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Ascom 980 series Paging Receiver units

Ascom 980 series Paging Receiver units

Ascom 980 series Paging Receiver units

The Ascom 980 series of paging receiver is a central part of the Ascom on-site paging 900 and personal security system.  It is available in either UHF (U980)  or VHF (V980) frequency ranges.  The receivers are housed in die-cast aluminium cases combining excellent shielding and cooling properties with high mechanical strength.

Description

Ascom 980 series receiver technical specification

Features
  • Receives alarm transmissions
  • Receives speech transmissions
  • Automatically selects receiver with best signal
  • Rugged case mechanically and electrically
Radio
  • Frequency range:
    • U980: 420-475 MHz
    • V980: 140-175 MHz
  • Demodulation: FM 12,5 kHz 20/25 kHz
  • Deviation: 1,5 kHz 3,0 kHz
  • Co-channel rejection, better than: -12 dB -8 dB
  • Adjacent channel selectivity, better than: 70 dB 80 dB
  • Spurious response rejection, better than: 80 dB 80 dB
  • Blocking or desensitisation, better than: 90 dB 90 dB
    • U980 Sensitivity at 20 dB SINAD: < 1,8 µV rms < 0,9 µV rms
    • V980 Sensitivity at 20 dB SINAD: < 1,4 µV rms < 0,7 µV rms
Physical
  • Dimension: 274 x 190 x 60 mm
  • Weight: 1,9 kg
  • Case: Die-cast aluminium, black
  • Temperature range: -20 to +55°C
  • Power supply: 12,5 Vdc ±10%
  • Current consumption: U980: 0,5 A max. V980: 0,3 A max.
  • External connections: Screw terminals and strip connectors
  • Antenna connection: Coaxial connector SO239
  • Receiver output: Balanced
  • output level:
    • U980: 5,0 Vp-p including quality tone
    • V980: 6,0 Vp-p including quality tone
    • frequency range: 20-8000 Hz

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