2m slot antenna
An Efficient 2 Meter Antenna Disguised as a TV Satellite Dish This vertically polarized horizontal slot antenna, cut into the reflector of a TV dish, might be the ultimate stealth antenna. Figure 1 — Note the low visibility of the slot in my modified satellite TV dish. Dec 21, · Built 2m slot and it worked. Using MFJ antenna analyzer it tuned @ MHz. Going to try to tune it to if I can. Suggestions were to use Alum foil around some legs. RF impedance of ALUM and Copper are different I am told. As it exists it has a lot of gain over the rubber antenna, Radio gets out better even though the SWR is about 2m Slot Antenna from March QST. Indoor Stealth Antennas Indoor antennas may work very poorly if your home has aluminum siding, a metal roof, steel construction, or foil-lined insulation. If you have a big attic (preferably without ducts running all over it) you have many more.
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That is not how a slot antenna works, please look up some designs online. As per previous answer, the design is much more complex. Active 3 months ago. I was able to tuen the 2 meter slot antenna to Read the Antennas' section of this Forum
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.
I like the idea of a Dipole analogue that doesn't look like an antenna Would a Slot antenna cut into a piece of 1. Minimal expense and I can get it almost anywhere. Would that be better than just cutting the slot into the bars? I can't find out if that's very directional, I assume I'd cut it in the top and use weep holes, cheapest option.
So you don't want a whip, as it makes the Smart Car look like a "RC Toy" although some in the hobby, me at least, will disagree, afterall antennas on cars are fantastic. And you cannot use any mag-mount, as the vehicle is largely plastic, which also means you don't have a "ground plane" or whatever name you want to give it. Technically the metal horizontal parts of a vehicle will act as a capacitor to earth when properly bonded.
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Forgot Password? Secure Site Login Forgot Password? Anyone else having problems with the build? The bill of material seems to be short a few pieces Any help out there?
There is some information on the Antennas, feed lines, baluns and antenna tuners part of this forum. I am the author of the Cube-Slot antenna. There are correct tube-cut lengths, as opposed to overall dimensions, now of qst-in-depth. Many have been successful with these. They are the length of the cut tubing pieces in my prototype.
Sorry for the typos and error in the article. There are three ways to tune the antenna: 1 shunt a little L or C across the feedpoint, a short hair pin or cap of circa 10 pf. This is more work but the best. To lower the frequency only, you can add short stubs at the corners across from the feedpoint corner.
A couple inches of the tube flattened and screwed on. If anyone finds another method, pass it alone: jportune aol. John W6NBC. Any chance of getting a center line drawing of all the vertical and horizontal copper pipes. This would be a great help in cutting the pipes to their correct lengths as well as what frequency this antenna was tuned to for min swr. Read the Antennas' section of this Forum I describe how they all go together. Built 2m slot and it worked.
Using MFJ antenna analyzer it tuned Going to try to tune it to Suggestions were to use Alum foil around some legs. As it exists it has a lot of gain over the rubber antenna, Radio gets out better even though the SWR is about 1. I am also suspecting the Antenna Analyzer is off freq. More: Is the antenna scalable? Would like to make one for 70 cm. Would like to make one for mHz for cell modem.
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