directional
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Antennas : 20M- Directional Helical Antenna
- This antenna is intended for the 20-meter Band.
There are two Voltage Fed Helical Dipoles, made with 2 slinky that fed with phase shift in 90 degree
[ Hits: 1083 | Votes: 1 | Rating: 8 ]
- A 144 MHz turnstile antenna
- Omnidirectional and horizontally polarized VHF antenna
[ Hits: 1297 | Votes: 4 | Rating: 5 ]
- 2m Big Wheel Antenna
- A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz
[ Hits: 1320 | Votes: 4 | Rating: 7.75 ]
- A Portable Quad for 2 Meters
- Backpacking, boating or mountaintopping ? Invest your time and pack this novel directional gain antenna on your next expedition
[ Hits: 1576 | Votes: 7 | Rating: 6.86 ]
- HB9CV antenna calculator
- Calculate dimension for HB9CV directional antennas
[ Hits: 3309 | Votes: 71 | Rating: 4.33 ]
- How to make a HB9CV
- The HB9CV is a well known two element antenna of a directional beam type with a forward gain of 4 to 5 dBd. This one is for two metres but it can be scaled, from the dimensions in the diagram, for other bands I have also made them for four and six metres
[ Hits: 1467 | Votes: 9 | Rating: 4.45 ]
- 2m Halo Antenna
- Construction and analysis of a low cost omnidirectional horizontally polarized antenna for 144 MHz, including notes on halo antenna stacking
[ Hits: 1011 | Votes: 9 | Rating: 5.34 ]
- Build your own Hexagonal Beam
- A web site dedicated to hex beam homebrewing. The hexagonal beam has become a wildly popular antenna. It is a directional antenna that provides great performance and does not require a full scale, expensive tower.
[ Hits: 1173 | Votes: 2 | Rating: 6.5 ]
- G3FNZ Loop Antenna
- A directional active loop receiving antenna system by J A Lambert G3FNZ article published on Radcom in november 1982
[ Hits: 814 | Votes: 2 | Rating: 7.5 ]
- Double Half-Delta Loop RX Antenna
- This wire antenna was developed to offer for a small, low-band, ground independent directional receiving antenna, it requires only two support poles. It is basically composed by two interconnected half delta loops and is better than a single flag or EWE, and almost as good as two phased EWE in the same space.
[ Hits: 939 | Votes: 0 | Rating: 0 ]
- Curtain Antenna
- An antenna for shortwave radio broadcasting consisting of rows and columns of dipoles, is a high gain directional antenna, designed for medium and long range communications.
[ Hits: 854 | Votes: 0 | Rating: 0 ]
- Antenna Basics : Directional Antennas
- An article describing basic concepts of antenna radiation, and in particular directional antennas like Yagi antennas or Quad antennas and how they determine the direction or signals.
[ Hits: 346 | Votes: 1 | Rating: 2 ]
- The Skew-Planar Wheel Antenna
- This is a very useful aerial design,forgotten for 40 years. This antenna offer a low omnidirectional pattern and has circular polarization. Can be used as a beacon antenna and simulations are for U-VHF and upper
[ Hits: 607 | Votes: 3 | Rating: 4 ]
- The Turnstile antenna
- An omnidirectional and horizontally polarized VHF antenna by EA4EOZ
[ Hits: 914 | Votes: 4 | Rating: 3.25 ]
- Cookie Cantenna Wi-Fi
- Make a cheap, portable, high performance (15-18 db) directional antenna out of commonly available parts that can be purchased in most grocery and hardware stores.
[ Hits: 6565 | Votes: 5 | Rating: 7.6 ]
- Easy 2.4 GHz Omnidirectional Antenna
- A step by step guide to easily make a homemade antenna for the Wi-FI band and for a fraction of the cost of a common WIFI commercial antenna.
[ Hits: 3383 | Votes: 63 | Rating: 7.37 ]
- Manpack Communications
- A complete bi-directional APRS messaging station, made up of a Byonics TT4 with the companion display, Byonics GPS5 receiver, compact keyboard, Baofeng UV-3R+ with a telescopic whip antenna by VE6AB
[ Hits: 620 | Votes: 2 | Rating: 5.5 ]
- Bi-Directional 2.4 GHz Amplifier
- Bi-Directional 2.4 GHz One Watt Amplifier With Receive Pre-Amplifier. This will show you how to add a bi-directional, 2.4 GHz amplifier to your Proxim Symphony for under $100
[ Hits: 317 | Votes: 0 | Rating: 0 ]
- Arduino Rotator Controller
- An rotator interface that interfaces a pc to a rotor or rotator controller, emulating a Yaesu GS-232A/B and Easycom protocols, made with Arduino
[ Hits: 3859 | Votes: 7 | Rating: 7.94 ]
- The express-pizza antenna
- Build a directional antenna for the 1.2 GHz band, in 15 minutes
[ Hits: 539 | Votes: 0 | Rating: 0 ]
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