eas antenna

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Antennas
  • Half-Square antennas - This doubet antenna is a half wave dipole antenna easy to build, in french
    [ Hits: 2624 | Votes: 2 | Rating: 1.00 ]
Antennas : 10M
  • Easy wire antenna for 40-20-10 meters  updated - PE3HMP project of a triband wire antenna for 40 20 10 meters band, made using home made coils
    [ Hits: 9688 | Votes: 4 | Rating: 5.00 ]
Antennas : 20M : 20 meter Dipole Antennas
  • 40/20 Trap Dipole - An easy to make trap dipole antenna for 40 and 20 meters
    [ Hits: 6511 | Votes: 7 | Rating: 5.81 ]
Antennas : 40M
  • Multi-Band Super Mini Loop Antenna - How to make the Super antenna. To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band
    [ Hits: 19738 | Votes: 3 | Rating: 4.00 ]
Antennas : 70cm
  • 6 element UHF Yagi antenna - A standard 6 elements design scaled for UHF application. All material used in this project are easily obtainable tubes and rods which is limited within a total budget of $18.
    [ Hits: 3307 | Votes: 10 | Rating: 6.79 ]
Antennas : 80M
  • 80 Meter Pizza Pan Antenna - This is a resonant, half-wave, vertical antenna. It takes up little space in the back yard, was designed for operation on a single frequency 80 meter PSK net, and is reasonably inexpensive to construct by Chuck Hines, K6QKL
    [ Hits: 3326 | Votes: 3 | Rating: 5.00 ]
Antennas : Array
  • The N4GG Array - Need a simple, nearly invisible wire antenna with reasonable gain, lowangle radiation (for DXing) and multiband capabilities? Check out this long-overlooked design that requires no antenna tuner
    [ Hits: 1740 | Votes: 6 | Rating: 9.00 ]
Antennas : Baluns
  • How to Make a Great 9:1 RX Transformer - There are lots of good designs for matching transformers for receiving antennas. Make it yourself it's cheap and easy, and very high performance. This is the design used in the TRX-9 transformers.
    [ Hits: 2809 | Votes: 0 | Rating: 0.00 ]
Antennas : Dipole
  • Short Tri-Band Vee Dipole - A three band short Vee antenna is feasible with two legs per side on a dipole. 10-15-20 meters by W8HDU
    [ Hits: 828 | Votes: 2 | Rating: 6.50 ]
Antennas : Homebrewing Techniques
  • AA5AU PVRC Antenna Mount Page - The PVRC Mount is a tilt-head type antenna mount that allows large HF Yagi antennas to be easily installed on towers.
    [ Hits: 1599 | Votes: 0 | Rating: 0.00 ]
Antennas : Multiband
  • Building the G3TXQ Hex Beam - This site provides guidelines to build a G3TXQ broad band hex beam R.F. antenna for the five amateur radio bands, 20, 17, 15, 12 and 10 meters. The G3TXQ broad band hex beam is a new development and actually easier to build than the classic hexbeam by K4KIO
    [ Hits: 4030 | Votes: 6 | Rating: 8.17 ]
Antennas : Theory
  • Antenna Measurement Theory - Introduction to Antenna Measurement by orbit /fr pdf file
    [ Hits: 1538 | Votes: 0 | Rating: 0.00 ]
  • Antenna Measurements - The electrical characteristics of an antenna that are of interest to obtain by direct measurement are the frequency at which the antenna is tuned, the gain and radiation pattern
    [ Hits: 660 | Votes: 3 | Rating: 4.00 ]
  • Earth Systems - In order to resonate at a particular frequency, an antenna needs to be at least one half wave length long. Antennas below a 1/2 wave are dependent on a ground system for resonance as well.
    [ Hits: 896 | Votes: 1 | Rating: 3.00 ]
Antennas : Theory : Antenna Gain
  • Antenna Gain to ERP - A radio's transmitting power can be concentrated along the horizon by use of a GAIN antenna. Although you may still be transmitting with four watts of power, your effective radiated powerwill be greatly increased. This table shows the effects of antenna gain on a transmitter with 4 watts of transmit power.
    [ Hits: 1211 | Votes: 4 | Rating: 4.50 ]
  • Measuring antenna gain - Practical ways to get accurate results by Wayne Overbeck, N6NB
    [ Hits: 940 | Votes: 2 | Rating: 3.50 ]
Antennas : Tuners
  • MFJ-940 modification - The MFJ-940 VERSA TUNER II is a useful little antenna tuner for the HF-bands. However it suffers from a minor design error, which can be easily rectified.
    [ Hits: 2244 | Votes: 2 | Rating: 7.50 ]
Antennas : WiFi
  • Practical Wifi Antenna Measurement - This page describes a simple way to determine the main RF characteristics of a Wifi (IEEE802.11b/g wireless LAN) antenna.
    [ Hits: 2726 | Votes: 3 | Rating: 4.00 ]
Antennas : Yagi
  • Yagi-Uda Antenna Priority listing - The Yagi-Uda antenna, information on basic design, project and measure of Yagi-Uda antenna, include free repository/sample of beam antenna.
    [ Hits: 1151 | Votes: 6 | Rating: 7.67 ]
  • Yagi antenna for PMR446 - Lowcost yagi antenna for PMR446, easy to build by ON2BBP
    [ Hits: 2701 | Votes: 8 | Rating: 7.50 ]
Manufacturers : Antennas : HF
  • QHtenna - The QHtenna Turnstyle antenna system offers horizontal omni-directional antennas for the Ham frequencies in the VHF/UHF range of 50 Mhz to 432 Mhz. The Crossed Field Antenna" (CFA) by QHtenna offers a small antenna for limited space, maritime mobile, and seasonal DX work.
    [ Hits: 720 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Test Equipment : Frequency Counter
  • Anritsu - Provides technology and solutions for the electronic test and measurement, optical, rf and microwave, wireless, wired, telecommunications. Make Frequency Counters, Antenna and spectrum analyzers, power meters, signal generators
    [ Hits: 602 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Dummy Loads
  • Oil filled dummy load - This project will demonstrate how to build a dummy load, and measure power correctly by AI4JI
    [ Hits: 2850 | Votes: 9 | Rating: 7.11 ]
Technical Reference : Radio Direction Finding
  • RDF Yagi with Tape Measure elements - This antenna is an adaptation of the RDF2 two element, close spaced Yagi antenna described in the May, 1996 issue of 73 Amateur Radio Today Magazine.
    [ Hits: 189 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Receivers
  • 80m Passive Heterodyne Receiver - Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m.
    [ Hits: 953 | Votes: 1 | Rating: 1.00 ]
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