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Antennas : 2M Antennas : 6M : 6 meter Yagi Antennas
  • 7 elements 50Mhz Yagi Antenna - A very simple to build, compact 7el 50MHz OWA requiring no complex matching and flat SWR across the bottom of the 6m band
    [ Hits: 412 | Votes: 2 | Rating: 1.00 ]
  • G0KSC 10el 50Mhz OWA Yagi - A huge easy-to-build 6m antenna with huge performance. Easy build, split dipole, no matching required. Super low SWR too.
    [ Hits: 419 | Votes: 1 | Rating: 5.00 ]
Antennas : 70cm
  • 30 el 432MHz LFA Yagi - 30 elements 432MHz LFA Yagi over 44dB F/B and almost 21dBi forward gain. Easy build, no match required.
    [ Hits: 1716 | Votes: 2 | Rating: 9.00 ]
Antennas : Baluns
  • QRO baluns - Construct your own heavy-duty baluns capable of matching your amp's output to various antennas.
    [ Hits: 840 | Votes: 0 | Rating: 0.00 ]
Antennas : End-Fed
  • End-Fed 40-6 - End-Fed 6-40 Meter Multiband HF Antenna and an inexpensive, multiband, end fed HF antenna matchbox that is quick and easy to setup and use
    [ Hits: 1357 | Votes: 2 | Rating: 6.00 ]
  • End-Fed 6-40 M Multiband Antenna - This project produces an inexpensive, multiband, end fed HF antenna matchbox, quick and easy to setup. This project creates a trifilar wound, 9:1 UNUN toroid matching transformer. Handles 100W and need an antenna tuner.
    [ Hits: 1049 | Votes: 2 | Rating: 7.50 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • End Fed Half Wave Antenna for 6 / 40 Meter - 6m to 40m EndFed Half Wave Antenna project produces an inexpensive, multiband, end fed HF antenna matchbox that is quick and easy to setup and use.
    [ Hits: 1709 | Votes: 4 | Rating: 7.25 ]
  • 20m Half-Wave End Fed - A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
    [ Hits: 746 | Votes: 1 | Rating: 10.00 ]
Antennas : Spiral
  • Spiral HF Antenna - A New Twist on Portable Multiband HF Dipoles, a Multi-band Spiral Dipole Off-Center-Feed match (OCF) antenna solution.
    [ Hits: 1421 | Votes: 3 | Rating: 2.33 ]
Antennas : Theory : Impedance matching
  • Matching a 5/8 vertical  updated - The 5/8 vertical it quite popular and matching solutions can vary
    [ Hits: 1236 | Votes: 4 | Rating: 2.25 ]
  • The Clemens Match - About the clemens match system
    [ Hits: 404 | Votes: 1 | Rating: 2.00 ]
Antennas : Tuners
  • Z-Match 100 and mini Z-Match - This is a one for all antenna tuner with wide range tuning on all the HF bands. The tuner is based on a G3WQW design. DIY project by PD7MAA
    [ Hits: 687 | Votes: 0 | Rating: 0.00 ]
Manufacturers : QRP Kits
  • HF Projects Kits - Provide service, quality home construction projects, travel antennas, masts and bases, hf and vhf amplifiers, low pass filters and z-match tuners
    [ Hits: 526 | Votes: 0 | Rating: 0.00 ]
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: 235 | Votes: 2 | Rating: 9.00 ]
Software : Log Analysis
  • ClubLog - Log Inspector - Club log, the popular online logbook service, offer an online general pourpose contacts log analysis including DXCC Charts, QSL Charts, log inspector, and many statistical reports with charts and log matching with other clublog users.
    [ Hits: 167 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Calculators
  • Resistor calculator - This resistor calculation tool shows which combinations of two resistors, series or parallel, gives a match better than the closest standard value.
    [ Hits: 165 | Votes: 0 | Rating: 0.00 ]
Technical Reference : QRP Projects
  • QRP Z-Match - Small QRP Z-match project for max 10 W output by DL2LTO
    [ Hits: 1010 | Votes: 2 | Rating: 9.50 ]
Technical Reference : TVI Filters
  • 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: 196 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Vector Network Analyzer
  • 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: 731 | Votes: 1 | Rating: 10.00 ]
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