9 simple j

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9 simple j

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Antennas : 2M
  • 9 element yagi for 2 meters band  updated  pop - A simple design of a 9 elem. yagi antenna for 2 meters band
    [ Hits: 52918 | Votes: 259 | Rating: 5.23 ]
  • VHF Coax Dipole - A simple coax dipole antenna for 144 MHz by 9A7PJT
    [ Hits: 1254 | Votes: 2 | Rating: 2 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Portable Dipole Antenna for 7 MHz - A simple portable dipole antenna for the 40 meter band using a total lenght of 18 meter. It can be used for 80 to 10 meters coverage using a antenna tuner.
    [ Hits: 294 | Votes: 2 | Rating: 7.5 ]
Antennas : 80M
  • 80M Vertical antenna with capacitance hat - Simple wire antenna cheap to make, using readily available materials, Low angle radiation, with rejection of high angle signals Wide bandwidth, with resonance at the 80M DX window (3.790-3.800 MHz); and Maximum height is 40 feet
    [ Hits: 24920 | Votes: 23 | Rating: 7.05 ]
Antennas : Baluns
  • The 9:1 balun  pop - Homemade 9:1 antenna balun simple project
    [ Hits: 33193 | Votes: 36 | Rating: 6.16 ]
Antennas : Feed Lines
  • 70 cm Power splitter - A simple accurate power splitter for the 70cm uplink to Oscar 13
    [ Hits: 1782 | Votes: 2 | Rating: 1 ]
Antennas : Helical
  • Helix Antenna for 7 MHz - From his simple ham radio antennas series, KH6JRM describe an interesting short vertical helix antenna for th 40 meters band
    [ Hits: 1629 | Votes: 2 | Rating: 2.5 ]
Antennas : J-Pole
  • HF J-Pole antenna - A Simple Nondirectional Antenna for Ten Meters QST February 1950, Easy to build J-Pole antenna for restricted space.
    [ Hits: 6536 | Votes: 3 | Rating: 3 ]
Antennas : VHF UHF
  • PL259 Antenna - A simple VHF quarter wave antenna from PL25
    [ Hits: 529 | Votes: 2 | Rating: 9 ]
Antennas : Vertical
  • 9 band vertical HF antenna by RW3XA  pop - Simple vertical radiator with matching box. No traps, no tuner required for this multiband antenna
    [ Hits: 38464 | Votes: 43 | Rating: 7.34 ]
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: 1274 | Votes: 1 | Rating: 1 ]
Ham Radio : Blogs : Europe : UK Software : Antenna analysis
  • Yagi Modeler Applet - This java applet/application implements a simple yagi modeling code. The initial input is a really trivial 2 elmenent yagi.
    [ Hits: 2882 | Votes: 29 | Rating: 6.07 ]
Software : Radio Programming
  • CI-V Test - CI-V Test for Win98 (others not tested, but should work) is a simple freeware program to display received CI-V messages in Hex and text, and send commands for test purposes to the rig. This program is not intended to convienently control your rig, just explore the functions of CI-V.
    [ Hits: 2279 | Votes: 6 | Rating: 8.67 ]
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: 994 | Votes: 6 | Rating: 3.67 ]
Technical Reference : Dummy Loads
  • Cheap and simple HF dummy load - This is the report of a MFJ-259B analysis of two 100 ohm / 5 watts resistors in parallel partially in italian
    [ Hits: 2073 | Votes: 4 | Rating: 6 ]
Technical Reference : Pan Adapter
  • TS-590S Pan Adapter Cable - This article describes how to make a simple receiver Out adapter cable for the Kenwood TS-590S, so a second receiver can be connected and used as a pan-adapter
    [ Hits: 1381 | Votes: 1 | Rating: 1 ]
Technical Reference : Radio Direction Finding
  • Active Attenuator - This active attenuator works as a simple mixer. A signal from a 1 MHz oscillator is mixed with the received signal in a 1N914 diode.
    [ Hits: 272 | Votes: 1 | Rating: 6 ]
Technical Reference : Test Equipment : Oscilloscope
  • Ultra-Simple Oscilloscope - This homemade tube oscilloscope is based on the WaterMan Pocket-Scope 0510A, a 3 tube oscilloscope made in 1946.
    [ Hits: 1470 | Votes: 3 | Rating: 9.67 ]
Technical Reference : Test Equipment : RF Probe

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