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By the way, the reception of both " circular "polarization and" linear " can be conducted on ONE converter..... How....???? I'll tell you about it ..... in the meantime, take a close look at the "inside" of the circular converter. You can see the DIELECTRIC PLATE there, at a 45 degree angle...???? That's the key...,,,,, that is, capable of receiving both linearly polarized signals and circularly polarized signals.....

Antenna-Bank (bandanna, banctenn, eng. cantenna) — name directional antennas-waveguide, made at home from tin cans. Typically used to extend the range of wireless devices. This cantenna, presents some changes as it would be 1) plate vibrator 2) adding a directing element 3) attaching a cone to the cylinder You can also use the simple vibrator....

,,,something like that...)))

The KP15-750/2900 broadband (multi-band) directional panel antenna with a gain of 15 dBi is recommended for use with 3G/4G/YOTA modems, Wi-Fi routers, GSM 900/GSM 1800/3G/4G cellular communication amplifiers (repeaters), and other equipment operating in the 750-2900 MHz frequency range (radio communication systems, GSM alarms, etc.). The antenna is designed to work in wireless communication networks with equipment of the following standards: 2G (EDGE, GPRS on GSM 900 and GSM 1800 frequencies); 3G (UMTS 900, UMTS 2100); 4G (LTE 800, LTE 1800, LTE 2100, LTE 2300, LTE 2600), YOTA; WI-FI 2400 (IEEE 802.11b, g, n). Dimensions, weight, and quantity of the product in the package: Dimensions of individual packaging (length, width, height), mm 250 x 250 x 100 Weight in individual packaging, grams 1400 Antennas-characteristics : Operating frequency range, MHz 790-960 ,1700-2700 Antenna gain, dBi 8-15 VSWR in the operating frequency range, no more than 1.6 Polarisation Vertical Wave resistance, Ohms 50 (N connector) -75 (F connector) Maximum input power, W 10 Connector N- female F- female Allowable wind load, m/s 30 Operating temperature range, oC -40 ... +90 Maximum permissible air humidity, % 100 Communication Standard -Multi-band

Professional panel antenna for modems and routers that support MIMO 4x4 technology. F=1700-4200MHz, CU=9dBi, 4 x N-female connectors, vertical+horizontal polarization, decoupling between channels of more than 25dB. Electrical characteristics of the PETRA-9 MIMO 4x4 antenna Operating frequency range, MHz 1700÷2700 Gain factor, dBi 8,5÷10 Bottom width in the H-plane, deg 59÷82 Bottom width in the E-plane, deg 35÷57 Side lobe level, max -7 dB Decoupling between ports in the operating range, not less than 25 dB Input impedance, Ohms 50 SWR in the operating frequency range at the inputs, max. 1,6 Permissible power, W 10 Slope of polarization of received / emitted waves -45°/+45°(X-pol) Mechanical characteristics Antenna weight, g 820 Bracing mast diameter 20-52mm Operating temperature range -60°C to +80°C Overall dimensions without mounting, m 0, 24x0, 24x0, 1 Permissible wind speed, m / sec 25 Connectors 4 x N-fe male Material of the protective cover Polycarbonate Antenna Material Galvanized steel, brass Mounting material steel / Polycarbonate+ABS

I don't understand anything anymore, I'm in a different location and I can't see some previous posts and some pictures ...like this....

This adaptation doesn't work very well...

The KP20-5500 antenna is used in 4900-6100 MHz transceiver systems. The antenna is designed for use in wireless computer networks of Wi-Fi standards IEEE 802.11 a/h/n, as well as in alarm systems, radio communication, etc. Dimensions (length, width, height), mm 200 x 200 x 120 Dimensions, weight, and quantity of the product in the package: Dimensions of individual packaging (length, width, height), mm 215 x 215 x 90 Weight in individual packaging, grams 1050 Number of products in a group package, pcs 12 Antennas-characteristics : Operating frequency range, MHz 4900-6100 Antenna gain, dBi 20 VSWR in the operating frequency range, not more than 1.6 Polarisation Linear Wave resistance, Ohms 50 Maximum input power, W 50 Connector N- female SMA-female Allowable wind load, m/s 30 Operating temperature range, oC -50 … +90 Maximum permissible air humidity, % 100 Communication Standard WiFi 5GHz Mounting type on the pipe Execution type Panel version MIMO Support No ,,,and I still tried to simulate this antenna....!!!!

Clanon, can you show me this details...

This page details the construction of a biquad antenna. The biquad antenna is easy to build, and provides a reliable 11dBi gain, with a fairly wide beamwidth. an antenna geometry of ideal biquad...

