t matching

t matching

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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 ]

• The Ugly MacGyver 6 meter J-pole Antenna - Essentially, a J-pole is a 1/2 wave resonant antenna connected to a quarter wave matching stub. The feedline is connected at a point on the matching stub that is at the feedline's characteristic impedance. The result is 3/4 of a wavelength on one side and 1/4 wavelength on the other side.
  [ Hits: 202 | Votes: 0 | Rating: 0 ]
• 50MHz / 6m J-pole Antenna by VK4ADC - The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarized antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
  [ Hits: 442 | Votes: 4 | Rating: 6 ]
• J-Pole Antenna for 50 MHz - This J-Pole is mounted on a fishing rod. The radiator L1 is an isolated copper-wire with a length of 281,5 cm while the quarter-wave matching sector L2 is made with 450-Ohm-Wireman-cable
  [ Hits: 223 | Votes: 0 | Rating: 0 ]

• 2 element Yagi for 50 MHz - This 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents.
  [ Hits: 533 | Votes: 3 | Rating: 3 ]

• 80 Meter Shortened Ground Plain Antenna - This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device
  [ Hits: 446 | Votes: 1 | Rating: 5 ]

• Full Wave Loop Antenna Calculator  ^updated - Use this online calculator to determine the length of a full-wave loop antenna from the frequency. Both metric and English units of measurement are supported. Quarter-wave matching section lengths are also calculated.
  [ Hits: 930 | Votes: 7 | Rating: 6.14 ]

• 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 ]
• DIY isolation transformers - Article about isolation transformer construction to perform optimal impedance matching. Winding the FCP isolation transformer, includes interesting table for Winding Turns and Lengths and Core Configurations for T300 T200 T400 toroids
  [ Hits: 317 | Votes: 0 | Rating: 0 ]

• 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 ]

• 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 ]
• 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 ]
• End Fed Antenna with a 1:64 Matching Network - In this experiment the autor is going to explore the use of a 1:64 matching network on the End Fed Long Wire Antenna. Experiment will consist in build a 80-40-20-15-10 meter End Fed Long Wire Antenna with a 1:64 matching network from the documentation available on the internet
  [ Hits: 872 | Votes: 15 | Rating: 6.73 ]

• Popular Matching Networks - What happens in impedance space when the various popular matching networks (antenna tuners) are adjusted
  [ Hits: 275 | 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 ]

• Blue VNA Android App - Blue VNA Android only application to control Bluetooth enabled Antenna analyzers or VNAs (Vector Network Analyzers). Supported devices are the miniVNA, the miniVNA Pro Antenna Analyzers (with or without the matching Extender) and the new miniVNA Tiny
  [ Hits: 218 | Votes: 0 | Rating: 0 ]

• Interactive Smith chart - The interactive Smith chart enables users to navigate their way around a Smith chart, using simple discrete element impedance matching. This page allows users to try using the Smith chart, for education and interest purposes, without installing any software. Try changing the value in the load box to see the location of the impedance on the chart.
  [ Hits: 286 | Votes: 2 | Rating: 9.5 ]

• Impedance Matching Network Designer - An online multiple calculator of 16 impedance matching networks
  [ Hits: 378 | Votes: 3 | Rating: 7.33 ]

• Precision VXO - The Precision VXO (PVXO) and its matching Crystal Test Fixture (CTF) were created to provide a low cost means of evaluating the characteristics of crystals and a means of measuring their series resonant frequency.
  [ Hits: 210 | Votes: 1 | Rating: 1 ]

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