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devton
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Everything posted by devton
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i saw dual-barrel gun today...can yagi work like that? LIKE 2 stacked yagi, but 1 vibrator,1reflector BUT 2 sets of directors? placed side-by-side at 1\4wavelength vibrator should be 2-4 mm closer to first directorS (not like in single yagi) but reflector-vibrator should stay same (29mm)
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>>2. Any suggestions for creating a robust hotspot with a 1km radius at the remote location? Use collinear TRUE 11....8dbi antenna for 2.4GHz in the center of area Like on picture attached to this post And then cover area stripe by stripe using sector antennas 5GHz Forget about entire 6 GHz band
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3d-corner easy to build this antenna maybe hard to cut circles, maybe not... the Easyest way for you is to try to use your quados
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Well, you can use your quados8 if you place it parallel to the ground and point exactly on base station 3x2 antenna from Admin...looks like it vertical polarization if placed as on picture it should have beam, cone radiation pattern not too wide 25 degree or something like that
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and remember radiation pattern in this orientation - thin beam so u need to poin EXACTLY to base station, know exactly where it is, because:
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to connect to base station u need antenna with vertical polarization so u should place it like that:
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maybe it worked? did u checked your quados8 with SWR-meter? this antenna got horizontal polarization when placed vertical so it could not work with base station because of polarization missmatch -20...30db and if u rotate it 90degree, make parallel to the ground, it got ultra-thin radiation pattern so it is VERY hard to point it to basestation
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hm...they got two 3.5dbi antennas X-pol... 3.5 x 3.5 = 12 (dbi) THIS is how this chinese antennas arithmetic woks
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extender fo not so long distances
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show us fotos or your fm reciever, please i think in your case there is some port\antenna missmatch and it is the only trouble on your way to ultra-long range FM-sessions
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)) i think u do not need just "better things" i found this "Sven says this horizontal antenna receives stations 250–300 km away in northern Germany almost like locals" and if u got some troubles receiving stantions from 250km, it is most likely because it is 75 OHM antenna and your reciever input is most likely 36 o 50 ohms
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addind 1-2 directors and re-emulating this FM5 looks like good idea
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So THE best option 4 u is: Small FM5 Yagi because it is less than 3m, THE simplest construction, good F\B and tested for you requested distance: "Sven says this horizontal antenna receives stations 250–300 km away in northern Germany almost like locals" http://www.ham-radio.com/k6sti/five.htm it is so easy to produce. U can make your own and test it in couple hours
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THE best FM-antenna is: FM5 YAGi https://3g-aerial.biz/fm5-small-antenna
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only practice will show...but i still think: cable length from #3 on video and conection scheme from #1 is the best option
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he is using 3 Different cable length in this antennas so IF you try to use cable length from #3 type (best SWR on video) AND use this cable length with connection option #1 it will be the best
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1st but the difference will be small and not the fact that it is particularly measurable
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the right name for "698-3800 Mhz Yagi" is "Log-periodic antenna" =)
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wow! someone in russia makes it for 5.8!
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no he used big 2.4ghz version in video
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dude used your Batwing to get 5.8 GHz...can you show simulation for your Btwing on 5.2-6GHz?
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hm...what if you try to model Batwing with 90 degree 2d-corner reflector?? 0_o corner reflector antenna with Batwing instead of dipole! 0.36...0.4 wavelength from corner top to axis of batwing batwing plane in plane of corner's bisector
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i know swr on video is just beautiful
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This is your batwing made in russia! Wow! p.s he just a little bit mess with reflector angle
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