Bottom of a circular metal box can build a simple antenna with an elliptical radiator...

Is a Russian patch-antenna for its positioning in the focus of a parabola offset... Antenna is broadband (2.3-2.7GHz) Bester Antenna on the offset dish It has a elliptical polarization antenna.

"I don't think I have this file anymore...!!! Maybe only if I bring this topic up again.

It was interesting to design a small and lightweight antenna from available materials for FPV. After looking at what is available in household stores, I decided to stop at zinc/brass for the antenna elements and a canister cover as a radom. And so everything is in order - as it seemed to me, a lid from paint cans / mounting foam / air fresheners is perfect for radom. Its diameter is 77 mm external and 84 mm internal. Height from 12 to 40 mm. Material-polypropylene. Based on this, the dimensions of the entire structure were selected. you will need brass / galvanized 0.25 mm thick, brass tube diameter 4 mm external (wall thickness 0.25 mm), screw m3 -40 mm. cap nut m3, SMA connector, pipe cutter, metal scissors, drills with a diameter of 1.4 and 3 mm. The reflector is made of sardine cans. General view of the structure and results:

TP-Link CPE510/520 is a 5 GHz outdoor access point similar to Ubiquiti NanoStations. There is also a 2.4 GHz Version of this AP, the TP-Link CPE210/220. The device has a built-in 13 dBi 2x2 dual-polarized directional MIMO antenna with a beamwidth of 45° (H-Plane) and 30° (E-Plane). Installation 1,Connect the TP-Link CPE510 with your computer via ethernet 2,Set the IP address of your computer to 192.168.0.10 with a subnetmask of 255.255.255.0 3,Open your browser, go to https://192.168.0.254 and accept the invalid certificate 4,Log in with user "admin" and password "admin", change the password in the next step 5,Go to the "System" tab and upload the OpenWrt firmware in the "Firmware Update" section and select "Restore" in the dialog promted the filename is limited to a length of 68 characters (as of: "1.3.0 Build 20150612 Rel. 50997", the real limit seems to be 80 characters - including the implicite prefix "C:\fakepath\") 6,Follow official OpenWrt setup instructions (e.g. IP address of the device is now 192.168.1.1)

I tried to do a simulation for this simple antenna,,,,

Usually a Loop antenna exhibits a higher gain than a Yagi antenna with the same number of elements

Interesting, very interesting program to check network security in linux and windows:http://sniff.su/download.htmlhttp://intercepter-ng.blogspot.ru/20...1_archive.html

4G antenna BDM-2 is a wave channel with crack initiation, and the delay line is made of sequentially installed disk elements. Compared to the classical antenna BDM , new directional antenna BDM-2 is: More gain; Improved radiation pattern; More stable operating parameters; Greater reliability; Superior mechanical characteristics. Due to the small weight, a small sail and streamlined shapes, the antenna BDM-2 can be used in almost any climatic conditions. And corrosion-resistant materials of the antenna will ensure a long maintenance-free operation even in the marine climate. Specifications 4G/LTE antenna BDM-2: Antenna type Directed Beam width H/V ° 20/20 Frequency range, MHz 2600 MHz Polarization Linear orthogonal Gain, dBi 15-17 DBi depending on frequency of execution The CWS in RAB. the frequency range, not more 1.5 Max. input power,W 50 The weight of the antenna package, gr. 910 Input impedance, Ohm 50 Overall dimensions, mm Ф90 x 500 The operating temperature range, °C -40 .. +60 Performance All-weather, all - Connector (on the case) N-female x2

5.8 GHz 17dB High Gain AAT Automatic Antenna Tracker for HD FPV RC Racing Drone Product Description: Model: 5.8 GHz 17dB AAT Automatic Antenna Tracker Frequency Range: 5150-5950mhz Input impedance: 50Ω VSWR at surface level: <1.5 Antenna Gain: 17dBi HPBW (3dB): 16 ° H-plane 38 ° E-plane F/B:> 20 (dB) Max Power: 50W Polarization: Vertical polarization Connector Type: RP-SMA Static protection: DC ground Antenna Length (AAT): 30 cm Size: 136*68*10 mm Weight: 57g (Manual)/47g (AAT) Package included 1x5. 8 GHz 17 dB high gain

TL-WN821N is a portable Wi-Fi adapter that can connect via USB to computers and laptops to connect through it with your home router (access point) and safely surf the Internet with speeds up to 300 Mbps. In that situations will it be useful to make a modification,,,

