Relative directivity factor

Relative directivity factor (RDF) is a figure of merit for radio receiving antennas. It is the antenna gain in the forward direction divided by the gain in all other directions. It is also called the signal to noise improvement factor (SNIF).

References

  1. ↑ Lee Strahan. "Low Band Receiving Antenna Comparisons". Retrieved 16 February 2018.
    - Rudy Severns (2016-12-20). "Comments on the WD8DSB Terminated Bow-Tie RX Antenna". Retrieved 16 February 2018.
  2. ↑ Lee Strahan. "Receiving Antenna Comparison Chart". Culver, OR: Hi-Z Antennas. Retrieved 16 February 2018.