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Admin
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Everything posted by Admin
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For now, I think it will stay the way it is...!!!
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Marcello, it doesn't make sense to work in two positions..."Wifi extender antenna for long distance (10 km)"+"4G Repetear/Amplifier"...!!! I'm going to delete one of them, so decide which one to stick with...!!!
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,,, could be a solution but better wait until I do the simulation for the desired frequency...!!!
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,,, but what frequency do you want to work on ...?
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I think this solution would be good...https://yandex.ru/video/preview/?text=Wifi extender antenna for long distance (10 km)&path=wizard&parent-reqid=1640579748980487-3609367412323145088-man1-6175-man-l7-balancer-8080-BAL-633&wiz_type=vital&filmId=9712634466127784192 ,,,or something like this...
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,,, to put in the focus of a parabolic offset...
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It looks like this antenna is pretty good...
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Antenna 20-Series NOBICOM high – tech product, designed to work in the toughest conditions. The antenna works most effectively in buildings of low and medium density, which reduced the effect of multiple reflections of the signal. In such conditions, the MIMO technology does not give the desired effect, and the cost of the two polar antenna is not justified. The package includes a fixing rotary device for mounting on bracket or mast. operating frequency range, MHz - 1900-2700 Gain, dBi 17-20 days Width in H-plane, degrees - 13-15 days Width in E-plane, deg - 13-15 sidelobe not more than-12dB Isolation between ports, not less than - 35dB Input impedance, Ohm 50 VSWR in operating frequency range, no more - 1,5 Permissible power W - 50 Polarization vertical/horizontal Weight, the kg - 3.2 Mount - mast/bracket diameter 20-52mm dimensions, cm - 45х45х6 Allowable wind speed, km/h - 20 Connectors antenna SMA-female x 2 Connectors adapters (included) - N-male - CRC9 or N-male - TS9 Material protective cover - ABS plastic with UV protection antenna Material - galvanized steel fastener Material - steel screen Material - steel Protective coating - polymer powder paint Length of USB cable, m - 10
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Vova, do you have any dimensions to this ... ???
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I think that's the best... ,,,and here is the file.cst
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,,,the distance between the vibrator and the reflector as well as the other dimensions must be reviewed...!!!
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,,, a simulation with the above dimensions (given by me)...
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,,,if Guanella adaptation is correct, it can be even better...
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Gregorian Antenna – symmetrical reflector...
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Coaxial cables with an impedance of 50 ohms (Ω) are used to connect the transceiver to the antenna. The most common cables are RG 58 and RG 213:The RG 58 cable is used for use, which has a diameter of 5 mm and the losses it introduces are insignificant, due to the small length of the cable. One detail that you MUST keep in mind is that a cable must be equal in length to multiples of ½λ to properly transfer the impedance of the antenna. If the length is different then the cable will work as an impedance transformer. In this case, a properly tuned antenna will have a high SWR at the transceiver output. The shortening factor (k) has a special importance in the calculation of the cable length. It differs depending on the dielectric of the cable. -shortening factor(k) -Solid Polyethylene (PE): 66 %
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,,, it depends on what kind (type) of cable it is ... in any case it is not a 75 ohm impedance cable ... !!!
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,,, Shabra,how to get a commercial Kathrein vibrator...???
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Do you understand what I mean?
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,,,Shabra,try to put the plate in the focus of the parabole grid...!!!
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,, the secondary reflector from the grid antenna is for either vertical or horizontally polarization ... you need a secondary reflector with circular polarization...!!!
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,,, another configuration ...
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Or the same ATVKD-15/21-39 (TV antenna “wave channel”, decimeter range, 15-element, channels 21-39):
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Clanon, somewhere on this site there are also dimensions...!!!
