using a tuner

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using a tuner

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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: 322 | Votes: 2 | Rating: 7.5 ]
Antennas : Feed Lines
  • Antenna Transmatch Tips - Tips on tuning antennas using Antenna Tuning Units also called ATU. This article explains the functions and ills of tuners, along with some guide- lines for building an ATU.
    [ Hits: 3312 | Votes: 5 | Rating: 6.4 ]
Antennas : Loop
  • Quad Loop Antenna for 50 MHz - Building A Full-Wave Quad Loop Antenna for 6 Meters. This is an easy antenna to build and the materials cost about $15-20. It exhibits 1.8dB gain over a 1/2-wave dipole. Using an open-wire parallel feedline (commonly called ladder line) with an antenna tuner, it tunes up on the 10m band as a 5/8-wave loop as well
    [ Hits: 196 | Votes: 1 | Rating: 1 ]
Antennas : Multiband
  • W4JOH Cobra Antenna - The original Cobra antenna, is a multiband 160 or 80 to 10 meter, designed by W4JOH is built using standard insulated wire of about 14 gauge and fed with 450 ohm ladder line down to the shack into a tuner.
    [ Hits: 1709 | Votes: 1 | Rating: 10 ]
  • 160m to 10m Sterba Curtain Antenna - Even if using a tuner this multiband antenna will let you operate from 160 to 10 meters. If you could only put up one antenna, this would be it. Project by N0KHQ.
    [ Hits: 10355 | Votes: 7 | Rating: 6.57 ]
Antennas : Theory : Impedance matching
  • T Match efficiency estimator - This calculator estimates the efficiency of a T match tuner using a simple loss model.
    [ Hits: 583 | Votes: 1 | Rating: 4 ]
Antennas : Tuners
  • Do You Need an Antenna Tuner - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
    [ Hits: 22945 | Votes: 12 | Rating: 4.58 ]
  • A remote antenna tuner - Interesting project to remotely control, using a servo control circuit, a common commercial antenna tuner by N30X
    [ Hits: 11745 | Votes: 6 | Rating: 7.33 ]
  • The EZ-Tuner - The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.
    [ Hits: 5567 | Votes: 1 | Rating: 9 ]
  • Using Auto-Tuners - General advice regarding auto-tuners and their use by G8JNJ
    [ Hits: 1440 | Votes: 0 | Rating: 0 ]
  • QRP Z-Match Tuner 40-10m - The Z Match is really a basic L Match consisting of a series capcitor and variable shunt inductor, coupled to the antenna using the RF transformer action.
    [ Hits: 1797 | Votes: 0 | Rating: 0 ]
  • A Versatile SOTA Antenna Tuner - This is a detailed, technical piece, intended mostly for makers and more creative activators, who enjoy building and using their own tools on the summits. A multiband portable antenna tuner supporting 10W, small and light, suitable for SOTA operations
    [ Hits: 262 | Votes: 2 | Rating: 10 ]
Antennas : Vertical
  • IK-STIC 2 vertical multiband antenna - The IK-STIC 2 is a vertical, all band, antenna that is over 25 feet tall yet weighs under 5 pounds. Based on a telescopic pipe or a fiberglass fishing pole, using a tuner it can easily cover the amateur radio HF bands from 40 - 10 Meters
    [ Hits: 4845 | Votes: 6 | Rating: 5.17 ]
  • Multiband HF Vertfical Antenna - A vertical antenna that can cover HF bands using an UN UN and a fishing pole, usage of tuner is requested.
    [ Hits: 1690 | Votes: 1 | Rating: 10 ]
Operating Modes : JT65
  • Receiving JT65 with RTL-SDR - How to receive JT-65 signals using a cheap RTL-SDR dongle with the 820T2 tuner chip
    [ Hits: 832 | Votes: 1 | Rating: 7 ]
Radio Equipment : HF Transceivers : Icom IC-7000 Software : Browser extensions
  • Radio Receiver for Chrome - Receive and listen to FM and AM radio broadcasts on your browser or ChromeBook using an RTL2832U-based USB digital TV tuner.
    [ Hits: 750 | Votes: 1 | Rating: 1 ]
Technical Reference : Arduino
  • Automatic HF Antenna Tuner with Arduino - Make and automatic antenna tuner based on Arduino and using economic card. This ATU Project can be installed outdoors and controlled remotely by an rs485 link
    [ Hits: 563 | Votes: 3 | Rating: 9.67 ]
  • WIFI Remote FUCHS ATU for EndFed Antenna - The Fuchs Antenna tuner with a resonant circuit as a coupler. The Fuch Antenna Tuner is providing a high-efficiency compare to a 49:1 transformer using ferrite . The Fuchs tuner is a resonating L/C circuit to step-up the impedance from 50 Ohm to the required 3k. The ATU is able to perform automatic tuning with the addition of a tiny Aduino Nano and a SWR bridge.
    [ Hits: 114 | Votes: 0 | Rating: 0 ]
Technical Reference : Raspberry Pi
  • Raspberry Pi SDR Receiver - Get started with SDR using a Raspberry Pi and inexpensive RTL-SDR tuner.
    [ Hits: 4417 | Votes: 7 | Rating: 7.28 ]

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