9 simple j

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9 simple j

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Antennas : 160M
  • 160 meter antenna problems and solutions - The quarter-wave Marconi working against ground is a popular and inexpensive antenna for 160 meters. A lot of newcomers to the band favor this simple antenna because it's easy to put up, it isn't too big, and it works.
    [ Hits: 82 | Votes: 0 | Rating: 0 ]
Antennas : 20M : 20 meter Dipole Antennas
  • Vertical Dipole Antenna for 14 MHz by G3PND - An home made vertical dipole antenna made with simple material. The antenna has a total length of aproximately 16 feet. In this article appeared on June QST 2019, the author explain how he reached the optimal confirugation changing and adjusting the lower part of the antenna, trimming and spacing correctly the copper wire. PDF File to downloas
    [ Hits: 1085 | Votes: 1 | Rating: 2 ]
Antennas : 23cm
  • 43 Elements Yagi Antenna for 23cm band - An interesting presetnation full of usefull tricks to correctly design and build 23 cm Yagi using simple tools. The basic design of the antenna presented in this document is taken from the original DL6WU Yagi Design published in 1982
    [ Hits: 257 | Votes: 1 | Rating: 8 ]
Antennas : 6M
  • Six Meter Quad Turnstile Antenna - Simple 6 Metre DX Antenna based on an article by LB Cebick in QST May 2002 on a Quad Turnstile antenna. This antenna is basically two full wave loops mounted at right angles fed 90 degrees out of phase to produce an omni-directional horizontally polarized pattern
    [ Hits: 669 | Votes: 2 | Rating: 9.5 ]
Antennas : Dipole Antennas : Magnetic Loop
  • Magnetic Loop 600 KHz-4MHz  new - The antenna is built on a cross-shaped frame with spar width (and height) of 48 inches, providing a height of 52 inches and a width of 49 inches. This antenna costs only about $45 to construct and can be built in just a few hours using simple hand tools. The best part is that the performance on 160M and 80M is excellent
    [ Hits: 66 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • ZR6KMD 20m Field Dipole - A simple drawing schematic of a portable field dipole for 14 MHz with dimensions in meters and instruction for setting up the antenna and to store the radial for easy transportation
    [ Hits: 406 | Votes: 3 | Rating: 7.33 ]
Operating Modes : Mobile : Bicycle
  • The UHF Bicycle Antenna - Homebrewing a UHF antenna to be used on a bicycle. This simple project gives you the right hints on how to build and setup and install a 70cm antenna on a bicycle.
    [ Hits: 163 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Kenwood TS-590S
  • TS-590S audio noise - With high impedance earphones plugged into the audio jack on the Kenwood TS-590S or TS-590SG, you can hear a really annoying noise even with the AF volume set to zero. A simple quick-and-dirty solution is a resistor in series to the audio output.
    [ Hits: 123 | Votes: 1 | Rating: 9 ]
Software : Radio Programming
  • Yaesu FT-817 FT-857 FT-897 EEPROM analyzer - A Java multiplatform application used to find EEPROM locations for different radio settings. a very simple to use multi-platform Java application which can be used to find EEPROM locations for different transceiver settings. This information can then be used to send the right CAT commands to configure the radio remotely. Use this application on your own risk.
    [ Hits: 240 | Votes: 1 | Rating: 10 ]
Technical Reference : Arduino
  • ARDUINO Simplex Repeater Controller - This project hereby presented is a complete HAM radio simplex 'smart' repeater, built around a Motorola GM-350/950, Arduino NANO board and a WINBOND audio recording integrated circuit
    [ Hits: 1013 | Votes: 6 | Rating: 3.67 ]
Technical Reference : Software Defined Radio : Beginner's Guides to SDR
  • SDR Receiver with RTL-SDR and Gnu Radio - This project is a Software Defined Radio Receiver. It has a frequency range of 24MHz 1.2GHz. It can demodulate AM, FM, USB, LSB with selectable bandwidths of 600, 2400, 2800, 3200 and 6400Hz. Using a simple RTL-SDR Dongle and Raspberry Pi 3 computer using GNU RADIO
    [ Hits: 328 | Votes: 0 | Rating: 0 ]

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