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Everything posted by Admin

  1. ,,,and what is inside...
  2. ,,,it is also possible with an isolator for the vibrator but to change the distance from the reflector...!!
  3. This project is dedicated to Doyt R. Hoverman (b.1913), the man who created and did the early work on the Hoverman antenna at a time when antenna modeling programs did not exist. His work would have been entirely created and improved by field testing, trial and error, and with a great amount of calculation without the benefit of electronic devices. Without his efforts, our work would not have been. Doyt Hoverman passed away in December, 1989 at Van Wert, Ohio, USA. Technical data Simulation With insulating spacers
  4. 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:
  5. ,,,you can use a tin sleeve around the coaxial cable as below...
  6. MONA-2 MIMO BOX Universal remote antenna with the ability to accommodate any modem, router and convenient change of SIM card. Frequency 790-960/1700-2700 MHz. CU=7.5-10 dBi + Box. 2xSMA-male connector. It is recommended for use at distances up to 5 km from the BS. Support for aggregation of all frequencies
  7. Eco, the box is very big and has no point, and the biquad antenna is connected like this...
  8. 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...
  9. ,,,maybe this will help you understand something...
  10. 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 circular polarization antenna.
  11. RF Elements StationBox 5 GHz 17 dBi MIMO is a plastic enclosure with integrated MIMO antenna 17 dBi, in which you install cards in the routers. The case is designed to create weatherproof access points that are installed outdoors. Quality ABS plastic material the case provides reliable protection circuit Board router from moisture and sunlight. StationBox can be used at subzero temperatures. StationBox secured with plastic ties that come in the kit. To adjust the case at different angles you can buy a special mount NanoBracket. Built-in antenna 17 dBi designed to operate on the 5 GHz frequency and provides high-speed data transmission technology MIMO. To connect built-in antenna to the router using pigtails (adapters) that are purchased separately. Features Case Weight:372 g Dimensions:19 × 5 × 18.7 cm Material:ABS plastic, UV-stabilized, weatherproof Antenna Frequency:5 GHz Gain:17 dBi Technology:MIMO Compatibility MikroTik:RB411, RB411A, RB411AH, Crossroads Ubiquiti:WISPstation – possible to install 2 PCs, RouterStation, RouterStation Pro
  12. Wifislax 2017 - a boot disk with a set of tools that will help test your wireless networks, identify and resolve different vulnerabilities in them. Contains a large number of drivers for the network cards from different manufacturers integrated into the Linux kernel and provides their support. Wifislax 2017 – a high level of specialized system-a software tool for security analysis of wired and wireless networks. Is a LiveCD preloaded with Slackware. Can be used for analysis and verification of security systems LANs of different types, the study and evaluation of Wi-Fi networks, as well as in forensic purposes. Wifislax 2017 out of the box comes with a huge number of drivers for network cards, both wired and wireless types, is integrated in the kernel Linux that provides native support for the vast majority of currently available network devices from different manufacturers. Wifislax 2017 is based on a code system of SLACKWARE (in earlier versions of the distribution was used a combination of SLAX and PORTEUS) and can be installed on a hard disk for permanent use. Being a "modular" operating system, it supports the expansion of functionality using the XZM-file. A GUI is provided by three related systems – KDE 4 (installed as default), Xfce and Openbox. In the distribution uses multiple cores – standard and PAE, you can switch between. Running the system with the USB stick: For recording, use the program UNetbootin, he checked, everything works fine. http://foro.seguridadwireless.net/live-wifislax/wifislax64-1-1-final-para-descarga-64220/ Modulos extra para wifislax64-1.1 http://foro.seguridadwireless.net/live-wifislax/modulos-extra-para-wifislax64-1-1/
  13. A cantenna ( blending the words can and antenna) is a homemade directional waveguide antenna, made out of an open-ended metal can. Cantennas are typically used to increase the range of (or discover) wi-fi networks. Although some designs are based on a can, this tube is too narrow to increase the 2.4 GHz signal by a useful amount, although at 5 GHz it would be about the right size. However, a cantenna can be made from various cans or tubes of an appropriate diameter. Some designs include a pole mount to elevate the cantenna.
