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Manufacturers of a growing line of Amateur Radio accessories, electronic kits, and unique gadgets including Whiterook morse keys and keyers

40 Meter 2 Element Parasitic Delta Loop wire antenna with pictures of delta loop assembling

WXtoImg is a freeware advanced APT (NOAA, Meteor) and WEFAX (GOES, Meteosat) weather satellite decoding program for Windows, Linux, and MacOS X

CWLab02 demonstrates a Windows-based software solution for Morse code enthusiasts, enabling both CW and CCW (Computer-Generated CW) sending and receiving within a single, integrated window. The program incorporates an improved CW interface, aiming to simplify the process of decoding and generating Morse code signals. It provides a straightforward method for hams to practice their CW skills or integrate computer-generated code into their operations, supporting real-time interaction with Morse code transmissions. The software's design focuses on ease of use for CCW operations, allowing operators to quickly generate and transmit code. While specific technical details on its decoding algorithms or WPM range are not provided, the emphasis on an "improved CW" suggests refinements in its signal processing capabilities. The ability to send and receive in the same window streamlines the user experience, offering a practical tool for training, casual QSOs, or integrating into a digital shack setup.

Drake has been a manufacturer of electronic communications equipment for over 50 years. Our reputation for producing quality American made equipment has been well earned and is respected internationally. Today Drake produces equipment for various markets around the world.

Vertical antennas for all HF bands, expecially 80 40 20 meters bands

Create Online Maps, Check Forcasts and Conditions, more features being added each month, by hfradio.org

A drawn of a ZL Special antenna for the 10 meter band or 28 Mhz

A Portable 2 element Triband Yagi antenna that can work on 10 15 20 meter band by VE7CA

S Meter Lite is a no-cost program that displays your receiver's S Meter signal strength in a window by W8WWV

Download setup JT65-HF Free HAM software via IZ4CZL web site, a Terrestrial JT65A mode developed by W4CQZ

Rigid Dipole antennas for 14 MHz band using PVC and Aluminium tubing

Table of allocation of international Call Sign series

Web receiver of hb9afz-using icom pcr 1000 on weekends 0800-2000 utc.

A reversable quad antenna for 40 meters band by N4JTE

Hendricks QRP Kits is a company that specializes in high quality, low cost QRP Kits

A full size half-wave 30m dipole installed in an attic

Three eh antenna plans for 20 40 meters bands.

Drawings of shortened antenna for indoor usage, using short pvc tubes for 2 , 20 and 40 MHz by f1rfm

Description of PSK31, mailing list, frequency for QSO

Magnetic loop antenna calculator and loop antenna design program for windows let you calculate dimensions for magnetic loops antennas, in german

This project uses a widely available IRF510 MOSFET, work on HF 80, 40, 30, 20 and 17 meter bands

Founded in 1992 this DXing club has over 1725 members and is based on the 6288 feet high summit of Mount Washington in Sargents Purchase, New Hampshire, USA

A new tronics company, antenna maker, HF vertical antennas, vhf antennas, cb antennas

Electronics service manual exchange, IC-706 service parts, schematics from ICOM official manual

This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter band (1.83 MHz) vertical antenna.

Radio Mods, Technical Data, where to Purchase Equipment Amateur Repeater Coordination. All you need to build a repeater

YAESU FT-1000/MP/MARK V (filed) interface, this one of numerous RTX sound blaster interfaces you can find on the internet, but this one include: FSK KEYING to use with the RTTY port, DVS-2 to use the interface in AFSK mode, this include all digital modes + voice keyer, CW KEYING

One common challenge in antenna systems is mitigating common-mode current on the feedline, which can distort radiation patterns and introduce RF in the shack. This project details a 1:1 balun design that ingeniously avoids traditional ferrite beads, often a costly component, by substituting them with steel wool. The steel wool, when integrated into the balun's construction, effectively attenuates unwanted RF on the outer braid of the coaxial cable, ensuring that the antenna radiates efficiently and as intended. The construction involves winding coaxial cable through a PVC former, with the steel wool strategically placed to provide the necessary common-mode impedance. This method offers a practical and economical alternative for hams looking to build effective baluns without the expense or availability issues associated with ferrite cores. The design principles focus on creating a balanced feed to the antenna, crucial for optimal performance of dipoles and other balanced radiators. Experimentation with such designs can lead to improved field results, particularly for those operating with limited budgets or seeking innovative solutions for their antenna systems. The simplicity of using readily available materials like steel wool makes this a compelling build for many radio amateurs.

