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Passive antenna systems

Advantages:

Disadvantages:

  • Supports Analogue and Digital VHF / UHF radios

  • Antennas max 50m apart (UHF) 100m (VHF)

  • Low-cost hardware

  • Can only link 2 or 3 blackspot areas together

  • Relays all simplex channels

  • Antennas and cables need installing

  • Can be installed in intrinsically safe areas

UHF Repeaters

Advantages:

Disadvantages:

  • Supports Analogue and Digital VHF / UHF radios

  • Requires antenna / leaky feeder installation (moderate / high complexity / cost)

  • No distance limitation on location of repeater(s)

  • Provides a single channel per Repeater (Analogue) or two channels (DMR slot 1 & 2)

  • IP roaming supported by some repeaters

  • IP roaming requires more channels

  • Intrinsically safe and non-IS versions available

 

 

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