  14. Here is another DIY antenna, this time for GSM/3G/4G usage. The design was calculated for 800-2100MHz and works well in this range. The antenna has a very broad bandwidth with a low gain and can be used for any application within the frequency range. Since the results are very good even up to 3GHz the antenna is also useful for WiFi. As well as ADS-B (flight radar) because 1090MHz is covered too. In general an excellent antenna for rtl-sdr operations. Based on this calculator.
  15. Have a router with built in modem Huawei B683. Used in the country, the range is 2400 there clean. All anything, but Wi-fi gives it worse than a smartphone, the plot is not even enough, although installed in the wooden deck solder the pigtails and screw conventional pipettes from any router.Track is better to cut, as this connector is not found, and if found, it will break with the first poke. In extreme cases, all easy to restore in place
  16. The ENH202 2.4GHz Outdoor Wireless Ethernet Bridge delivers high-performance 11n wireless speeds to 300 Mbps on the 2.4 GHz band, supporting short and long-range, PtP applications such as digital signage displays for schools, retail and hospitality, or outdoor POS systems. It is ideal for deployment in rural locations where 2.4 GHz is not as prevalent. High 29 dBm Transmit Power Extends Wireless Coverage Outdoors Focused 10 dBi Directional Antenna Beam for Long-Range Connections Industrial-Grade, IP65-Rated Housing Withstands Harsh Environments PoE-Compatible 10/100 Port & Second 10/100 Port for Connecting an IP Camera or AP
  17. Wireless access point MikroTik SXT LTE does not work in the 802.11 standard, and is equipped with LTE-modem with a directional antenna dual channel to work in LTE networks of mobile operators at speeds of up to 100Mbit. Maximum download speed up to 100 Mbps, and the return of up to 50 Mbps. SXT supports the most popular LTE band FDD - LTE 3 (1800 MHz) and 7 (2600 MHz). Has mini-SIM slot support 2G/4G network. The dimensions of the antenna
  18. TP-Link CPE210/220 is a 2.4Ghz outdoor access point similar to Ubiquiti NanoStations. There is also a 5GHz Version of this AP, the TP-Link CPE510/520. The device has a built-in 12dBi 2x2 dual-polarized directional MIMO antenna with a beamwidth of 65° (H-Plane) and 35° (E-Plane)
  19. The Polaplexer is a microwave antenna, or antenna feed, which supports two simultaneous inputs or outputs that are independent and isolated from each other by use of orthogonal (at right angles) linear polarization. The isolation can be as much as 30 - 35 dB. Its main use is to permit full duplex operation with a single antenna, in which one port is used to transmit and the other to simultaneously receive ,,,to see this ....http://www.ham-radio.com/sbms/sd/ppxrdsgn.htm
  20. Triton_Mgn says,,, Good afternoon, give the antenna a good antenna for the 1800 MHz mimo Found 2 antennas on the forum: 1 - http://www.lan23.ru/forum/showthread.php?t=12671 But, unfortunately, not its size at the desired frequency, tell me who knows. 2 - http://www.lan23.ru/forum/showthread.php?t=10879 Could you tell me the thickness of the disc, can I use galvanized? In the drawing, the antenna of this size for the lower frequency 1747,5 pink color, and upper 1842,5 green. Why, then, in the drawing there are dimensions in blue? My answer is,, it can build a patches antenna instead of a disks, a horizontal patch antenna group (at one end of the frequency band) and the other group with vertical polarization (at the other end of the frequency band)
  21. If we had to participate in field tests of a transceiving apparatus, part of which was various types of antennas, and as Omni-directional, they are independent from the design and the claimed gain in performance for range transmission and reception is insignificantly different from each other. A significant difference was their price. Of greater importance, as we understand it from practice, had such option antenna as it is efficiency, which directly connected with the working surface (the larger antenna size than she is better), but not with the stated gain. So simple homemade omnidirectional antenna is not what is not inferior to similar fancy designs. For beginners, we don't would advise to grasp for the production of Omni-directional antennas with a large gain such as collinear or the like. Without skills and lack measuring instruments to achieve from these structures excellent results not will. The antenna that we propose to assemble, has an important property. First of all, it is quite simple and broadband (bandwidth 200 MHz), this means that miss relative to the fundamental frequency of transmission and reception as a result of the inaccuracy construction will be difficult, which is an important factor in the case the lack of measuring devices. However, simple a homemade antenna will differ markedly from the purchase of the product may because a nested design energy of creativity yields results. The antenna is a quarter-wave vibrator with a counterweight
