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G7EYT, Carl - G6NLC and Neil - M1NCD sucessfully completed a 14Km range check with 802.11B equipment and home built antenna's. -
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A balun is a device that is used at the feedpoint of a balanced antenna when an unbalanced feedline is desired to feed the antenna. Balun is a contraction for BALanced to UNbalanced. -
For radio amateurs considering homebrew antenna projects, this resource details several designs from WE6W, an experienced operator. It covers the construction and characteristics of a _160 Meter QRP Loop Antenna_ optimized for high voltage, along with standard and folded variations of the double bazooka antenna. The site also presents a unique Field Day antenna design and instructions for building a Sterba Curtain, a directional array known for its gain. Each design includes practical insights from the author's building experience. The author provides comparative data, such as the performance of a standard bazooka against a traditional dipole, offering real-world context for antenna selection. The Sterba Curtain section includes notes on its beamwidth and gain, crucial parameters for directional operation. These designs are suitable for hams looking to experiment with cost-effective, high-performance antennas for various bands and operating scenarios, from QRP on 160m to directional DXing with a Sterba Curtain, which can offer significant forward gain, often exceeding **10 dB**. -
The only ACARS software to feature in-line message decoding and aircraft tracking. ACARS Reception and Decoding Software for legacy Windows versions. This software will allow you to decode the ACARS signals received by your air band receiver using the soundcard that is installed in you PC -
The Pfeiffer Maltese Quad Antenna System presents a unique approach to traditional quad antennas by utilizing a linear loading technique. This method effectively reduces the overall size of the antenna while maintaining its performance capabilities. Designed by Andrew Pfeiffer, the antenna's configuration resembles a Maltese cross, which not only enhances its structural integrity but also allows it to withstand challenging environmental conditions. This system is adaptable, offering various configurations from a 4-spreader Maltese Quad to a 16-spreader Maltese Quadruple-Cross, making it suitable for operators looking to optimize their setup without sacrificing efficiency. This antenna system is particularly versatile, covering multiple bands including 40, 20, 17, 12, and 10 meters. The design focuses on minimizing the physical footprint while ensuring effective signal transmission and reception. Amateur radio operators can benefit from the detailed plans available in the accompanying PDF, which outlines the construction process and specifications. Whether you're a seasoned DXer or a newcomer to the hobby, the Pfeiffer Maltese Quad Antenna System offers a practical solution for enhancing your station's capabilities. -
Excellent guide to build your own G5RV antenna by Lombry -
Simple vertical radiator with matching box. No traps, no tuner required for this multiband antenna -
Short guide to home made antennas for shortwave reception, in pdf format -
This halo antenna for 50 MHz is made with a true Gamma Section this time and is fashioned from aluminum -
This is a custom home made antenna, based on concept of commercial HF antennas, that may work on 160 meters too. -
Weather Fax for Windows hardware and Software. -
The word balun means balanced-unbalanced: it's used to adapt a balanced device to an unbalanced one, read more basic thory on Ununs and Baluns -
Force 12 HF and VHF antennas, aluminim towers and masts for ham radio -
Listen to Jersey City cops fight crime, live and uncensored. Anything can happen out on the streets of the city -
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Antenna Restrictions, Power Restrictions, RFI Problems, or Limited Space keeping you off the air? -
SkySpy is a cheap Windows 95/98 software program combining a decoder and a database in order to decode ACARS transmissions, the digital data link between commercial aircraft and ground stations, demod ACARS FAX METEO POCSAG HAM. Software is no more supported and developed. -
This antenna is unique in that it is enclosed entirely in 3/4" PVC -
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Portable, and shortened with loading coils rotatable dipoles for 6 meters, 20 meters and multibands. -
DX clusters aggregate real-time amateur radio spot data, enabling operators to identify active stations and propagation conditions across various bands and modes. DXWatch offers a web-based interface for this essential operating tool, allowing users to filter spots based on specific criteria such as band, mode, or callsign. The service integrates features like a customizable filter system and an external widget for embedding spot data on other platforms, enhancing its utility for DXers and contesters. Operators can access worldwide spot data, with options to zoom into specific regions like the US, Europe, or the North Atlantic, facilitating targeted DXing efforts. The platform also includes a watchlist feature for registered users, enabling personalized tracking of desired stations or entities. Real-time data on solar flux index (SFI), A-index, and K-index are displayed, providing crucial propagation insights alongside the DX spots. -
The page describes a Double-L antenna for 80 and 160 meters bands, designed by Don Toman, K2KQ, with a simple, effective, and ground system-free design. The antenna is a center-fed half-wave vertical with horizontal top and bottom sections, providing good performance without the need for an elaborate ground system. -
