VHF Paging Transmitter With Built-in Encoder

This high-performance 250 Watt paging transmitter has a built-in POCSAG encoder, suitable for single site or non-simulcast paging systems in hospitals, public safety or other mission-critical applications. 

The transmitter has a large installation base and offers industry-leading MTBF figures and a wide range of diagnostics and configuration options.



  • Accepts TNPP / TAP / iXO / PET paging protocol inputs
  • Inputs over Ethernet or Serial
  • Custom implementation of other proprietary protocols if required
  • High power output (selectable from 20 W - 250 W)
  • SNMP diagnostics and alarms
  • Full VHF Band coverage
  • DSP precision modulation
  • Integrated isolator
  • Sniffer port for in-rack receiver
  • Remote firmware upgrade capability
  • 110-250 VAC, 24 VDC and -48 VDC versions available
  • Software selectable frequency offset
  • Adjustable absolute delay correction
  • Front panel indicators for power output and diagnostics
  • Hardware alarm outputs
  • High frequency stability and external reference 


With a built-in POCSAG encoder, the paging transmitter is particularly suitable for non-simulcast networks in hospitals, public safety or other mission-critical applications.

The transmitter has a large installation base and offers industry-leading MTBF figures and a wide range of diagnostics and configuration options.

The transmitter can also be seamlessly installed in place of other transmitter brands in an existing paging network.


Built-in Encoder    Accepts TNPP / TAP / iXO / PET protocols directly into the transmitter without the need for an external encoder.
Multiple Paging Protocols   The transmitter can be used with all industry standard POCSAG and FLEX paging formats (FLEX available on request).
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.




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: 138 MHz to 174 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)
Compliance: AS/NZS 4769.1 2000, AS- 4295:1995
CFR 47 Part 15 and Part 90:
ETSI EN 300 113; ETSI EN 301 489; EN
60950; RoHS (scheduled)


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



Internal Encoding: TAP, PET, TNPP over serial or TCP/IP
External Encoding: Asynchronous POCSAG, Synchronous FLEX (FLEX on request)
POCSAG: 512 / 1200 / 2400 (2-FSK)
FLEX: 1600 / 3200 / 6400 (2/4-FSK) (on request)

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

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