Name and model: Alfa Network 1000mW AWUS036H Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Remarks: The adapter No. 1 for audits, especially reinjecting in monitor mode in windows technology B / G is becoming obsolete, somewhat unstable in navigation. Possibility of using high power application alfatools accepts promiscuous mode. WIRELESS SECURITY RECOMMENDED for use in monitor mode. Name and model: Alfa Network AWUS036NH Chipset: Ralink RT3070 monitor and reinjection mode: Yes, Data and specifications Notes: After the previous model, it is the second best choice for monitor mode. Has many supporters as detractors, saturated environments was somewhat unstable in navigation, supports standard N Name and model: Alfa Network AWUS036NHA Chipset: Atheros AR9271 monitor and reinjection mode: Yes, Data and specifications Remarks: Connector for exchange or connect more gain antennas, standard IEEE 802.11b / g / n with a transmission capacity of 150 Mbps data Somewhat less powerful than the two previous models to monitor alpha mode, but more sensitive and stable her sisters to navegar.En new models have replaced the atheros chipset AR9271L. Name and model: WNDB-ANT Connection Dual Band Chipset: Ralink RT2870 / RT3070 monitor and reinjection mode: Yes, Data and specifications Comments: Very good adapter and monitor navigation mode, the option to use 5 Ghz makes it much more versatile than any other adapter, external antenna connector for 2.4 GHz and integrated antenna for use in 5Ghz. Name and model: Signal King N 360000 Chipset: Ralink RT3070 monitor and reinjection mode: Yes, Data and specifications Observations: RPSMA connector to exchange antennas different model and gain Name and model: Startech USB300WN2X2D Chipset: Ralink RT3572l monitor and reinjection mode: Yes, Data and specifications Comments: Very good adapter 2 connectors antena.Doble 300 mbps.Mimo2T2R band. Name and model: TP-LINK TL-WN722N Chipset: Atheros AR9271 monitor and reinjection mode: Yes, Data and specifications Observations: RPSMA connector to exchange more gain antennas of the best adaptadadores for its relacción quality / cheaper price.The with excellent results, only 100 mw will limit their power in monitor mode. To overcome the above mentioned is advisable to use with antennas direccionales.Tambien is recommended for use with an amplifier. Name and model: ASUS USB-N14 Wireless N-300 Chipset: Ralink RT5372 monitor and reinjection mode: Yes, Data and specifications Comments: Very good adapter at an unbeatable price, dual-band. Name and model: WNDB-ANT Connection Dual Band Chipset: Ralink RT3572 And reinjection monitor mode: If, Data and specifications Notes: The option to use 5 Ghz makes it versatile. 2 external connector 5 dBi antennas to use in both frequencies, the power adapter is minimal. Name and model: Alfa AWUS036NEH Chipset: Ralink 3070 monitor and reinjection mode: Yes, Data and specifications Observations: threaded external antenna rp-sma Name and model: Connection WANT 15-3W Chipset: Ralink RT2870 / RT3070 monitor and reinjection mode: Yes, Data and specifications Remarks: Good adapter monitor mode, does not give the power of 3 watts advertised, high-gain omnidirectional antenna. Name and model: Connection WANT9-2W Chipset: Ralink RT2870 / RT3070 monitor and reinjection mode: Yes, Data and specifications Observations: Connector to exchange more gain antennas incorporates omnidirectional antenna 9 dBi .No gives 2 watts of power advertised. Good performance in monitor mode. Name and model: Wifiscan WS2024e Chipset: Ralink RT3070 monitor and reinjection mode: Yes, Data and specifications Observations: AIO adapter + directional antenna 14 dBi gain Name and model: Wifiscan 2000mw / 6dbi Chipset: Ralink RT3070 monitor and reinjection mode: Yes, Data and specifications Observations: Aerial 6 dBi antennas RPSMA connector to exchange more profit. Name and model: TP-LINK TL-WN727N Chipset: Ralink RT2870 / RT3070 monitor and reinjection mode: Yes, Data and specifications Remarks: internal antenna. Name and model: Alfa Network 500mW Wireless USB Adapter AWUS050NH Chipset: Ralink RT2770 monitor and reinjection mode: Yes, Data and specifications Remarks: external antenna connector. Name and model: Alfa Network AWUS036NHR Chipset: Realtek RTL8188RU And reinjection monitor mode: If, Data and specifications Notes: RPSMA connector to exchange antennas. Audita well only medium distances. Not recommended for use in monitor mode. There is a version v2 Name and model: Érize ERZW54-USB04RS300 Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Remarks: external antenna connector, it supports promiscuous mode, possibility of using high power application alfatools Name and model: Érize ERZW54-USB03H1W Chipset: Ralink 2571 w monitor and reinjection mode: Yes, Data and specifications Remarks: external antenna connector. Name and model: kasens 2000 mw Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Remarks: external antenna connector, posiblilidad alfatools application using the high power driver supports promiscuous mode. Model name: Edimax EW-7711USn Chipset: Ralink RT2870 / RT3070 monitor and reinjection mode: Yes, Data and specifications Remarks: external antenna connector to exchange more gain antennas. Name and model: TP-LINK tl-wn422gc Chipset: Atheros AR9271 monitor and reinjection mode: Yes, Data and specifications Observations: connector for exchanging different antennas profits. Good choice quality, price Name and model: TP-Link TP-WN321G v4.1 Chipset: Ralink RT2870 monitor and reinjection mode: Yes, Data and specifications Observations: a little deaf. 100mW. without antenna, MOD. Name and model: TP-Link TL-WN422G USB 802.11g 100mW Chipset: Zydas zd1211rw monitor and reinjection mode: Yes, Data and specifications Remarks: supports promiscuous mode. There is another similar model but without external antenna, the TP-LINK TL-WN322G .Del TP-Link TL-WN422G-there are two versions v1 has the zydas zd1211rw chipset and Atheros AR9271 v2 Name and model TP-Link TL-WN321G Ralink RT73 chipset monitor and reinjection mode If, Data and specifications Remarks: internal antenna Name and model: Érize ERZW54-USB04RS1W Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Notes: works perfectly in both managed and monitor mode. I do not know if the application alfatools sevira also for erice 1w, accepts promiscuous mode. Name and model: Érize ERZW54-USB04RS800 (800 mw) Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Observations: I think that is the twin brother of gold 800mw externally, sensitivity is higher in the gold 800mw, supports promiscuous mode. Name and model: WIFLY-CITY 1500MW 20G Chipset: Realtek 8187 L monitor and reinjection mode: Data and specifications Observations: economic Adapter (14 €) connector sma, configurable antenna with alfatools, configurable with the driver and utility of Alfa 1w, internal heat sink. Name and model: WIFISKY 1000 mw Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Remarks: external antenna connector, high sensitivity, supports promiscuous mode, possibility of using high alfatools chipset power application Name and model: HIGH POWER 500mw USB LAN CARD Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Remarks: external antenna connector, it supports promiscuous mode, ability to use the application alfatools high power driver Name and model: freewifilink FL2016G 1000 mw Chipset: Realtek 8187 L monitor and reinjection mode: Yes, Data and specifications Notes: Known as Black Dragon, external antenna connector, it supports promiscuous mode, possibility of using high alfatools power application

