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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. -
DXKeeper is a robust, freeware logging application designed for amateur radio operators, providing extensive capabilities for managing two-way radio contacts. It records and organizes QSO data, integrates with various callbook CD-ROMs like _HamCall_ and QRZ.com for automatic data population, and supports real-time logging from digital mode software such as MMTTY and MixW. The software runs on Windows NT through 8, supporting both 32-bit and 64-bit systems, and is a core component of the DXLab Suite. This application offers detailed tracking for numerous awards, including DXCC, WAZ, WAS, and IOTA, highlighting needed entities and automating the QSL process. It generates QSL cards and labels, addresses envelopes, and facilitates uploading and downloading of QSO confirmations with eQSL.cc and Logbook of the World (LotW). DXKeeper also interoperates seamlessly with other DXLab Suite members like Commander for transceiver control and SpotCollector for DX spot aggregation, significantly streamlining contest and DXing operations by providing a unified interface for logging and station management, including over **40** supported awards and **3** major online QSL services. -
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Freeware Windows QSL card printer software. This tool will let you create you own QSL cards importing pictures and customizing colors and other cards aspects. Print directly to your ink-ject or laser printer. Runs on windows systems by wb8rcr -
40 Meter 2 element full size parasitic delta loop wire beam construction and switchable -
HRO offers a variety of amateur radio products for sale, including transceivers, antennas, and accessories. Users can browse products by category or search for specific items. The site also features promotions and discounts on selected items. -
A rugged motorized satellite antenna tracking system for construction by the home handyman -
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This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. It is only 11" wide, 4" high, and 9" deep. Operates for 40, 20, 17, 15, 12, and 10m -
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 -
UI-View is an APRS client that runs on Windows. This application differs from most APRS software in that it isn't designed just to be used with TNCs in terminal mode. UI-View also supports TNCs in KISS mode, AGWPE host mode and BPQ host mode. The 32 bit version of UI-View also supports WA8DED/TF host mode, and the variant of it used in the SCS PTC-II and PTC-IIe. -
HF anf VHF amplifiers made in U.S.A. by Command Technologies, Inc. now acquired by Palstar -
Two dipoles fed from the same coaxial line by n6bz for 20 and 15 meters -
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QRZ.com provides a comprehensive online **callbook** service, enabling amateur radio operators to look up detailed information for over 2 million licensed stations worldwide. Each entry typically includes the licensee's name, address, QSL route, and often a personal biography with station details, antenna configurations, and operating interests. The platform integrates various features such as a **Logbook of the World (LoTW)** interface, allowing users to confirm QSOs directly, and a robust search engine for rapid call sign resolution. The resource also features dynamic content, including real-time solar-terrestrial data from N0NBH, an active online swapmeet for buying and selling amateur radio gear, and a news section with articles covering current events, contest results, and special event station announcements. Recent news items highlight topics like the 'Five Two Simplex Challenge' and the '9th HamSCI Workshop,' indicating a focus on active operating and scientific engagement within the amateur community. Furthermore, QRZ.com supports various amateur radio awards, such as the new 'USA250 Award,' encouraging participation in specific operating programs. -
Description and phots of a DIY moxon antenna for six meters band, includes clear pictures, drawings and assembling instruction to build this compact antenna for 50 mhz by N2MH -
The Cubical Quad antenna is a popular choice among amateur radio operators due to its robust design and excellent performance characteristics. This resource provides essential scaling formulas that help determine the lengths of the antenna elements and the necessary gamma match values for various frequencies. The design is adaptable, allowing operators to optimize for gain or front-to-back ratio by adjusting the spacing between elements. The accompanying Excel files facilitate precise calculations, making it easier for both beginners and experienced hams to construct their own Cubical Quad antennas. In addition to the design formulas, the resource includes practical insights from the author, who has successfully built and utilized these antennas in various field events. The document outlines the tuning process for achieving minimum VSWR, ensuring optimal performance. With detailed illustrations and performance data, this guide serves as a comprehensive reference for anyone looking to delve into Cubical Quad antenna construction and optimization, enhancing their amateur radio experience. -
