20 m antenna
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Antennas : 12M- Multiband delta loop by DL2HCB
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- A 10-20 meters coverage delta loop antenna by DL2HCB
[ Hits: 81616 | Votes: 42 | Rating: 4.79 ]
- 20m delta loop
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- This antenna is fed for vertical polarisation, to give a low angle of radiation for DX and also a nearly omni-directional radiation pattern.
[ Hits: 65707 | Votes: 69 | Rating: 6.71 ]
- VK5BR 20-40 Metre EH Antennas
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- How to construct a very small but efficient Antenna with PVC Plumbing tube and discarded fruit cans. - Just the thing to fit in a small space such as the house attic
[ Hits: 32221 | Votes: 20 | Rating: 7.24 ]
- I4SBX EH Antennas
- Three eh antenna plans for 20 40 meters bands.
[ Hits: 7000 | Votes: 2 | Rating: 5.5 ]
- Cedevita-20 Antenna
- The Cedevita-20 is a hybrid monoband antenna, the result of merging the radiator of a shortened vertical with one element of a dipole. It fits on most balconies and must be hung from the ceiling.
By ik1zyw Paolo Cravero
[ Hits: 5374 | Votes: 3 | Rating: 5.33 ]
- G4CQM Homebrew VHF Yagi antennas
- Homebrew VHF Yagi 50MHz 144MHz 432MHz 1296MHz 2320MHz 6M 2M 70CM 23CM 13CM Yagis
[ Hits: 21430 | Votes: 104 | Rating: 8.46 ]
- End-fed vertical j-pole and horizontal zepp vertical
- There are many incorrect ideas and claims surrounding end-fed vertical antennas (like the I-Max 2000), end fed horizontal antennas, Zepp, and J-pole antennas. This article describes it.
[ Hits: 8780 | Votes: 4 | Rating: 6.75 ]
- Mobile Helix Antennas for HF
- Normal mode helix antennas for HF mobile. Photos andn plan for a 20 meters mobile helix antenna by N2MH
[ Hits: 13451 | Votes: 15 | Rating: 7.46 ]
- Jpole by EA6IC
- Jpole antenna plan for 144 and 435 Mhz
[ Hits: 4316 | Votes: 11 | Rating: 1.63 ]
- HF J-Pole antenna
- A Simple Nondirectional Antenna for Ten Meters
QST February 1950, Easy to build J-Pole antenna for restricted space.
[ Hits: 6614 | Votes: 3 | Rating: 3 ]
- Thinking about Ideal Loops
- Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.
[ Hits: 2270 | Votes: 6 | Rating: 7.33 ]
- W6NL 40m Moxon Yagi
- Designed and built by W6NL looks like a loaded yagi this 2 element moxon antenna offer 6dbi
[ Hits: 4641 | Votes: 11 | Rating: 4.91 ]
- JJ6 Antenna
- VK2ABQ G6XN W4RNL G4ZU comparisons
[ Hits: 2271 | Votes: 1 | Rating: 7 ]
- 6 Meter Moxom
- Download a 6 meter moxon antenna, drawings, photos, plots by Allen Baker KG4JJH, (10 Mb!)
[ Hits: 3825 | Votes: 7 | Rating: 3.43 ]
- The 5 Bands Wire-Beam
- This wire-beam has one radiator-element, feeded with 450-Ohm-Wireman-twinlead and needs an antenna-tuner. For the bands 6m, 10m, 12m, 15m, 17m and 20m bended reflector-elements are used.
The support is a cross of 4 fibreglass-fishing-rods
[ Hits: 5647 | Votes: 2 | Rating: 7 ]
- Travel loop antennas
- PA11019 Travel loop antennas, these antennas cover 6.300 to 29.200 mHz , handle 35 Watts and have a packing size of 43 cm, ideal for fieldwork, or mobile operations.
[ Hits: 3563 | Votes: 2 | Rating: 9.5 ]
- VU2TQC Slim Jim
- An home made slim jim antenna for 2 meters band by VU2TQC
[ Hits: 1127 | Votes: 0 | Rating: 0 ]
- Understanding Standing Wave Ratios SWR
- We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver'
s output power verses the portion of that power reflected by the antenna system
[ Hits: 8714 | Votes: 8 | Rating: 4.75 ]
- GAP Titan DX performance test
- GAP Titan DX Evaluation, antenna for 10m 15m 20m 40m 80m
[ Hits: 14569 | Votes: 18 | Rating: 5.84 ]
- Spiderbeam antennas
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- High Performance Lightweight Antennas. The spider beam is a full size lightweight tribander yagi for 20/15/10m, made from fiberglass and wire.
It has been specially developed as a highly efficient antenna for dx-pedition and portable use.
[ Hits: 40695 | Votes: 27 | Rating: 6.71 ]
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