November 11, 2022
Description
This Fox hunting antenna is constructed using 3d printed element holders (PETG, 20% fill) and easy to acquire material from a hardware store. It is a remix of thingiverse 912567 but optimized for a small, hand held UHF HT rig carried for fox hunt radiolocation. The antenna has a 23 dB front to back ratio and is tuned to the 3rd harmonic of the 2 meter band. This makes an ideal small sized directional antenna that doesn't require attenuation of any kind. A youtube video is available that contains a demo, detailed instructions for construction and performance theory obtained by antenna modeling software:
The following code can be loaded into the MMANA-GAL_basic antenna definition edit icon if you wish to play with the antenna design (looks like sheet of text above F in Far Field Plots, or Edit menu, Antenna Definition Edit):
*442.29***Wires***30.0, 0.161, 0.0, 0.0, -0.161, 0.0, 0.00205, -1-0.176, 0.171, 0.0, -0.176, -0.171, 0.0, 0.00205, -10.098, 0.14525, 0.0, 0.098, -0.14525, 0.0, 0.00205, -1***Source***1, 0w1c, 0.0, 1.0***Load***0, 1***Segmentation***800, 80, 2.0, 2***G/H/M/R/AzEl/X***2, 1.5, 1, 50.0, 120, 60, 0.0
73, Sandy KB3EOF
License:
Creative Commons — Public Domain