Indoor loop antenna for six meters band, project by Colen Harlow, G8BTK -
A short but efficient dipole for 40 meters band -
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All about folded dipoles, a variation of the dipole is an antenna called a folded dipole. It radiates like a dipole but sort of looks like a squashed quad. -
SysLabs RadioControl is a software platform for radio device control and application development. It operates on _Windows_ versions from Windows 95 and Windows NT 4.0 through _Windows 11_. The software is available in Lite, Standard, and Professional editions, each including Frontpanel for direct radio control, a Frequency Database for management, and a Memory File for channel operations. Features include frequency identification, memory scanning, and graphical spectrum views with bitmap export capability. The Professional Edition supports multi-device control and utilizes radio device-internal scanners, achieving scan rates of **40-60 steps per second** compared to the RadioControl-internal scanner's **10-20 steps per second**. Supported devices for internal scanning include AOR AR-5000, AR-8200, AR-8600, AR-ONE, R&S EB200, and various Icom receivers and transceivers. RadioControl supports older devices such as ICOM IC-R71, IC-R7000, IC-706, IC-735, YAESU FRG-8800, and FRG-9600, extending their control capabilities. The platform offers APIs for integration and supports import/export with formats from VisualRadio, SCANcontrol, shoc Radio Manager, WiNRADiO, AOR ACEPAC-3A, as well as generic Text, CSV, and HTML. DXZone Focus: Radio Control | Windows | Frequency Management | API -
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Select your favorite satellite and watch its trajectory on Google Maps in real time! Includes ISS tracking, Weather, Geostationary, GPS Military, and of course Amateur radio satellites. N2YO provides comprehensive real-time satellite tracking with particular emphasis on amateur radio satellites. The service offers precise pass predictions calculated for user-specific locations, displaying upcoming passes with azimuth, elevation, and duration data essential for ham operators planning satellite contacts. N2YO features dedicated tracking for amateur radio satellites including FM, linear transponder, and digital satellites, with frequency information and downlink/uplink details. The platform delivers live tracking visualizations on interactive maps, Doppler shift calculations, and automated email notifications for upcoming passes. This free resource integrates weather satellite tracking alongside NOAA imagery, making it invaluable for radio enthusiasts pursuing satellite communications. -
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Real time tracking of an unlimited number of satellites, fast, accurate and easy to use. Automated FTP keps updates. Also support a great number of interface to control rotors azimuth and elevation plus frequency doppler shift. Since 2017 Nova is free to donwload and use. No support is given. -
Free programmable LOW/HIGH/BANDPASS FIR filter in the audio range 0-4kHz -
Photos and comments on building an helical antenna for wifi -
The page provides a tool to create a customized Ham Radio Az Map on the fly, with various dimensions available. It is a valuable resource for amateur radio operators to visualize and optimize pointing of directional antennas. The content includes maps for different regions, prefix maps, and world maps. -
Online Catalog. All about Radio comms, HF VHF Scanner CB radios, antennas and accessories -
8 elements quad antenna for 2 meters band, centered on 145 Mhz -
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. -
4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Can be interfaced to HFwin32 propagation prediction software. -
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A comprehensive list of what is on the frequencies between .5 MHz and 5,000 MHz -
Harry Lythall SM0VPO/G4VVJ homebrew web site, contains several projects, antenna notes and plans, receivers and transmitters plans, regularly updated. -
Delta loop and vertical antenna plans with translation in italian -
Do these things do exactly what they say they do, or are they total hogwash? - Patrick lifts the lid on the MLB -
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EH antenna for 160 mt: my experiment and comparison with a short vertical. with full details on construction procedure and testing. -
Plan of a helix antenna for 2 meter satellite use by VK5ZAI -
About G5RV antennas, with radiation pattern produced with eznec -
Documents and schema on how to build a Magnetic Loop Antenna fo 80/30 mtrs -
HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations, Attenuators, Audio Filter design, Coil Winding, Decibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps QRA Locator to Latitude/Longitude, Radio Horizon calculator, Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations Download zip By G4VWL -
Calculate Double bazooka for Win3/Win95 by W4BEJ -
4 Element Cubical Quad, Yagis, LZA Circular Quad, Shrunken Quad , quarter wave, J-Pole, beam mounting , changing polarity -
The page describes two types of 2 meter J-Pole antennas, one made of copper pipe and a roll-up J-pole made of TV twin lead, providing dimensions, components, and construction details. It is authored by Dr. Carl O. Jelinek N6VNG.