Build a Multi-Band Mono Delta Loop for 40, 30, 20 and 15 Meters.

Regenerative short wave radio schematic

QSO Map Deactivated Due to a new pricing structure for Google Maps APIs (since March 1, 2025), the map function is no longer free to use. For this reason, the QSO Map has been deactivated.

Construction details for a simple but effective antenna for 2.45Ghz wireless lan use.

Complete tower system incorporates rotator mount, and lateral support collars. You never have to climb again - and forget the hassle of tilting over to work on large arrays. The "One Man Tower" is the strongest dmall footprint free standing self erecting tower in the world

A helically wound two element 40 meter yagi beam antenna from a 1974 QST article

This PDF File desscribes how to homemade a multi-band end-fed trapped wire antenna resonating on the low bands of 160 80 and 40 meters. Contains trap design instructions and some construction tips.

Ham Radio Maidenhead Grid Square Locator Geocoding with Google Maps by by HA8TKS

The Radio Attic serves as a dedicated online marketplace for **antique radios**, offering a platform for enthusiasts to buy and sell vintage communication equipment. The site features classified advertisements, each displaying full-color photographs of the radio, a detailed description, and a direct link to the seller's email address. This structure facilitates direct communication between buyers and sellers, as transactions are handled independently, not by the webmaster. Listings are categorized by style, manufacturer, and year of manufacture, including models from Admiral, Airline, Atwater Kent, Crosley, Emerson, Fada, General Electric, Philco, RCA, Silvertone, and Zenith. The platform also tracks new additions, with 49 radios and 6 books added in the past 30 days, and highlights recently sold items, totaling 157 radios this year. Beyond sales, the site provides resources like a price guide and information on upcoming swap meets, such as the Southeastern Antique Radio Society's Spring Swap Meet in Forsyth County.

A 6 elements VHF Yagi antenna designed with YAGIMAX 3 and made by SV1XY with excellent results on local and satellites contacts like UO-14 and AO-27

Antenna modelling techniques and examples by W4RNL

The Open SDR Project

This article addresses the subject of obtaining the best signal transfer from an antenna to the typical 50-ohm receiver input over a wide frequency range, with emphasis on medium-wave (500 - 2000 kHz), encompassing the standard AM broadcast band and the 160-m amateur band.

A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings

This Multiband Cubical Quad antenna a boomless Quad design with glass-fibre arms and a single coax wire connected to a remote antenna switch. This aerial work on 8 bands and has a 60-degree beam width. Despite achieving critical technical requirements, the antenna's three-dimensional structure presents obstacles, such as installation issues on fixed towers and risk of frost damage. The spider framework is built of stainless steel, with a compact 18-inch boom and strong angle iron arms. Tait use a variety of methods to fasten element wires and suggests placing them on the outside of the spreaders for improved insulation. The use of nylon twine or parachute cord between key attachment points allows for adjustable separation between pieces.

Kioan's calculator for building a Cantenna , directional waveguide antenna for long-range Wi-Fi

Dipole, Yagi, Vertical, Cubic quad, Log periodic, J-pole, coil, and transmission line design package for the Macintosh

Repeater system in the New York metro area Service provided by W2LIE.NET

GAP produces HF vertical antennas

provides much greater flexibility in the construction, analysis, and interpretation of radiating structures using a rewritten NEC module.

An home made antenna analyzer made with Arduino Nano