requires two sets of parasitic elements instead of one for the true slot; skeleton slot feedpoint is high impedance and requires matching while the true slot feed is low impedance. Both antennas exhibit wide bandwidth and a single feedpoint. The other advantage that the skeleton slot driven element brings to a stacked yagi Slot antenna parabolic dish based 2m 440 - YouTube a 40 inch slot cut in a parabolic dish, fed with a so239 jumper about 4.5 inches from the end of a slot, yields a stealthy antenna which can be used for 2m and 70cm. Vertically polarized and ... THE (VHF) DIPOLE ANTENNA - G-Portál THE (VHF) DIPOLE ANTENNA At VHF and UHF, most antenna systems are derived from the dipole or its complement, the slot antenna. Many antennas are based on half-wave dipoles fabricated from wire or tubing. The feed point is usually placed at the centre of the dipole, for although this is not absolutely necessary, it can help prevent Slot antenna for 2 meter mobile - Stack Exchange My primary vehicle is a Smart car, with a roof that's a piece of plastic(100% moon roof). Not the most awesome of cars to use for grounds. I'm building a bumper mounted antenna tower, EMT with some square tube. Earlier today I stumbled across an article on 2 meter slot antennas cut in to satellite dishes.
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YU0B beam model response to variation of the segmentation density Modelling the YU0B for correct results may be named a though business. If not complexity of the skeleton slot alone with its multitude of rectangular angles is a challenge, the very close coupling to the adjacent pair of D1's for sure adds some spice to that.
The Double Loop or SDR This antenna has been known since the 1950s and is composed of two equal-sized rectangles. It was first called the “skeleton slot” [i]. Later, when described as a vertically polarized antenna for 80 meters, it was named the DMS or “double magnetic slot” [ii]. A 30-meter incarnation was called the “H-Double Bay ... DG7YBN - 144 MHz YU0B Beam