UHF 13-El FD-Yagi (2RR) webpage contains Spread Sheet Boom Correction Calculation Examples, based on a variety of references sources (note disagreements). Boom Corrections are NOT needed if using a non-metallic boom (e.g. Note that the amount of Boom Correction varies, depending on whether Insulated or Bonded to the Boom and derated (reduced) for being on TOP and if Isolated ABOVE or BELOW the Boom, which explains why there is usually NO BC for Active Elements. To compensate for the missing Boom, 4nec2 optimized dimensions for Element Length must be INCREASED by the amount of the BOOM CORRECTON when cutting actual Metal.
If change to a 'standard' sized element diameter.īOOM CORRECTIONS: Most NEC Yagi models intentionally leave out the Metallic Boom since it requires many more segments that greatly slow down the simulation. Invert ratio to enlarge a design for a lower frequency Band. YagiCAD - A freeware windows antenna design and modelling software developed. YO.exe is still today used to optimize Yagi Antennas. YO Yagi Optimizer by K6STI is an old MSDOS based antenna modelling software that has been very popular among ham radio community. To Rescale a New UHF Band Antenna (if peak on CH51) to center of 2.400-2.485 GHz Wi-Fi Band, shrink ALL Dimensions (incl. Nearly ANY Antenna Design can be Rescaled to dimensions appropriate for another Band (incl.
UHF 5, 6, 7, 8, 12, 13, 15, 16, 18, 23-Element and 91XG (23-Element + Corner Reflector) Yagi Antennas performance analyzed using 4nec2. Yagi Antennas - ImageEvent holl_ands >Yagi Antennas Yagi Antennas Hi-VHF 4, 5, 8, 9, 12, 13, 16, 18, 20 and 22-Element Yagi Antennas performance analyzed using 4nec2.
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