s match

s match

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• 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: 3941 | Votes: 15 | Rating: 6.46 ]

• 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: 2474 | Votes: 25 | Rating: 5.84 ]

• 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: 591 | Votes: 1 | Rating: 6 ]

• 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: 1507 | Votes: 2 | Rating: 4.5 ]

• 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: 2259 | Votes: 5 | Rating: 5.2 ]

• EFHW matching unit - End-Fed Half Wave matching unit project, based on a FT140-43 with SWR plot tests made using capacitor and without.
  [ Hits: 903 | Votes: 2 | Rating: 10 ]

• 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: 3607 | Votes: 3 | Rating: 9.33 ]

• The Basics of Patch Antennas - This article explores the basic concepts of patch antennas. Topics include principles of operation, impedance matching, radiation pattern, circular polarization, bandwidth, efficiency, alternative feed types, stacked patches and higher mode behavior.
  [ Hits: 804 | Votes: 1 | Rating: 9 ]

• 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: 957 | 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: 1657 | Votes: 0 | Rating: 0 ]

• 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: 2313 | 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: 1800 | Votes: 0 | Rating: 0 ]

• 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: 1025 | Votes: 3 | Rating: 4 ]

• 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: 474 | Votes: 2 | Rating: 9 ]

• Impedance Matching Network Designer - An online multiple calculator of 16 impedance matching networks
  [ Hits: 378 | Votes: 3 | Rating: 7.33 ]
• Air cored inductor calculator - Online calculator for Input coil data, LC Resonant Frequency and L match
  [ Hits: 474 | Votes: 2 | Rating: 1 ]

• 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: 290 | Votes: 1 | Rating: 8 ]

• 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 ]

• TVI filters - Examples of absorbtive low-pass filters in which the unwanted high-frequency energy is separated from the wanted output and then dissipated in matched resistors
  [ Hits: 356 | Votes: 0 | Rating: 0 ]

• SARK-100 Pc Scan - A windows program that scans the SARK-100 and plot the SWR Vs frequency. The data can also be stored as an Excel file. The min and max match frequency is calculated. Donationware
  [ Hits: 1904 | Votes: 3 | Rating: 8 ]

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