wi fi antennas

wi fi antennas

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• 160m Short Vertical Loft Antenna - This is a very small vertical 160m antenna that fits in the loft of even my small house. It was built as a way of getting a signal out on 160m for local AM contacts, but the local noise level was far too high to allow it to be used at night for this purpose. However, on WSPR it did a pretty good job with WSPR spots from a very long way across Europe being received when running 2.5W out.
  [ Hits: 208 | Votes: 1 | Rating: 7 ]

• 2 element Yagi for 20 meter - This antenna was designed for the CQ WW CW 2009 at EA8URL. All elements are made out of fishing rods with an insulated copper cable fixed on the rods by cable ties. Both fishing rods and cable are UV resistant.
  [ Hits: 634 | Votes: 2 | Rating: 5 ]

• VHF Bi-Square Beam Antenna - 2 Wavelength ,2 Meter Bi-Square Beam , 5dbd gain. This antennas are very cheeap to build and their radiation pattern is similar to a figure 8 with maximum signal through the loop but they may be used as a near-omnidirectional antenna
  [ Hits: 188 | Votes: 2 | Rating: 9 ]

• Linear Loaded 40m Dipole - Dipole for 40m band. It is a simple linear loaded dipole feeded with 450-Ohm openwire feedline. Designed it for resonance at 7.050 MHz, can be tuned on 30m and 80m bands with an external antenna tuner. Build with simple electrical copper wire (2.5 mmq/13 awg) and two fishing poles with size of about 7 m/23 ft.
  [ Hits: 162 | Votes: 0 | Rating: 0 ]

• Slot-Cube Antenna for 6 Meters - Slot cubes are folded skeleton slot antennas with widened, folded dipoles bent into a cube to reduce size. QST Article 12 2019
  [ Hits: 581 | Votes: 2 | Rating: 5.5 ]

• Beverage switch-box - A home made Beverage system for portable use. The goal was to switch between 4 single Beverage antennas without interfering on the other receiving stations.
  [ Hits: 115 | Votes: 1 | Rating: 8 ]

• History of the Hexbeam Antennas - The original HEXBEAM was developed by Mike Traffic, N1HXA, in the early nineties. It is true that an M over W configured yagi antenna that resembled a butterfly was earlier tried successfully. But the advanced electrical design, the characteristic nesting concept and central terminal post that enable the multi band functionality along with the basic hardware design were all developed by Mike Traffie.
  [ Hits: 130 | Votes: 2 | Rating: 7.5 ]

• What is Horn Antenna - Horn Antenna - The energy of the beam when slowly transform into radiation, the losses are reduced and the focussing of the beam improves. A Horn antenna may be considered as a flared out wave guide, by which the directivity is improved and the diffraction is reduced. One of the first horn antennas was constructed in 1897 by Bengali-Indian radio researcher Jagadish Chandra Bose in his pioneering experiments with microwaves. The modern horn antenna was invented independently in 1938 by Wilmer Barrow and G. C. Southworth. This Horn model antenna is suitable employed in the UHF or SHF radio bands. Making this horn model antenna it will be easy for a beginner to make if it works in the 10GHz frequency, because small dimensions so it is not so difficult and also offers gain up to 25dBi.
  [ Hits: 74 | Votes: 0 | Rating: 0 ]

• Magnetic Loop HF antenna - An homebrew HF Magnetic loop made with 2m length of 6mm diameter copper pipe formed into a near circle as the low loss inductor, a short length of coax as a capacitor,a short length of mains cable, again as a fixed tuned capacitor, a tunable 365pF air spaced capacitor, and a small Jackson C804 airspaced variable with a small 3-35pF trimmer in parallel
  [ Hits: 131 | Votes: 0 | Rating: 0 ]
• Magnetic Loop Controller for 4 Antennas - This project is for those ham amateurs who do not have a commercial one . It's easy to build with a soldering iron, a plastic case and a little knowledge of arduino. The controller is made with budget components you can find easily in Internet. The main component is a cnc shield that fits over an Arduino Uno. Both made a compact, small and cheap controller.
  [ Hits: 133 | Votes: 2 | Rating: 10 ]

• Basic Microwave Antennas - Utility-Driven Tradeoff Analysis, if you want to geto on the microwave bands , you will have to choose the proper antenna for your operating conditions. How to decide is not always easy, and you may also decide to build your own antenna.
  [ Hits: 360 | Votes: 1 | Rating: 9 ]

• Backyard Multi-Band Wire HF Antennas - My Top Five Backyard Multi-Band Wire HF Antennas. A selection of the top 5 HF wire antennas for the backyard and for multi-band operation
  [ Hits: 793 | Votes: 3 | Rating: 8 ]
• Short Antenna for 40-30-20 Meters Band - This page describes an entirely simple, One-Knob matchbox that will match this antenna efficiently on 40, 30 and 20m, using a simple circuit that can be switched between series-resonant and parallel-resonant with just one banana jumper
  [ Hits: 238 | Votes: 1 | Rating: 7 ]

• Practical Antenna Modeling with 4NEC2 - Presentation about Practical Antenna Modeling Using the NEC Codes with examples of HF wire antennas and 4NEC2. How to define and edit the models, Running the simulations, Work some examples, Variables usage, Deal with Feed Lines and ground
  [ Hits: 481 | Votes: 0 | Rating: 0 ]
• Folded Dipoles in Yagi Uda Antennas - A folded dipole is an antenna, with two conductors connected on both sides, and folded to form a cylindrical closed shape, to which feed is given at the center.
  [ Hits: 314 | Votes: 2 | Rating: 4.5 ]

• 80m-40m Dual-Band Vertical - A dual band 40-80 vertical antenna on an 18m Spiderbeam Fiberglass Spiderpole, with monoband performance
  [ Hits: 160 | Votes: 2 | Rating: 10 ]

• Ham Census - What do amateur radio operators worldwide, think of their passion? What do we wish for? What are we frustrated about? How many of us are active, versus those that are taking a break? Do we have favorite radios, antennas, or even favorite cw paddles? Do we prefer one contest over another? The best way to find out is if we all participate in Ham Census. Join in and let all amateur radio operators know your thoughts "share your views" then you can find out what everyone else is thinking, in real time. Help shape the future of ham radio by participating in the world's most complete survey of amateur radio.
  [ Hits: 106 | Votes: 2 | Rating: 8 ]

• VHQ HEX BEAM Antennas - New generation Hex Beam Antennas. VHQ HEX Products, located in Peterborough, NH, is owned and operated by David M. Lavoie. Our products are designed to solve issues encountered in Ham radio applications and move with todays configurations in an ever changing climate
  [ Hits: 259 | Votes: 0 | Rating: 0 ]

• WiFI vSWR Meter - When building antennas for the Wifi band (Like the 8dBi omni), a need for an easy way to check the antennas arose. A Voltage Standing Wave Ratio (VSWR) meter useable at the 2.4GHz band is however, hard to find.
  [ Hits: 131 | Votes: 2 | Rating: 3.5 ]

• RTL SDR with Active Antennas for HF - Experiences with software defined radios SDR and active antennas using the RTL SDR dongle and Spyverter HF up-converter
  [ Hits: 181 | Votes: 2 | Rating: 10 ]

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