Ronja Twibright Labs

Tetrapolis/Inferno NED measurement

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Measuring or estimating Noise Equivalent Distance (NED) of Ronja Tetrapolis or Inferno.


General requirements

  • 1 PC with network card
  • A mirror
  • Networking operating system

Measurement conditions

Ensure there is only a dim lighting in the room. Otherwise, the measured value may be reduced.


If you have these requirements:
  • Full duplex network card
  • Linux where C programs can be installed
, then perform the Bertest variant.

Otherwise, perform the ping variant, which is much less exact.


NED should be around:
Model/configurationNED [m]
Tetra-/Metropolis SFH2035
Tetra-/Metropolis BPW434
Tetra-/Metropolis PW43, BF982, UA733-TO5-10 and BC547 in receiver2

Note that NED will be reduced if the transmitter duty cycle is not properly adjusted.

An expected information missing here?