no tuner antenna
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Antennas : Fan Dipole- Fan Dipole
- The Fan dipole antenna offer a easy to setup and efficient HF multiband antenna that does not require tuners or antenna switches, diagram by YC8PVU.
[ Hits: 2745 | Votes: 6 | Rating: 5.83 ]
- RF Choke with Bifilar Windings
- This article presents an RF Choke featuring an 11-bifilar turn winding of #14 house wire on a Fair-rite FT240-31 toroid. The choke is enclosed in a 3D-printed case from Thingiverse, though this may pose thermal concerns at higher power levels. With SWR concerns up to 30MHz, the author plans to employ two series chokes at the rig input for improved performance. This choke offers versatility for portable use, with potential mismatch resolution using an antenna tuner. Further testing is anticipated upon the arrival of new cables.
[ Hits: 85 | Votes: 0 | Rating: 0 ]
- Homebrew an OCF Off-Center Fed Dipole Antenna
- This type of antenna is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It’s a dipole fed off center with a 4:1 balun at the offset feed point. The antenna shown covers 80, 40, 20 and 10 meters. The formula can also be used to adjust the overall length to cover more or fewer bands and the resulting overall length. 160-10m, 80-10m or 40-10 meters depending on your available space. Other bands will require a tuner.
[ Hits: 194 | Votes: 3 | Rating: 6.67 ]
- Notes on Portable HF Antennas
- Notes on an optimum Portable HF Antenna, a comparison of MFJ927 and SGC239 autotuners, and a 31 ft. vs 43 ft. vertical by VE1ZAC
[ Hits: 452 | Votes: 1 | Rating: 10 ]
- Z-Match Tuner Explained
- Most people are not familiar with antenna tuners and what a antenna tuner actually does.
[ Hits: 998 | Votes: 2 | Rating: 4 ]
- QRP Z Match Antenna Tuner Project
- A Home made antenna tuner for QRP transceivers. This small tuner is the ideal for portable operations with random length wires or whenever you have not a resonant antenna.
[ Hits: 107 | Votes: 1 | Rating: 10 ]
- G8JNJ Broadband HF Vertical Antenna
- Broadband HF Vertical antenna which does not require a tuner, and which is capable of providing reasonable performance on all bands from 7MHz to 28MHz
[ Hits: 1449 | Votes: 1 | Rating: 10 ]
- OZ1CX - Multiband vertical antenna no tuner LC matched
- A 4-Band vertical antenna that needs NO tuner, NO traps. Implement an LC matched on 4 bands with relay switching.
[ Hits: 1004 | Votes: 1 | Rating: 8 ]
- Homemade Carolina Windom antenna
- An off centre fed dipole, with 10 feet of vertical radiator. It needs no tuner on 40m, 20m and 10m by M0UKD
[ Hits: 1303 | Votes: 1 | Rating: 1 ]
- Long Wire Antenna for portable operations
- With the view to establish a quick and easy multi-band antenna deployment for portable and camping operations a simple long wire antenna with an earth or earth plus counterpoise arrangement with a 9:1 voltage unun including a tuner or simply with a tuner is one possible solution. With the 9:1 voltage unun and wire lengths suggested in the below tables the antenna should present non extreme impedances for all HF amateur band frequencies. This page is far from complete and represents the ongoing investigation into this type of antenna. Experiments to date seem to have raised more questions than obvious answers.
[ Hits: 796 | Votes: 13 | Rating: 8.69 ]
- Antennas for QRP Operation
- Antennas for low-power operation resemble those for 100W use. Minor adjustments, like capacitor voltage ratings, may apply, but basic principles persist. Portable antennas, notably Backpack Antennas for weight-conscious setups, hold relevance beyond QRP. While some antennas function acceptably at higher power, efficiency issues arise at QRP levels. Testing antennas at 100W exposes weaknesses, particularly in tuners, crucial for efficient QRP operation.
[ Hits: 58 | Votes: 0 | Rating: 0 ]
- Arduino MFJ tuner control
- An Arduino uno based project to control an MFJ 998 antenna tuner via Icom CI-V interface by VE1ZAC
[ Hits: 822 | Votes: 0 | Rating: 0 ]
- Arduino automatic antenna tuner
- Controlling an antenna tuner with an arduino board. The project includes movies, explanation and the arduino code
[ Hits: 5779 | Votes: 11 | Rating: 7.76 ]
- 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: 894 | Votes: 2 | Rating: 6 ]
- Arduino Antenna Tuner
- Arduino-based Automatic Amateur Radio Antenna Tuner
[ Hits: 298 | 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: 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 ]
- 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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