Make a 1/4 Wavelength Antenna + Calculations - YouTube
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1/4 Wave Ground Plane Antenna Calculator – M0UKD – Amateur Radio Blog
1/4 Wave Ground Plane Antenna Calculator – M0UKD – Amateur Radio Blog
2M 1/4 Wave Ground Plane Antenna – KM4NMP
توییتر \ Ham Radio Prep در توییتر: «It's easy to #build your own ground- plane #antenna for 2 meters, 1.25 meters or 70 centimeters. With four lengths of wire radiating out of a