project design

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project design

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Antennas : 80M
  • 80m Vertical Antenna with Folded CounterPoise - A very efficient 80 meter Counterpoise antenna designed to reduce ground losses from inadequate radial systems beneath inverted L antennas, a project by DM2GM and DM4IM based on the original K2AV antenna concept.
    [ Hits: 1088 | Votes: 2 | Rating: 7 ]
Antennas : Fan Dipole
  • Multiband Dipole - Interesting article on multiband fan dipoles. This article give an overview on designing this wire antenna, and planning a robust installation and proper feed line. Includes notes on setting up a commercial fan dipole antenna and on how diy your own.
    [ Hits: 1380 | Votes: 4 | Rating: 6.75 ]
Antennas : J-Pole
  • Tri-Band J-Pole - This strange looking antenna is a combination of Coupled-Resonator principle by K9AY and a quarter stubs to achieve low angle radiation pattern. Designed with 4nec2 NEC based antenna modeler and optimizer for 145/220/440MHz bands
    [ Hits: 1913 | Votes: 5 | Rating: 9 ]
Antennas : Magnetic Loop
  • Magnetic Loop Antenna Project - River City Amateur Radio Communications Society magnetic loop antenna project, design an capacitor homebrewing
    [ Hits: 914 | Votes: 2 | Rating: 2.5 ]
Antennas : Quad
  • 2 Meter 5 Element Quad - A five element quad antenna for 144 MHz DIY Project. This 2 Meter 5 Element Quad antenna was modeled using EZNEC, with a boom from a UHF TV antenna and CPVC pipe for spreaders. Constructed for 146MHz, it exhibits a gain of 10.7dB and an impedance of 75 ohms. Real-world results surpass the HT antenna, reaching over 20 repeaters up to 75 miles away. The design, costing around $10, employs simple tools for assembly.
    [ Hits: 1884 | Votes: 9 | Rating: 6.23 ]
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: 923 | Votes: 0 | Rating: 0 ]
Antennas : Vertical
  • Fishing Rod Vertical - A homebrew fishing-rod vertical using a very nice design from EB5EKT. This antenna works 20, 30, and 40M bands by selecting the tap points using alligator clips
    [ Hits: 2644 | Votes: 4 | Rating: 7.25 ]
Antennas : WiFi
  • Coffee Can WiFi Antenna - This wi-fi antenna design is a much simpler DIY project than the pringles cantenna. Basically there are 3 parts to a build-your-own 2.4 Ghz cantenna kit: a pigtail, an N-female connector and a metal coffee can.
    [ Hits: 1299 | Votes: 1 | Rating: 1 ]
  • WiFi Helical Antenna Design - DIY a Wi-FI Helical Antenna for better performances, a project by PA0HOO i Dutch end English
    [ Hits: 1454 | Votes: 4 | Rating: 4.5 ]
Software : Linux
  • CuteSDR - CuteSDR Open-Source application for MacOSX , Linux, and Windows designed to run with RFSPace SDR receiver
    [ Hits: 4838 | Votes: 3 | Rating: 6.67 ]
Software : Weak Signal
  • JS8Call - Js8Call is communication software designed for keyboard-to-keyboard message passing. Based on the WSJT-X application and implementing the FT8 protocol techniques, it's a separate project run on Linux, Windows and MacOS
    [ Hits: 948 | Votes: 3 | Rating: 10 ]
Technical Reference : ATV
  • 2.3GHz ATV TX - Ian G6TVJ design for a synthesised ATV transmitter covering the 13cm band and beyond up to about 2.6 GHz.
    [ Hits: 580 | Votes: 2 | Rating: 7 ]
Technical Reference : Amplifiers : HF Amplifiers
  • 3-500Z Amplifier Project - This article loaded with nice pictures and schematics, describes a 160-10 meter linear amplifier that uses a pair of 3-500Z triode power tubes. It was designed and constructed by William Moneysmith, W4NFR. The amplifier features fast warm up and 1500-Watt RF output with 100-Watts of drive.
    [ Hits: 1081 | Votes: 4 | Rating: 9.5 ]
Technical Reference : Arduino
  • RF PWR and SWR Meter with Arduino - This sketch will read RF power and SWR from any SWR bridge, designed to work on VHF UHF bands
    [ Hits: 10626 | Votes: 34 | Rating: 6.97 ]
Technical Reference : Audio Technical Reference : QRP Projects
  • HF1 QRP Transceiver Project - This project is based around the recent HF1 QRP transceiver by Ashhar Farhan, VU2ESE. The transceiver is an interesting SSB design with wide tuning range from 0-30MHz and should cover several amateur bands. The schematic for the transceiver can be found on the Minima mail list in this post with a PDF attachment
    [ Hits: 670 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Direction Finding
  • Montreal Fox Controller - Fox Controller, designed by VE2JX and VE2EMM includes schematic diagram to build the transmitter.
    [ Hits: 308 | Votes: 0 | Rating: 0 ]
Technical Reference : Repeater
  • VHF UHF cross band repeater - Pictures and project design of a crossband VHF UHF repeater by LY3H
    [ Hits: 812 | Votes: 1 | Rating: 4 ]
Technical Reference : Vector Network Analyzer
  • VK5JST Aerial Analyzer - This project was published in the May 2005 issue of the Australian magazine Amateur Radio, and has been designed using parts which are very readily available
    [ Hits: 1120 | Votes: 3 | Rating: 10 ]

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