You have many choices in selecting an antenna for a Wi-Fi wireless network adapter for your computer. If you use the antenna that came with the adapter and experience weak reception and slow Wi-Fi network performance, unscrew the stock antenna and replace it with a higher-gain model. Wi-Fi equipment makers rate compatible antennas in units called dBi. The higher the dBi rating, the stronger the antenna’s reception. Isotropic Antenna Wi-Fi antennas obey the same laws of nature that govern all other radio antennas. The isotropic radiator is the simplest theoretical radio antenna. It is a point source that produces radio waves equally in all directions. However, the isotropic antenna is just an idea; you cannot actually make one because it violates fundamental laws of physics -- thus, it is only theoretical. However, it can serve as a standard by which you can measure other antennas: the decibels --db -- compared to an isotropic radiator. Antenna Gain Every antenna has gain, a quality by which it increases the strength of a radio signal. Two main factors affect an antenna’s gain: shape and size. Shape influences the antenna’s directionality, or how it receives radio waves from different directions. The wavelength of the radio waves determine the radio’s size: an antenna receives signals best if its size matches the size of the radio waves, or is one-half or one-quarter the wavelength. For most uses, the better the antenna design, the higher the gain. Decibels When radio engineers compare the gain of antennas, they use the decibel system. A decibel is ten multiplied by the common logarithm of the ratio of two numbers. For example, if you compare 1 milliwatt and 10 milliwatts of radio power, you divide the second by the first and obtain 10. Taking the common log of that gives you 1, and multiplying it by 10 gives 10. The second amount is larger than the first by 10 decibels, or 10 dB. dBi Rating The dBi rating for a Wi-Fi antenna compares its performance to an isotropic antenna. If the isotropic antenna produces 1 milliwatt of radio wave power and the Wi-Fi antenna produces 2 milliwatts, that is 10 * log(2) or 3 dBi. If another antenna produces 3 milliwatts, that is 10 * log(3) or 4.8 dBi. Though the isotropic antenna doesn’t exist, it still serves as a reliable way to compare Wi-Fi antennas. You can compare the dBi ratings of the two antennas and choose one with the better dBi rating.