l match
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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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- 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 ]
- Impedance Matching Network Designer
- An online multiple calculator of 16 impedance matching networks
[ Hits: 377 | Votes: 3 | Rating: 7.33 ]
- Air cored inductor calculator
- Online calculator for Input coil data, LC Resonant Frequency and L match
[ Hits: 473 | 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: 289 | 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 ]
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