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am antenna

1465 links - and 9 categories

Antennas : 40M : 40 meter Dipole Antennas
  • Trapped dipole for 80 and 40 m - This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.
    [ Hits: 2730 | Votes: 0 | Rating: 0 ]
Antennas : Antenna Calculators
  • Antenna wire catenary calculator - This is a simple calculator for solving the antenna wire catenary between to end points given the design wind speed, mass per unit length of the wire, wire diameter and Gross Breaking Strength of the wire.
    [ Hits: 2898 | Votes: 8 | Rating: 2.75 ]
Antennas : Dipole
  • An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX
    [ Hits: 8726 | Votes: 5 | Rating: 6 ]
Antennas : Indoor
  • The Indoor spiral dipole - An attic indoor antenna successfully implemented by N9RET by using two runs of 2-conductor wire
    [ Hits: 4507 | Votes: 2 | Rating: 5.5 ]
Antennas : Magnetic Loop
  • Water tuned loop antenna - A QRP 900 grams hydraulic tuned small magnetic loop antenna by PY1AHD Alex.
    [ Hits: 2194 | Votes: 0 | Rating: 0 ]
Antennas : Multiband
  • JJ6 Antenna - Beam antenna for 14-18-21-24-28-50 Mhz by G4ZU in french
    [ Hits: 1555 | Votes: 2 | Rating: 1 ]
Antennas : Portable Antennas : Receiving Antennas : Spiral
  • Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length
    [ Hits: 3765 | Votes: 9 | Rating: 6.22 ]
Antennas : Theory
  • Importance of noise reduction in wires antennas - An old post by John Doty about effects of noise in longwire antenna.
    [ Hits: 1661 | Votes: 0 | Rating: 0 ]
  • Understanding Antennas For The Non-Technical Ham - A Book By Jim Abercrombie, N4JA. Reason for writing this book is to educate you so you can make an informed choice concerning the best antenna for you. Another reason is to dispel the many antenna myths that circulate in the amateur communit
    [ Hits: 1542 | Votes: 3 | Rating: 6.67 ]
Antennas : Tuners
  • FBK portable mini tuner - Tunes symmetric/coax/longwire antenna's between 1.8-50MHz
    [ Hits: 3777 | Votes: 0 | Rating: 0 ]
Antennas : VHF UHF
  • 7db tape measure yagi beam for RDF - A 3 element yagi beam antenna made with a tape measure. This design exhibits a very clean pattern and is perfect for RDF use.
    [ Hits: 4191 | Votes: 9 | Rating: 4 ]
Manufacturers : Accessories
  • QRPproject - QRP and Homebrew HAM Radio by DL2FI and DL7NIK QRP Made in Germany and more QRP Kits, qrp transceivers, accessories, mini keyers dealer for antennas, atu and more accessories
    [ Hits: 10698 | Votes: 11 | Rating: 6.64 ]
  • microHAM - Accessories for your hamshack, such as Band Decoders, various types of Antenna Switches, Antenna Stacking devices, special devices designed dedicated for the SO2R operating technique, USB Interfaces, cw keyers and many others
    [ Hits: 3603 | Votes: 2 | Rating: 10 ]
Shopping and Services : Accessories
  • DX-Wire - German internet shop for difficult-to-find components, which are used by radio amateurs. Antenna parts, masts and mounts, cables connectors, wires, rf-chockes, toroids cores, twin-lead, teflon -strand, insultators
    [ Hits: 4201 | Votes: 6 | Rating: 6.67 ]
Shopping and Services : Cables and Connectors
  • Ridge Equipment - Sells a broad range of Electronic Test Equipment as well as a full line of Cables, Connectors, Loads and Accessories for commercial or amateur antenna installation and repair.
    [ Hits: 395 | Votes: 1 | Rating: 2 ]
Software : Grid Bearing and Maps
  • Beam DX - BEAM_DX is a free windows software for radioamateurs or radio listeners usage. It allows to point a directionnal antenna towards an azimuth, a locator, an international prefix or any other geographical position on earth predefined by its latitude and its longitude
    [ Hits: 2926 | Votes: 4 | Rating: 5 ]
Software : Linux
  • IBP - Beacon Monitor - Linux program that helps one with monitoring the beacons of the International Beacon Project, by continuously showing which beacon is transmitting on which frequency, along with the distance and antenna directions by PA3FWM
    [ Hits: 1488 | Votes: 2 | Rating: 5.5 ]

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