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VHF can offer greater distances than UHF. Ideal for open space applications, it is not affected by woodland etc but it is not suitable for within buildings.
  • Frequency range 138 ... 174 MHz 218... 238 MHz
  • Channel spacing 12.5 / 25 kHz
  • Communication mode Half-duplex
  • Carrier power 100 mW, 500 mW, 1 W, 5 W / 50 ohm
  • Receiver Sensitivity -115 ... -110 dBm (BER < 10 E-3)
  • Adjacent channel selectivity > 50 dB / > 60 dB
  • Interface level RS-232 or RS-422. RS-485 Interface
  • One port for data and one for NMS
  • Interface connector D 15, female
  • Data speed of RS interface 1200 - 38400 bps
  • Data speed of radio interface 19200 bps (25 kHz channel) 9600 bps (12,5 / 20 kHz channel)
  • Data formats Asynchronous data 
  • Operating voltage +8 ... + 30 Vdc
  • Power consumption 1.7 VA typical (receive) 6.6 VA typical (1 W transmit) 22 VA typical (5 W transmit) 0.07 VA typical (when DTR is "0")
  • Temperature range -25°C ... +55°C
  • Antenna connector TNC, 50 ohm, female
  • Construction Aluminium enclosure
  • Size H * W * D 137 * 67 * 29 mm (without a heat sink) 137 * 80 * 56 mm (with a heat sink)
  • Weight 265 g (without a heat sink) 550 g (with a heat sink)

SATELLINE-3AS(d) VHF is a half-duplex, high speed radio modem, with up-to-date hardware features and completely renovated software architecture.

It operates on 138 ... 174 MHz (138 ... 160 and 155 ... 174 MHz variants) or 218 ... 238 MHz frequency band. Channels spacing 12.5 or 25 kHz is available, with over-the-air data rates 9600 bps or 19200 bps, respectively.

The SATEL NMS (Network Management System) software provides the user with a powerful graphical tool for designing a radio network, which ensures that the radio modem receive and transmit only desired messages. Other benefits of the NMS:
- Enhanced reliability, through advance indication of anticipated faults and failures
- Reduced configuration and maintenance costs, through remote configuration
- Flexibility in adapting to customer protocols and applications
 

 
get_acrobat
19 January 2012