 kg – 14 kg (model specific)
Construction: Welded and passivated mild steel, aluminium powder coated front panel


Frequency Range: 929 MHz to 932 MHz
Duty Cycle: Up to 100%
Transmit Power: 20 W to 250 W software selectable in 1 W steps
Channel Bandwidth: 25 kHz, 20kHz, 12.5kHz
Frequency Raster: 25 kHz, 20 kHz, 12.5 kHz, 10 kHz, 6.25 kHz, 5 kHz
Frequency Stability: 1ppm standard
(external reference input available)


Operating Voltage:
AC:100 VAC to 250 VAC, 50 to 60 Hz
DC: +20 VDC to +31.2 VDC (24 VDC version)
-40.5 VDC to -57 VDC (-48 VDC version)
Operating Current (AMCA, FCC):
– Transmit 250W 17.28 A @24 VDC
– Transmit 100W 11.58 A @24 VDC
– Transmit 25W 5.85 A @24 VDC
– Standby 0.60 A @24 VDC
– Transmit 250W 10.31 A @-48 VDC
– Transmit 100W 6.51 A @-48 VDC
– Transmit 25W 3.42 A @-48 VDC
– Standby 0.50 A @-48 VDC
Operating Temp: -30 to +55 deg C
Operating Humidity: Up to 95% non-condensing relative humidity



Data Interface: Asynchronous POCSAG, Synchronous ERMES / FLEX
POCSAG: 512 / 1200 / 2400 (2-FSK)
FLEX: 1600 / 3200 / 6400 (2/4 – FSK)


Frequency Reference: Internal (TCXO) or external (GPS) with
automatic switch-over
Carrier Offset: Up to 5000 Hz (1 Hz steps)
Absolute Delay: 0 to 40ms (5 us steps)


Windows™ management application for local or network configuration and diagnostics.
Remote diagnostics via SNMP.