  22. Double Patch Regular Polyhedron The rectangle 94*68 mm, the sides of the cutting plane 28 and 16 mm rack Diameter 6 mm. each patch has an input impedance of 100 Ohms, between 0.5 *Lambda of the connecting line. Obtained by parallel connection of 50 Ohms. And cool chart SWR the broadband is a patch in the form of an pseudo- ellipse with eccentricity 0.8, 2 Patches of narrow-band, but with the increase of the gap band of operating frequencies increases at 0.1 Lambda reaches 10/11 %. When band gaps, increases the ability of multi-mode excitation. With the increase of the gap increases and the value of the input impedance. Based on this information, can built a patch with a gap from the reflector is 15 mm. The line length is 0.5 L, so its width is not critical. In this project its width is about 2 mm d = 1 mm The gap( between the surfaces) 15 mm width to reflector Conn. line 13 mm. the distance between the two coherent emitters choose, usually based on two criteria. Or the maximum gain, then it's 1 lambda or a little more. Or at a minimum side lobes, then it is less than lambda, about 0.7/0.8.
  23. Ethernet and wireless networks each have advantages and disadvantages; depending on your needs, one may serve you better than the other. Wired networks provide users with plenty of security and the ability to move lots of data very quickly. Wired networks are typically faster than wireless networks, and they can be very affordable. However, the cost of Ethernet cable can add up -- the more computers on your network and the farther apart they are, the more expensive your network will be. In addition, unless you're building a new house and installing Ethernet cable in the walls, you'll be able to see the cables running from place to place around your home, and wires can greatly limit your mobility. A laptop owner, for example, won't be able to move around easily if his computer is tethered to the wall. There are three basic systems people use to set up wired networks. An Ethernet system uses either a twisted copper-pair or coaxial-based transport system. The most commonly used cable for Ethernet is a category 5 unshielded twisted pair (UTP) cable -- it's useful for businesses who want to connect several devices together, such as computers and printers, but it's bulky and expensive, making it less practical for home use. A phone line, on the other hand, simply uses existing phone wiring found in most homes, and can provide fast services such as DSL. Finally, broadband systems provide cable Internet and use the same type of coaxial cable that gives us cable television. If you plan to connect only two computers, all you'll need is a network interface card (NIC) in each computer and a cable to run between them. If you want to connect several computers or other devices, you'll need an additional piece of equipment: an Ethernet router. You'll also need a cable to connect each computer or device to the router. Once you have all of your equipment, all you need to do is install it and configure your computers so they can talk to one another. Exactly what you need to do depends on the type of network and your existing hardware. For example, if your computers came with network cards already installed, all you'll need to do is buy a router and cables and configure your computers to use them. Regardless of which type you select, the routers, adapters and other hardware you buy should come with complete setup instructions. The steps you'll need to take to configure your computers will also vary based on your hardware and your operating system. User manuals usually provide the necessary information, and Web sites dedicated to specific operating systems often have helpful tips on getting several different computers to talk to each other. Next, we'll examine the advantages and disadvantages of wireless networks. Nervous about Networking? Most people who have a basic familiarity with computers can set up a network without much help. But the idea of installing cards and making connections makes some people nervous. Many Internet service providers (ISPs) offer home networking packages. For a monthly fee (and sometimes an initial setup cost), the ISP will provide you with the hardware and support you need to build and maintain your network. The easiest, least expensive way to connect the computers in your home is to use a wireless network, which uses radio waves instead of wires. The absence of physical wires makes this kind of network very flexible. For example, you can move a laptop from room to room without fiddling with network cables and without losing your connection. The downside is that wireless connections are generally slower than Ethernet connections and they are less secure unless you take measures to protect your network. If you want to build a wireless network, you'll need a wireless router. Signals from a wireless router extend about 100 feet (30.5 meters) in all directions, but walls can interrupt the signal. Depending on the size and shape of your home and the range of the router, you may need to purchase a range extender or repeater to get enough coverage.