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Update: I wanted to get back and write an update on the results, unforeseen complications, and unexpected success. Over the past two years, one of the two built bester antennas has sat atop my house in what has quickly grown to be an antenna array. The two biggest mistakes made were both fallacious assumptions: Assuming a brand-new, expensive amplifier would arrive free of defect from China. Assuming the satellite feed distance was already correctly configured. Both caused considerable delay and wasted many hours of troubleshooting the wrong part. I rightfully should not provide advice I would be unwilling to follow, but regardless, I suggest if you are not strapped for cash, pay the extra money for quality cable connectors. Avoid the crimp connectors if possible, in favor of tension connectors. Furthermore, for larger cables, such as Rg8, use Type N over SMA. SMA simply isn't strong enough to hold up to the forces placed on it with larger cabling. Little can be said about the experience regarding the defective amplifier, besides echoing the golden rule of the importance to test even new equipment after purchase. To bore you with the trivial, parabolic reflectors are highly engineered complex devices with a wide range of variance. Every dimension of the reflector, feed arm, and receiver was engineered to the effect of providing a functioning unit to collect a signal and focus that signal on one specific location. If your configuration of the reflector is haphazard, and therefore incorrect, you will not receive any signal. All of this is said to stress the importance of recognizing exactly what type of reflector you are using, and to ensure you know how to configure it. Just by sheer sight alone, the distance from the receiver to the distance became suspect, as the receiver appeared to be so far from the dish it was not receiving any benefit from the parabolic reflection. Research began, and luckily a parabolic calculating program was discovered. The program had one drawback, it was written to only calculate center feed and vertically ovular offset parabolic reflectors, while ours was an oblong offset reflector. Oblong offset reflectors are wider than they are tall, because usually they use two offset receivers. Thankfully, the Northern Texas Microwave Society published a PowerPoint presentation on how to correctly measure the dimensions of your oblong offset reflector in order to provide the correct measurements to calculate your parabolic reflector dimensions as an ovular offset dish. Which basically involved laying the dish level and filling it up with water, and then measuring the diameter of the pool. Needless to say, this provided us with several concrete answers as to how we were supposed to have our reflector setup. Without an amplifier and working off the sheer brilliance of the bester antenna, we were able to pick up a signal located behind a hill through a heavily wooded area over 321 yds away at around 58dbs. Which is an incredibly surprising and unexpected success. We have two new builds to work on, a small omnidirectional antenna for a ESP32 device and a semi directional paneled antenna. We also would like to further improve on the performance of our cantenna build. I hope that this update provides information someone else might find of use someday.
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Is this type of antenna also REMO brand...???
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,,,model... 917 x 720 welded iron bars (Pacific Grid) 917mmx720mm and 150mm deep f/d = 0.38 grid parabola.cst
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,,,,for 50 Ohm... ,,,,next 75 Ohm ,,,technical details... ,,,to change the impedance the power pin diameter(d0) must be changed...!!! The SMA plug remains the same, 50 Ohm impedance, only the coaxial cable is 75 Ohm.
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What about the invention of desktop antennas?
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FPV batwing antenna 5.8 GHz 12dB 30° WavLink Batwing 5.8 GHz SMA, for quadrocopters and aircraft models-will allow you to transmit a radio signal wirelessly, more stably and over a longer distance. The presented directional antenna operates at a total frequency of 5.8 GHz and is mainly used for quadrocopters and aircraft modeling, in order to increase the signal transmission range. A special feature of the model is the high gain, wide bandwidth, collapsible design, good housing materials and a popular connection connector. The antenna is one of the best FPV antennas in its price range, as it has a good gain factor. The gain of this antenna is 12 dB, which is enough for most tasks. The antenna can be used to stabilize the signal and display the image accordingly. Most often, this antenna is used to transmit a wireless signal in aircraft modeling, and it can be used both on transmitters and on wireless receivers. The antenna has a simple design and a high gain, so the engineers of our store conducted a special test. We conducted the test with a quadrocopter and a 400 MW 5.8 GHz transmitter, as well as FPV goggles. In the first test, omnidirectional clover-type antennas were connected to the devices, while the video signal transmission range was about 150 meters. In the second test, the Batwing antenna attached to the boom was connected to the FPV glasses, while the video signal range was about 5500 meters. https://gadgets-world.com/fpv-antenna-batvynh-5.8-hhts-12db-30-wavlink-batwing-5.8ghz-sma-dlia-kvadrokopterov-y-avyamodelei/
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,,,this must be it...!!!
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This one in picture
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,,,let it be a sketch....
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",,,such a yagi antenna can also be attached to the focus of a parabola.... The 8x8 boom is made of insulating material....
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,,,for which antenna...??
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@admin Do you have cst or stl file of the cilindrical metal collinear antenna ? Many thanks!
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hello. It's my work.
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It looks like a copy of the Belgrano antenna, it has the same measurements. PLANOS ORIGINALES BELGRANO POR CHALENGER.pdf
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,,,no...
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About this construction, can it be modified for dual port? And if yes where should they be attached?
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This is a good design but a bit difficult to make the wires be stable under patch. https://www.researchgate.net/figure/Measured-and-simulated-S-parameters-of-the-fabricated-antenna-element_fig3_330818544
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Lunokhod-1 and its antennas! Is the antenna a cannon or a ribbed rod? In fact, this is an antenna complex! Ribbed-rod guiding director system with an active element in the form of a spiral axial radiation antenna! Do you want a good 4G LTE MIMO antenna "like Lunokhod-1" for your dacha?
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My thought is to make it from 4 copper sheets 0.5mm or aluminium 1.5mm, 4 copper tubes 6mm or aluminium 10mm, and copper 0.5mm or aluminium 1.5mm reflector, then for copper I'll solder them all, and if aluminium thinking of using steel or aluminium screws to mount elements. But I don't know to use CST or HFSS software to simulate and correct dimensions, distances and more.
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Thanks, I've seen this construction, looking for a way to reduce frequency to 3300-3800MHz. Ca it be modified? I want to attach it on a 60cm parabolic disk.
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The Best Wideband Magnetoelectric Dipole Antennas With Dual Polarization and Circular Polarization... 07091876.pdf
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Petra 9-simulation and dimensions...
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Have a look DeepSeek.pdf
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This was the last deleted post. I have finished adding content. It was my last contrubution. EOT
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