magnetic

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magnetic

204 links - and 3 categories

Antennas : 160M
  • Magnetic Monster Loop Antenna for 160m - A monster magnetic loop antenna for 160 meters band. This Magnetic loop is optimized for 1840 Khz + 50 Khz. PDF Article published on La Radiospecola 10.22
    [ Hits: 837 | Votes: 2 | Rating: 10 ]
Antennas : Coils
  • An introduction to the air cored coil  updated - We use the term air core coil to describe an inductor that does not depend upon a ferromagnetic material to achieve its specified inductance. This covers the cases where there really is just air inside as well as windings upon a different insulator such as bakelite, glass or PTFE etc. Do you need an air coil?
    [ Hits: 102 | Votes: 1 | Rating: 2 ]
Antennas : Magnetic Loop
  • Portable magnetic loop antenna - A portable loop antenna, made with a 3 meter loop resonates with the chosen capacitor from just below 7MHz to about 28.300MHz which makes it usable on the bands from 40m to 10m.
    [ Hits: 166 | Votes: 2 | Rating: 9 ]
  • 2 meter Magnetic Loop Antenna - VHF Antenna in a Lunchbox, The Magnetic Loop on Two Metres. The two metre magnetic loop is a compact antenna which can easily be hung up under the eaves, the carport, or any other place where space is limited including indoors
    [ Hits: 515 | Votes: 1 | Rating: 1 ]
  • Magnetic Loop for 20 meters band - A magnetic loop antenna designed for 14 MHz. This kind of antennas is also known as STL, small transmitting loop and can be an excellent solution when you are not allowed to put antennas on your roof
    [ Hits: 204 | Votes: 0 | Rating: 0 ]
  • MagLoop 10 - 24 MHz - Pictures of a magnetic loop antenna for hf bands that works from 10 MHz to 24 MHz
    [ Hits: 165 | Votes: 1 | Rating: 3 ]
  • 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: 131 | Votes: 2 | Rating: 10 ]
  • Multi-Band 4 Foot Magnetic Loop with Gamma Match - This antenna works on 17, 20, and 30 meters, with the best bandwidth on 20 meters. The bandwidth on 17 and 30 is quite small but usable. There is a 20 KHz bandwidth on 20 meters.
    [ Hits: 136 | Votes: 2 | Rating: 10 ]
  • K8NDS Magnetic Loops - Fractional Wave Loops antennas are a sort of magnetic loop antennas that differs in several aspects from the standard ones. Author is now SK however in his page he posted several examples and interesting links
    [ Hits: 161 | Votes: 0 | Rating: 0 ]
  • Loop magnetic antenna for 80-160 meters band - Jeri Ellsworthhas started a video series devoted to building a magnetic loop antenna for the 160- and 80-meter bands. The first video, included after the break, is an overview of the rationale behind a magnetic loop
    [ Hits: 174 | Votes: 0 | Rating: 0 ]
  • Magnetic Loop Antennas for 40-80-160m - This magnetic loop DIY site is ment to be an introduction into making DX high quality magnetic loop antennas that will beat any dipole
    [ Hits: 231 | Votes: 2 | Rating: 8.5 ]
  • A More Efficient Magnetic Loop Antenna - The idea behind this antenna was to use multiple conductors in parallel to reduce the resistance losses in the antenna , and thereby improve the efficiency.For a given magnetic loop antenna, doubling the number of conductors from one to two will typically increase efficiency by about a factor of two. There is a limit, and beyond three or four conductors further increases are small, and may not be worth the bother.
    [ Hits: 212 | Votes: 2 | Rating: 5.5 ]
  • Magnetic Loop 600 KHz-4MHz - The antenna is built on a cross-shaped frame with spar width (and height) of 48 inches, providing a height of 52 inches and a width of 49 inches. This antenna costs only about $45 to construct and can be built in just a few hours using simple hand tools. The best part is that the performance on 160M and 80M is excellent
    [ Hits: 172 | Votes: 3 | Rating: 4.33 ]
  • K1FM Mini Magnetic Loop - Original HF magnetic loop antenna designed by the author to work in conjunction with QRP transceivers like the FT-817 in portable operations. In this configuration the loop can operate from 30 to 10 meters. Using a two spires radiator of the same diameter it also covers 40 meters.
    [ Hits: 116 | Votes: 1 | Rating: 8 ]
  • Outdoor 80m/40m bands Magnetic loop antenna - No matching adjustments needed. Directly perfect match to 50 Ohms using a remotely switched wideband transformer
    [ Hits: 225 | Votes: 0 | Rating: 0 ]
Antennas : Yagi
  • DIY Yagi Antenna - This article describes the phases for the construction of a Yagi antenna. The calculations of the parameters are made using 4NEC2 software. This type of antenna is used for transmissions and receptions of electromagnetic waves. The project shown here refers to the frequency of 433.92 MHz.
    [ Hits: 107 | Votes: 4 | Rating: 3.5 ]
Manufacturers : Antennas : HF : Magnetic Loop
  • W6LVP Loop Antennas - Magnetic loop receive antennas manufacturer. W6LVP loops cover 2200 through 10 meters (135 kHz through 30 MHz) with no tuning or adjustment.
    [ Hits: 144 | Votes: 1 | Rating: 4 ]
Propagation : Propagation Forecast
  • Current Space Weather Parameters - Solar Wind Velocity and Auroral Storm Potential the website provides also current magnetic indices like last Kp values and predicted Kp values.
    [ Hits: 59 | Votes: 0 | Rating: 0 ]
Propagation : Resources
  • Propagation on 630 Meters and 2200 Meters - This is a theoretical look at propagation on 630-Meters and 2200-Meters using ray tracing software. It expands on the brief discussion in the ARRL Handbooks. The Earth's magnetic field affects 630-Meter and 2200-Meter band propagation. Lower ionization reduces absorption, aiding low-frequency propagation. Differences exist between bands, limited daytime sky-wave propagation. Sunrise/sunset show promise, yet mechanisms are unclear. Ducting possible at night in specific conditions. Negative ions enhance propagation. Inefficient antennas and high man-made noise are anticipated. Groundwave propagation is significant on 2200-Meters.
    [ Hits: 36 | Votes: 1 | Rating: 10 ]
Technical Reference : Homebrew
  • HAM Radio DIY Projects by DL8ABH - Ham Radio DIY projects all around morse semi-automatic and fully automatic bug keys construction manuals o semi-and fully automatic Bug keys, portable light weight magnetic loops, making a telegraph set (school project) and lots of kitchen projects (useful hamradio gear made by easily available material)
    [ Hits: 150 | Votes: 0 | Rating: 0 ]

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