Webwith the half wave antenna, more of the RF energy is radiated toward the horizon. Also, an effective ¼ wave vertical needs a lot of ra-dials to make it efficient. Most hams, including Ole Joe, will attest that the vertically polarized two meter J-Pole an-tenna is one of the best antennas around. Did you know that this antenna just happens to WebApr 5, 2024 · A 1/2 wave length antenna has -0- gain and -0- losses (its the "standard" all antennas are compared too). A 5/8 wave antenna has a very slight gain, much less …
The ¼ Wave Droopy Ground Plane 2 Meter Ham Radio Antenna
WebThe coax feeder's shield is connected only to the antenna's ground-plane. ... 3 1/2 turns about 1" diameter, then inserted the end of the coil into a mag mount formerly used as the base of a 1/4 wave 2M antenna. The coil & the whip are one piece. I have an MFJ Antenna Analyzer 259B which basically made my extremely crude efforts pay off. WebThis morning I've been experimenting with a quarter-wave ground plane antenna for 464.875 MHz for use with an HT radio. I'm using 10 ft LMR195 cable, which says on the datasheet the velocity factor is 75%. Ive been … python sankey图
I assume this needs a ground plane. Was going to use on mast
http://eomal.freeservers.com/noel.html http://www.fucimin.altervista.org/en/groundplane.html WebWe are going to build a 1/4 wave elevated ground plane antenna for non-mobile use. The formula to figure the starting length of a 1/4 wave antenna is 246 / frequency in megahertz. So for 50.200 MHz and SSB operation … python sap automation