l match

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l match

228 links

Antennas : 40M : 40 meter Delta Loop Antennas
  • Short Delta Loop for 40m - A youtube video of a Short Delta Loop antenna, only 8,5 meters per side. This project use a loading coil of 56,7 uH for electrical matching.
    [ Hits: 3925 | Votes: 15 | Rating: 6.46 ]
Antennas : 80M
  • Portable Vertical Antenna for 40 and 75 - Portable Vertical Antenna for 75m and 40m featuring Low radiation angle for DX, easy to install and to match 50 ohms
    [ Hits: 3930 | Votes: 7 | Rating: 7.14 ]
Antennas : Baluns
  • 1:49 Transformer - This 1:49 transformer is used with wires any multiple of 1/2 wavelength. This is not a matching network, it's a wideband transformer and it has some advantages compared to LC matching
    [ Hits: 2471 | Votes: 25 | Rating: 5.84 ]
Antennas : Delta loop
  • 2 Elements 20m Delta Loop - A 2 elements delta loop antenna for 14 MHz with a MMana simulation file, dimensions, pictures of this aluminium tube based delta loop antenna, and matching system details.
    [ Hits: 588 | Votes: 1 | Rating: 6 ]
Antennas : Dipole
  • QRO No-Tuner Multiband Dipole - Construction details of a multiband dipole that can can operate at high power levels, and match its 50-ohm coax feedline without a tuner
    [ Hits: 1503 | Votes: 2 | Rating: 4.5 ]
Antennas : End-Fed
  • End Fed Long Wire Antenna - The antenna is an inexpensive, multiband, end fed HF antenna. It has a matching network consisting of a toroid core and an antenna lead of 30
    [ Hits: 2254 | Votes: 5 | Rating: 5.2 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • Yet Another EFHW Matcher - An end-fed-half-wave antenna matcher project based on a FT-82-43 core with a 100 pF and 45 pF capacitor in parallel
    [ Hits: 696 | Votes: 3 | Rating: 9 ]
Antennas : Multiband
  • 5 Band Telescopic Vertical Antenna - 5 Band 1/4 wave Telescopic Antenna. The 20m to 10m, antenna is simple and cheap to make, and has a performance that matches commercial antennas but at cost considerably lower. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car.
    [ Hits: 3601 | Votes: 3 | Rating: 9.33 ]
Antennas : Quad
  • WX9DX Quad Antenna - A two meter Quad antenna project with detailed instructions on how to adjust the Quad gamma match
    [ Hits: 1152 | Votes: 6 | Rating: 4.17 ]
Antennas : Theory : Impedance matching
  • The Gamma Match - The gamma match was originally invented as a means of feeding vertical monopole antennas for medium wave broadcasts, which were earthed at the base for lightning protection- Hams are more likely to use a gamma match to feed a dipole or loop element, but the basic theory is easier to understand for the case of a quarter wave monopole.
    [ Hits: 954 | Votes: 2 | Rating: 4.5 ]
  • An Examination of the Gamma Match - A Working analysis of the gamma match problem that gives useful practical results in a article dated April 1969.
    [ Hits: 1655 | Votes: 0 | Rating: 0 ]
Antennas : Tuners
  • Z-Match Antenna Tuner - A 100-watt Compact Z-Match Antenna Tuner that can match just about anything on all HF bands, and only uses two control
    [ Hits: 2306 | Votes: 2 | Rating: 5.5 ]
  • QRP Z-Match Tuner 40-10m - The Z Match is really a basic L Match consisting of a series capcitor and variable shunt inductor, coupled to the antenna using the RF transformer action.
    [ Hits: 1799 | Votes: 0 | Rating: 0 ]
Antennas : ZS6BKW
  • Some Useful ZS6BKW Modifications - The ZS6BKW antenna evolved from an optimization of the G5RV antenna. The SWR on 80m is too high and the 40 ft ladder line matching section is a little too long on 17m and a little too short on 10m
    [ Hits: 1018 | Votes: 3 | Rating: 4 ]
Manufacturers : Antenna Switches
  • NMF Technology - Amateur radio antenna accesories manufacturer, produces four square antenna combiner, antenna controllers, antenna stack match and antenna switches
    [ Hits: 153 | Votes: 2 | Rating: 10 ]
Software : Android : DX Cluster
  • DX Alert - You can set up DX Cluster alerts and let the DX Alert server monitor the cluster for you. So your device is not directly connected to the DX Cluster. When a spot that matches an alarm is seen a notification appears on your android device.
    [ Hits: 472 | Votes: 2 | Rating: 9 ]
Technical Reference : Calculators Technical Reference : Coax Cables and Connectors
  • UHF Connector Performances - A deep analysis of UHF connectors performance tests, including return Loss of UHF Connectors, Mismatch Loss of UHF Connectors, SWR of UHF Connectors
    [ Hits: 289 | Votes: 1 | Rating: 8 ]
Technical Reference : Radio Frequency Interference
  • The myth of SWR causing coax radiation - There are several reasons that can cause coax line radiation, most of them are related to wrong or missing use of a balun, but none can be imputed to load mismatch.
    [ Hits: 752 | Votes: 2 | Rating: 6 ]

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