auto tuner

auto tuner

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• Automatic Magnetic Antenna Tuner - A Magnetic Loop Antenna is a resonant circuit employing a large inductor and adjustable capacitor. Efficiency depends on the inductor's size relative to wavelength. A Magnetic Loop Controller adjusts antenna tuning in real-time, syncing with Transceiver VFO movements. It communicates with various radios, enabling seamless tuning. Stepper motor resolution ensures accurate capacitor positioning, crucial for antenna performance. The Controller's firmware offers diverse functionality, enhancing user experience and antenna efficiency.
  [ Hits: 60 | Votes: 0 | Rating: 0 ]

• An Automatic Antenna Tuner - An homemade antenna tuner project that should be small, easy to build and cheap. This automatic antenna tuner can work as locale or as remote. The tuner has EEPROM memory for store settings for faster tunning and four interfaces
  [ Hits: 493 | Votes: 3 | Rating: 9 ]
• Semi-automatic antenna tuner project - Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands)
  [ Hits: 291 | Votes: 0 | Rating: 0 ]
• ICOM Tuner Connector - Many Icom radios e.g.7100 have a connector for automatic tuners such as the Icom AH4. The cable supplied by Icom is of a fixed length 10m and is not shielded. Icom recommends to use shielded cable for any length greater than 10m.
  [ Hits: 232 | Votes: 1 | Rating: 10 ]

• The UnTenna - Multiband random wire unun (unbalanced to unbalanced) for use with rigs with builtin autotuners.
  [ Hits: 237 | Votes: 0 | Rating: 0 ]
• The Squid Pole Wire Antenna Re-visited - The author explores enhancing the performance of a 7-meter fiberglass squid pole wire antenna for amateur radio. The wire, resonant at 10MHz, poses impedance challenges on various bands. Experimenting with direct coax feed and UN-UN transformers, the LDG Z11-Pro2 auto-tuner is found effective but may show deceptive SWR readings. The author employs adjustable UN-UN ratios and introduces a custom "porcupine" coil to optimize the antenna's efficiency.
  [ Hits: 91 | Votes: 0 | Rating: 0 ]

• HA8DU Antenna Tuners - HA8DU European manufacturer of quality amateur radio antenna tuners for HF Bands, from 10 meter to 160 meters band. Products includes manual and automatic antenna tuners, power handling till 3.5 KW. HA8DU produce even custom made variable capacitors and rotary switches.
  [ Hits: 399 | Votes: 4 | Rating: 7.5 ]

• LDG Z100 Autotuner - Review of the LDG autotuner model Z100 a simple to use and operate amateur radio antenna tuner
  [ Hits: 373 | Votes: 1 | Rating: 10 ]

• AutoCap Tuner for mag loop Antennas - This article describes a loop tuning system that automatically keeps a contest-band loops properly adjusted as operator hop around each band, made with Arduino
  [ Hits: 896 | Votes: 2 | Rating: 6 ]
• Arduino Antenna Tuner - Arduino-based Automatic Amateur Radio Antenna Tuner
  [ Hits: 301 | Votes: 3 | Rating: 9 ]
• 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: 569 | 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: 116 | Votes: 0 | Rating: 0 ]

• Yaesu FT-891 Go-Box for POTA - This article documents the author's latest go-box build for outdoor ham radio operations using a Yaesu FT-891 transceiver. The go-box is constructed from a plastic "50-cal ammo case" and contains various components, including the transceiver, LDG Z11 Pro autotuner, DIY Yaesu FH-2 remote control keypad, and an external battery. The author details the design considerations, the mounting of components inside the box, and addresses issues related to ventilation and cable management. The go-box is geared for CW operations and POTA activations, with further modifications planned for a microphone and DATA jack. This project allows for rugged, environmentally protected outdoor radio operations while maintaining portability.
  [ Hits: 196 | Votes: 0 | Rating: 0 ]

• Serial/USB SWR Meter - A low-cost SWR meter project based on Arduino that works with AutoCap automatic antenna tuner for magnetic loop antennas
  [ Hits: 780 | Votes: 2 | Rating: 5.5 ]

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