z match

z match

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• 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 ]

• Cross-Yagi 10el Antenna for 70cm - 10 Elements Cross-Yagi Antenna for 433 MHz. The base of the 10el antenna is the recalculated RA6FOO antenna.Circular polarization is realized - by a phasing quarter-wave line, matching of horizontal and vertical polarization antennas
  [ Hits: 176 | Votes: 6 | Rating: 8.83 ]

• Antenna too short! Inductivity matching with coil match. - Wire antenna calculator with inductivity matching coil where length shorter lambda/4
  [ Hits: 132 | Votes: 0 | Rating: 0 ]

• The Story of the Broadband Dipole - A dipole can be broadbanded by a number of techniques including by matching with resonant sections of transmission feed lines.
  [ Hits: 410 | Votes: 0 | Rating: 0 ]

• To transform ot not to transform - Feed Lines - Transmission lines have many uses other than simply transferring RF power from one point to another. Impedance matching, baluns and filters are probable the most common of these.
  [ Hits: 137 | Votes: 0 | Rating: 0 ]

• 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: 139 | Votes: 2 | Rating: 10 ]

• Satellite Yagi crossed 2m, 70cm - Construction of an antenna for experimental satellite communication, 8el. (435 Mhz) x 4el. (145 Mhz) Satellite Yagi crossed. No difficulty to built this antenna. Except the gamma match. that requires a little more attention
  [ Hits: 148 | Votes: 0 | Rating: 0 ]

• Stacking, Phasing and Matching Yagi Antennas - This is a synopsis of a talk presented to the Sydney VHF DX GROUP by VK2ZAB on how, when and why is convenient to build a Yagi antenna stack.
  [ Hits: 240 | Votes: 2 | Rating: 10 ]

• Efficiency of the Z Match - Various configurations of the Z Match Tuner are tested for power efficiency over a wide range of antenna load conditions
  [ Hits: 968 | Votes: 4 | Rating: 5.5 ]

• Z-match ATU covering 160m - 10m - An home made Z-Match antenna tuner unit that cover all HF bands between 10 and 160 meters
  [ Hits: 1565 | Votes: 3 | Rating: 8 ]
• Z-Match Tuner Explained - Most people are not familiar with antenna tuners and what a antenna tuner actually does.
  [ Hits: 1000 | Votes: 2 | Rating: 4 ]
• Z-Match 100 and mini Z-Match - This is a antenna tuner with wide range tuning for antennas with a Z of + 50 Ohms on all the HF bands.
  [ Hits: 298 | Votes: 0 | Rating: 0 ]
• Z Match with Toroid - A single coil Z-Match. This QRP version by G3WQW, using a T130-2 toroidal inductor and polyvaricon variable capacitors was published in Sprat 84.
  [ Hits: 100 | Votes: 0 | Rating: 0 ]

• OZ1CX - Multiband vertical antenna no tuner LC matched - A 4-Band vertical antenna that needs NO tuner, NO traps. Implement an LC matched on 4 bands with relay switching.
  [ Hits: 1011 | Votes: 1 | Rating: 8 ]

• 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 ]

• RF Impedance Matching Calculator - Calculates the network to match a line to a specific complex load. This online tool calculates the matching network necessary to terminate a line of the specified characteristic impedence Zo in a specific complex load impedence RL + jXL at a specified frequency.
  [ Hits: 194 | Votes: 1 | Rating: 10 ]
• Online Toroid Multi Calculator - This website provide online calculator for several values about a large variety of toroids. Freq/L/C/Z/Turns Calculator, Impedance Matching Network Calculator
  [ Hits: 212 | Votes: 3 | Rating: 5 ]
• Resistor combination finder - If you need a non-standard resistor value you could probably realize a close match using two resistor. If you use two resistor in series it is quite easy to figure out which values give the best match; on the other hand, using a parallel connection it is not so easy (at least for me) to find a good combination. This resistor calculation tool shows which combinations of two resistors (series or parallel) gives a match better than the closest standard value, for the E12 (10%), E24 (5%) and E96 (1%) series.
  [ Hits: 56 | Votes: 1 | Rating: 10 ]

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