turn antenna

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turn antenna

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Antennas : 2M
  • A 144 MHz turnstile antenna - Omnidirectional and horizontally polarized VHF antenna
    [ Hits: 1297 | Votes: 4 | Rating: 5 ]
  • VHF Big Wheel Antenna - A popular 2 meter antenna returns in an improved, easier to reproduce form, 2008 QST article
    [ Hits: 2400 | Votes: 4 | Rating: 7.5 ]
  • 2m Quad Turnstile Antenna - The loops are made of 10 mm round aluminum tube. No bending pliers was used to gently bend 90 degrees to obtain a square with 53 cm inner sides. Each loop has an impedance of approximately 100 Ohm. To connect both radiators in phase, a quarter wave long feeder of 100 Ohm is required.
    [ Hits: 207 | Votes: 0 | Rating: 0 ]
Antennas : 6M
  • Six Meter Quad Turnstile Antenna - Simple 6 Metre DX Antenna based on an article by LB Cebick in QST May 2002 on a Quad Turnstile antenna. This antenna is basically two full wave loops mounted at right angles fed 90 degrees out of phase to produce an omni-directional horizontally polarized pattern
    [ Hits: 701 | Votes: 2 | Rating: 9.5 ]
  • 6 Meter Quad Turnstile Antenna - A quad turnstile consists of two cubical quad loops oriented in a diamond configuration and angled 90 degrees apart from one another with both diamonds sharing the same top and bottom points
    [ Hits: 365 | Votes: 1 | Rating: 10 ]
Antennas : Antenna Calculators
  • The Antenna Torque Calculator - This unique online tool helps Ham Radio operators to choose the right rotator for medium and large HF antenna systems. The algorithm implemented in this calculator is the result of 40 years of experience in the HF Antenna sector. Given the Wind Speed, the total antenna square area, and the boom length, it will return the calculated torque value.
    [ Hits: 178 | Votes: 1 | Rating: 1 ]
Antennas : Baluns
  • Making a good balun - The normal way to make a good balun is to wind a core with a bifilar winding about 8-10 turns, and then connect the coax to one side and the antenna to the other.
    [ Hits: 499 | Votes: 0 | Rating: 0 ]
Antennas : Dipole
  • 10-80 Slinky Dipole - A slinky dipole antenna that covers almost all HF bands mede with a flexible 90-turn metal spring by N4SPP
    [ Hits: 1374 | Votes: 7 | Rating: 6.86 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • End-Fed HalfWave Matching Unit for SOTA operations - An end-fed half wave antenna matching unit made of 3:24 turns ratio on a FT140-43 toroid with a 150pF capacitor across the input.
    [ Hits: 259 | Votes: 0 | Rating: 0 ]
  • The End-Fed Half-Wave Antenna - Presentation - A very well done presentation about End-Fed Half-Wave antennas. This PDF document contains a summary of experiences in how to build custom EFHW antennas. Includes an interesting comparison table of UnUn configurations with recommended toroids, Wire size, turns and capacitors. An useful recap on common errors in building homebrew EFHW Ununs completes the document.
    [ Hits: 406 | Votes: 3 | Rating: 8.67 ]
Antennas : G5RV
  • 160-RV - Top Band G5RV Antenna - How to turn a G5RV antenna into a 160 meter band antenna with easy to find parts. A G5RV adapter for tob band by Thomas AD1B
    [ Hits: 2911 | Votes: 5 | Rating: 5.8 ]
Antennas : HexBeam
  • Understanding the Hexbeam Antenna - The Hexbeam is a great little antenna! It should be high on your list of options if you want a design that can be multi-banded, exhibits useful gain and directivity, is very lightweight, has a small turning radius, and which lends itself readily to Do It Yourself construction.
    [ Hits: 505 | Votes: 4 | Rating: 8 ]
Antennas : Loop
  • RX Loop Antenna for 80 and 160 Meters - Four or Five turn one meter loop antenna for 80 and 160 meter band. This home made receive only antena can be assembled in a small place.
    [ Hits: 247 | Votes: 1 | Rating: 1 ]
Antennas : Magnetic Loop
  • Magnetic Loop Antennas  updated - A complete guide to magnetic loop antenna construction, with analysis of multi-turn and single-turn magneti loops, and and insight on choosing the optimal capacitor, or homebrewing your own butterfly capacitor
    [ Hits: 1251 | Votes: 1 | Rating: 10 ]
Antennas : Quagi
  • The Quagi Antenna Turns 40 - It has been 40 years since the VHF-UHF Quagi antenna--a combination of the desirable features of a Yagi and a cubical quad--was developed and the design was first published in the newsletter of the Southern California VHF Club, a forerunner of today's Western States Weak Signal Society.
    [ Hits: 467 | Votes: 1 | Rating: 10 ]
Antennas : VHF UHF
  • The Turnstile antenna - An omnidirectional and horizontally polarized VHF antenna by EA4EOZ
    [ Hits: 914 | Votes: 4 | Rating: 3.25 ]
  • VHF Yagi from Old TV Antenna - 6m/2m/70cm Yagi Antenna Built from Old TV Antenna This turned out to be a great little antenna. It works the 6 meter, 2 meter and 70 centimeter bands. You can use one common feedpoint or two seperate feedpoints depending on how you would like to connect this antenna to your transceiver.
    [ Hits: 731 | Votes: 2 | Rating: 10 ]
  • DIY Dual Band 144-440 MHz vertical antenna  updated - A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.
    [ Hits: 1367 | Votes: 14 | Rating: 5.5 ]
Antennas : Vertical
  • 20m 40m trapped squid pole antenna - An homemade portable vertical antenna with a trap near the mid point of the main element. The trap is made with 42mm diameter PVC pipe with 9 turns of wire on it
    [ Hits: 3017 | Votes: 5 | Rating: 5.2 ]
Operating Aids : History
  • Notable Patents on Antenna Design - Patents of most popular antenna models including Zeppelin Antenna, Beverage Antenna , Franklin Antenna , Yagi-Uda Antenna , Sterba Antenna , Rhombic Antenna , Turnstile Antenna , Folded Dipole Antenna , Coaxial Antenna , Slot Antenna , Discone Antenna , Quad Antenna Element , Log Periodic Antenna , Swiss Quad Antenna
    [ Hits: 285 | Votes: 0 | Rating: 0 ]

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