all band hf antenna
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Antennas : Dipole- Speaker Wire Doublet Antenna
- A portable wire antenna for the HF bands, made with a common speaker wire.
In its natural form, the speaker wire acts as parallel feed line coming up to the bottom of the PVC feed point. From there, it's split into two wires, one heading out each side of the PVC tee.
[ Hits: 390 | Votes: 4 | Rating: 9 ]
- Short Monoband Dipole Antennas - KGD Antennas
- The KGD antenna is an option for those with space restrictions. The idea behing this project is to provide a short dipole antenna for HF Bands and to allow operations on HF bands when its not possible to setup large antennas, using these short base loaded dipoles.
[ Hits: 240 | Votes: 0 | Rating: 0 ]
- Small HF Antennas
- Experiments on HF antennas for restricted spaces.
In this article author experiments antennas for 80-10 meters band having just a very small garden and several restrictions. Basic antennas consists of laded multiband dipoles and fan dipole antennas
[ Hits: 1014 | Votes: 19 | Rating: 7.31 ]
- Multiband End-fed 80-10m Antenna
- A multi band antenna for HF band capable to operate from 10 to 80 meters band depending on wire lenght loaded with a small inductance neat the feed end.
[ Hits: 366 | Votes: 2 | Rating: 6.5 ]
- The Fan Dipole A valuable multi-band HF antenna
- The fan dipole antenna as an alternative to the paralled dipole antenna, to achieve a larger bandwidth and a better tuning by decreasing elenment influences.A project based on the W6HDG original concept.
[ Hits: 744 | Votes: 6 | Rating: 6.67 ]
- Exploring The J-Pole Antenna
- The J-Pole antenna is a common omnidirectional antenna used in amateur radio, particularly on the VHF and UHF bands. This article is an attempt to explore how the J-pole antenna transforms feed-line impedance to free-space impedance, all the while providing gain found only in the more expensive commercial products.
[ Hits: 142 | Votes: 0 | Rating: 0 ]
- RX Loop Antenna for 80 and 160 Meters
- Four or Five turn one meter loop antenna for 80 and 160 meter band. This home made receive only antena can be assembled in a small place.
[ Hits: 247 | Votes: 1 | Rating: 1 ]
- A Small Loop for 20 and 15 meter band
- A Small Transmitting Loop Antenna for 14MHz and 21MHz, an antenna you might consider if you have limited space, Based on material originally published in Amateur Radio, November 1991
[ Hits: 421 | Votes: 0 | Rating: 0 ]
- Indoor QRP HF Loop Antenna
- A home made magnetic loop for HF Bands. This small and compact loop is designed to support small power transmissions on HF bands, from 7 MHz to 21 MHz
[ Hits: 323 | Votes: 1 | Rating: 10 ]
- Magnetic Loop Antenna for 2 meters
- A small, easy to build, copper tube magnetic loop antenna for the 2 meters band. In Italian
[ Hits: 275 | Votes: 3 | Rating: 9.33 ]
- Quad for 10 and 15 meters
- A light and sturdy Quad for 10 and 15 meters. Basic Quad antenna design considerations. Building and assembling a dual band HF QUAD antenna, designing and joining cross-arms and boom, assembling spreader and element wire installation notes. QST article.
[ Hits: 327 | Votes: 0 | Rating: 0 ]
- Balcony Vertical HF Antenna
- The simple balcony vertical HF antenna made with plastic fishing pole. Just along the pole I install copper wire in 7 meter length. Then was installed ATU. It was used home brew tuner. For each band was used one counterpoise in length 0.8 x lambda/4
[ Hits: 237 | Votes: 0 | Rating: 0 ]
- Z-Match 100 and mini Z-Match
- This is a antenna tuner with wide range tuning for antennas with a Z of + 50 Ohms on all the HF bands.
[ Hits: 297 | Votes: 0 | Rating: 0 ]
- DIY Dual Band 144-440 MHz vertical antenna
updated
- A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.
[ Hits: 1367 | Votes: 14 | Rating: 5.5 ]
- 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 ]
- 3 Element Yagi Antennas for 144 MHz SSB-CW
- A great and efficient monoband VHF portable antenna. The article consist of two version of a 12.5 Ohm 3 elements yagi beam antenna plans for the two meter band, a full sized and a shortened version expecially designed for the SSB and CW on 144 MHz.
[ Hits: 426 | Votes: 4 | Rating: 8 ]
- The ZS6BKW Multiband HF Antenna
- This is the antenna for you guys who want to get on HF effectively, and haven’t too much space or cash to throw around. Actually, it’s a design from ZS6BKW (aka G0GSF), similar to the G5RV, but it actually resonates on five bands, (well 6, actually) and doesn’t rely on a tuner (ATU) to make it work.
[ Hits: 469 | Votes: 5 | Rating: 9.8 ]
- Gap Titan DX Antenna Manual
- Installation and assembly instructions for the multiband HF vertical Antenna by GAP
[ Hits: 365 | Votes: 1 | Rating: 4 ]
- Cross Band Repeaters
- Crossband Repeating is a process where a Ham transmits one signal on one band (typically UHF), and it is received by another radio with a better antenna/power installation, and re-transmitted (typically on VHF) to another radio system, or a repeater. Everyday examples of cross-band repeaters are repeater receive sites that hear the input signals on 2m and retransmit those signals on a frequency higher than 220 MHz.
[ Hits: 206 | Votes: 0 | Rating: 0 ]
- miniVNA PRO Modifications
- The mini Radio Solutions miniVNA PRO is the only affordable vector network analyser (VNA) I know of that offers remote wireless operation.
This is very interesting because it allows to measure the input impedance of HF antennas installed at height without having to deal with coax cable lengths, baluns nor common mode suppression chokes.
However, to render the miniVNA PRO truly field proof, it requires a number of significant modifications.
[ Hits: 136 | Votes: 5 | Rating: 7.8 ]
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