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4 results for «dBm»

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  1. Learning

    dB, dBm and power

    dBm has a fixed reference

  2. Learning

    Antenna gain, dBi and EIRP

    In logarithmic form: EIRP in dBm = transmit power in dBm − feed-line loss in dB + antenna gain in dBi.

  3. Learning

    Building a radio link budget

    Start with transmit power in dBm.

  4. Learning

    Noise, bandwidth and sensitivity

    At 290 K, a 1 Hz bandwidth gives about −174 dBm: a density reference, not a universal receiver sensitivity.