The Cubic Quad antenna is a commonly homemade antenna in the range of about 150 odd MHz. Our little project was to design one of these for use in the 2.4GHz range for 802.11 wireless LANs. -
Contructing precedure and tune up of a dual band mobile antenna. This antenna is just a 1/4 wavelength resonator for both UHF and VHF band. It provides no GAIN as compared to other multi-section design. -
IPSound is a Free application for audio exchange client to client over a TCP/IPv4 network (Lan or Internet). The main purpose for the existence of IP Sound is to provide low quality audio 8-16kHz, with low latency for use together with remote control software for "ham" radio amateur equipment. IP-Sound is developed by SM5VXC. -
Schema of a self made balun used to match randmon wire antennas, mainly for shortwave listening pourposes, in italian -
Circuits of SSB Transceiver, AM DSB Transmitter, Antennas, BFO, VFO, 807, FM Mike, Crystal filter and more. -
Build your mobile antenna which outperforms Hustler by 10db and ATAS-100 by 18db. From 80 to 10m. The HB9ABX mobile HF antenna, designed for 10 to 80 meters, was developed by Felix Meyer and outperforms commercial antennas like HUSTLER and YAESU ATAS-100/120 in field tests. Made from fiberglass rods and enamelled copper wire, it includes a loading coil with adjustable taps for tuning across bands. Installation requires solid grounding, and adjustments are made via whip length and coil settings. An antenna tuner ensures optimal SWR. Users must handle fiberglass with care due to health risks. This design proved highly effective in South America and Europe. -
Everybody says keep one in your bag, nobody seems to make one work right. Here's the straight scoop on why the J-pole is not an easy antenna to duplicate! -
The RockLoop Antenna is a compact multiband portable and indoor antenna suitable for QRP operations on the 10, 14, and 21 MHz bands. The page provides detailed information on the design and usage of this antenna, making it a valuable resource for amateur radio operators looking to improve their setup. The intended audience is amateur radio operators interested in building and using antennas for QRP indoor operations. -
Amateur radio world maps by VK2CA including DXCC list. -
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Details the construction of a J-vertical antenna specifically for the 10-meter band, offering a practical alternative to a _Slim Jim_ design for 28 MHz. The resource outlines the use of aluminum tubing for the half-wave vertical section and coaxial cable for the quarter-wave matching section, providing specific calculations for element lengths based on frequency and coaxial cable velocity factor. It contrasts the performance of the J-vertical with center-fed dipoles and end-fed verticals, noting superior results in previous comparisons. The article further presents a more recent iteration of the J-vertical, constructed using a fiberglass pole and insulated wire, with updated dimensions for 28.8 MHz. It includes practical advice on weatherproofing connections and securing the antenna for durability against adverse conditions, referencing the survival of an original _J Vertical_ during 110 MPH winds in 1987. The SWR performance is reported as 1.1:1 at 28.6 MHz, maintaining below 1.5:1 across 28.3 to 29 MHz. -
The boomless quad antenna is a unique design that offers versatility for amateur radio operators. This antenna consists of two half-wave dipoles arranged in a square or circular shape, allowing for both vertical and horizontal polarization depending on the feed point. The design facilitates easy installation and rotation, making it suitable for various operating conditions. The construction utilizes strong materials, such as bamboo, and incorporates waterproofing techniques to enhance durability. This project outlines the necessary dimensions and materials, including copper wire and insulators, to successfully build the antenna. It emphasizes the importance of tuning each radiator element for optimal performance. The boomless quad is particularly effective across multiple HF bands, including 14 MHz, 21 MHz, and 28 MHz. By following the detailed instructions, operators can achieve a reliable and efficient antenna setup that enhances their DXing and contesting capabilities. -
TRX-Manager allows control of most radios on the market and features many original features. By Laurent Labourie F6DEX -
calculates the dimensions and spacings of the elements needed to build a log periodic antenna, given tao, sigma and the lower and upper cutoff frequencies. -
how to modify a Cb linear amplifier to use in HAm HF band -
Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible -
7 MHz Vertical antenna for ham radio band of 40 meter text in spanish and english -
How to easily home-brew baluns even in strange formats 1/1 - 2/1 - 4/1 - 6/1 - 9/1 - 12/1 et 16/1 for bands from 1.8 to 30 (50) MHz in french -
Build a double bazooka coaxial dipole, broad-band dipole antenna -
Cobra Grant Superstar Emperor Galaxy President Midland Uniden and more radio mods -
A comparison of different multi-band dipole techniques -
DigiPan provides a panoramic display of the frequency spectrum in the form of an active dial scale extending the full width of the computer screen. DigiPan is the result of a joint effort between myself and Nick Fedoseev, UT2UZ, the author of MIXW32, and is intended to make PSK31 operation easier and more enjoyable for everyone. You can download digipan 2.0 for windows form here. -
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PDF file with plans to build an eh antenna for 10 meters band, by lloyd butler VK5BR -
The Little Stick antenna is an aluminium version of the Vertical Bazooka design which was made from coax. -
Manuals for : ICOM, Yaesu, Kenwood, Alinco, Standard, Uniden -
