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current meter

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Antennas : 40M

  • W1ZY 40 meter moxon antenna - W1ZY's 40 Meter MOXON is the product of 9 months of experimentation. The final array is reversible and constructed from No. 12 insulated wire fed through two RF current baluns
    [ Hits: 3341 | Votes: 2 | Rating: 6 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 2 element Yagi for 50 MHz - This 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents.
    [ Hits: 532 | Votes: 3 | Rating: 3 ]
Antennas : Feed Lines
  • Antenna current meter - How to measure antenna feed balanced lines currents
    [ Hits: 756 | Votes: 3 | Rating: 8.67 ]
Antennas : J-Pole
  • 6 m JPole Antenna - Based on original G2BCX design this J-Pole antenna for the six meter band is made with a homemade ribbon cable. The antenna shown in this article includes a coaxial cable choke feed to remove RF currents from flowing on the outer of the cable.
    [ Hits: 1766 | Votes: 6 | Rating: 6 ]
Antennas : OCF
  • OCF Dipole - This is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It is a dipole fed off center with a 4:1 current balun at the offset feedpoint. The antenna shown covers 80, 40, 20 and 10 meters with 15 meters and WARC bands
    [ Hits: 2558 | Votes: 7 | Rating: 9.43 ]
Antennas : Theory
  • A Modern Thermocouple Ammeter - Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF
    [ Hits: 2870 | Votes: 2 | Rating: 6 ]
Antennas : Windom
  • OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
    [ Hits: 20372 | Votes: 36 | Rating: 8.11 ]
Antennas : Wire
  • Lazy H Array Antenna for 40 meter - Make them simple then Make them work. The LAZY H antenna is a general type of antenna that is in the curtain array family. By placing two 1 wavelength dipoles in a plane that is at right angles to the direction of maximum radiation and keeping the proper in-phase current condition to each element, you can achieve a high gain bi-directional antenna.
    [ Hits: 284 | Votes: 3 | Rating: 5.33 ]
Ham Radio : Clubs : North America : USA : New York
  • Larkfield Amateur Radio Club Inc. - Currently operate 3 repeater locations in Dix Hills, Huntington and Smithtown on 2 Meters, 1.25 Meters & 70 Centimeters.
    [ Hits: 627 | Votes: 1 | Rating: 10 ]
Manufacturers : Radio Direction Finding
  • CUBEX - Quad Antennas by CUBEX, Cubex currently offers Cubical Quad antennas for 2 meters through 40 meters.
    [ Hits: 15450 | Votes: 20 | Rating: 6.71 ]
Propagation : Propagation Forecast
  • Current Space Weather Parameters - Solar Wind Velocity and Auroral Storm Potential the website provides also current magnetic indices like last Kp values and predicted Kp values.
    [ Hits: 59 | Votes: 0 | Rating: 0 ]
Technical Reference : Homebrew
  • Build yourself an RF Ammeter - An Easy way to Monitor RF, AC or DC current with one instrument by W5JGV
    [ Hits: 3618 | Votes: 6 | Rating: 6.33 ]
Technical Reference : Test Equipment
  • AC power meter - Measure the AC current flowing through your appliances
    [ Hits: 471 | Votes: 0 | Rating: 0 ]
  • R.F. Current Meter - This R.F. current meter was developed to assist in measuring line currents in balance feed lines as used in the All Band HF Antenna.
    [ Hits: 625 | Votes: 1 | Rating: 1 ]
  • An adjustable RF Ammeter - Measuring antenna current with and RF Ammeter
    [ Hits: 578 | Votes: 1 | Rating: 10 ]
Technical Reference : Test Equipment : Multimeter
  • How to measure current - An article on how to measure electrical current with a digital multimeter or analogue multimeter.
    [ Hits: 280 | Votes: 0 | Rating: 0 ]
Technical Reference : Test Equipment : Signal Generator
  • Germanium Noise Generator - This generator requires 100volts supply at 5mA. A 0 -5 mA meter inserted at J1 measures the crystal current.
    [ Hits: 368 | Votes: 0 | Rating: 0 ]

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