WebAug 20, 2024 · This particular ground plane is constructed out of an SO-239 chassis connector, so the radiator is attached to the center conductor of the connector and the radials each come off the … WebThe dipole and the half wave antenna do have the same gain (within .34 dB in this example). The second reason you may want to use the half wave vertical is to obtain a lower angle of radiation. A ground plane mounted at 1 foot above ground has a radiation peak at 25 degrees, the half wave antenna radiation peak angle drops down to 20 …
Effect of carbon-fiber composites as ground plane …
Webattach a ground plane and check the VSWR at two well-separated frequencies. The results will show whether the stub is too long or too short. It should be possi- ble to get the VSWR below 1.5: I across the repeater portion at the upper end of the 2-meter band. Shortening the stub to move the maximum VSWR point higher in frequency is easy. WebAug 16, 2012 · Take the 1 1/2” adapters and glue them to your PVC pipe; one on the top and one on the bottom (the bottom adapter can be used to mount the antenna to a … eighth\\u0027s qh
1/4 Wave Ground Plane Antenna Calculator - M0UKD
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 … WebSep 12, 2024 · So to fix this, we add a suitable valued inductive loading coil to the base of the 5/8 element. This loading coil will load the antenna and make it electrically longer, approximating that of a 6/8, or 3/4-wavelength … WebJan 24, 2024 · 3. No, it is not needed, but it can improve the antenna system. An EFHW is simply a half-wave length of wire and a matching device, and that's it. Counterpoises are … eighth\\u0027s qk