2 m directional
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Antennas : 20M- 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 ]
- 2 Meter 10 Element Quagi Antenna
- This antenna was designed by N6JSX Kuby for Transmitter hiding. Fitting the requirements of directionality, high gain, and portability. This antenna was derived from the ARRL Handbook information on Quagi's and Yagi's; in the absence of two meter Quagi information, UHF Quagi dimensions were scaled into 146 MHz use.
[ Hits: 15652 | Votes: 32 | Rating: 7.06 ]
- 50MHz J-Pole Antenna
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- Need a general purpose antenna on the magic band? The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarised antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
[ Hits: 33817 | Votes: 18 | Rating: 7.05 ]
- Directional arrays
- About collinear array antennas
[ Hits: 4385 | Votes: 0 | Rating: 0 ]
- Build a 2.4GHz Vertical antenna
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- Building a 2.4GHz vertical collinear omnidirectional antenna
[ Hits: 77405 | Votes: 118 | Rating: 6.27 ]
- Home-brew Compact 6dBi Collinear Antenna
- This page details the construction of an easy-to-make collinear 360 degrees omni-directional, vertically polarised, antenna for 802.11b/g wireless networking.
[ Hits: 20572 | Votes: 29 | Rating: 7.89 ]
- Build a hanging dipole for 2 metres
- Described here is a simple omni-directional, vertically-polarized dipole for two meters. Made from coaxial cable, it can be rolled up and stored in a small container
[ Hits: 5334 | Votes: 3 | Rating: 8.33 ]
- J-Pole theory
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- The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
[ Hits: 30316 | Votes: 26 | Rating: 6.87 ]
- HF J-Pole antenna
- A Simple Nondirectional Antenna for Ten Meters
QST February 1950, Easy to build J-Pole antenna for restricted space.
[ Hits: 6613 | Votes: 3 | Rating: 3 ]
- The full-wave loop antenna
- These omnidirectional antennas offer Horizontal polarization, and about 2.1 dbd of gain. They are much quieter than a dipole or a vertical, have a broader bandwidth and will usually out perform a dipole antenna.
[ Hits: 5051 | Votes: 4 | Rating: 6.5 ]
- Corner reflector antenna
- Do you need a high gain antenna? Have you suffered on picking up interference from unwanted direction? You need a directional antenna but a 12 element Yagi will be too attractive!
[ Hits: 1707 | Votes: 4 | Rating: 3.75 ]
- 144MHz omnidirectional antenna
- A full wave 2-meter VHF omnidirectional antenna by ON6MU
[ Hits: 7530 | Votes: 26 | Rating: 5.43 ]
- Slotted Waveguide 802.11b WLAN antennas
- 802.11b WLAN Waveguide Antennas Unidirectional &
Omnidirectional. High gain, Simple construction by Trevor Marshall
[ Hits: 6445 | Votes: 18 | Rating: 7.16 ]
- CantennaCalc
- Kioan's calculator for building a Cantenna , directional waveguide antenna for long-range Wi-Fi
[ Hits: 6693 | Votes: 46 | Rating: 6.75 ]
- CO2KK Wire antenna for 50 Mhz
- 6m (50Mhz) Long wire antenna
There is another form of long wire antenna which provides uni-directional coverage and is easy to build. Description by Arnie Coro CO2KK
[ Hits: 1550 | Votes: 2 | Rating: 7 ]
- Longwave Non-Directional Beacons
- Beacons operating in the longwave radio spectrum, generally between 200 and 450 kHz
[ Hits: 5407 | Votes: 14 | Rating: 5.79 ]
- ITELITE Antennas
- ITELITE manufactures omnidirectional, sector and directional antennas 900 MHz 2.4 GHz 3.5 GHz 5 GHz 5.8 GHz antennas.
[ Hits: 839 | Votes: 6 | Rating: 7 ]
- Dawicom
- Manufacture of microwave directional, omni directional, sector and multisector antennas with horizontal polarization for ISM band 2,4 GHz
[ Hits: 803 | Votes: 0 | Rating: 0 ]
- NPR New Packet Radio - IP over 430 MHz
- NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks
[ Hits: 151 | Votes: 0 | Rating: 0 ]
- G3TXQ SWR meter
- Based on the N2PK design, this swr meter use a stockton directional coupler
[ Hits: 2816 | Votes: 0 | Rating: 0 ]
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