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Specializing in antique, vintage and tube radio repair, all makes. Transistor radio repair- from the 50's to the present. Free estimates.

Schematic of Yaesu FT-857 main board original jumpers based on different radio type

Single Coax Feed to Multi-Band Copper Cactus Antenna.

Open source software designed for the ICOM IC-R5 receiver. Linux, MacOS X and Windows

Maker of QRP Kits, QRP CW receiver and transmitters, audio CW Filters, antenna tuners, dummy loads, and morse code practice oscillator

This online microstrip patch antenna calculator determines the length and width of a microstrip patch antenna for a given frequency

Ham Radio and DX topics by AC6V

Python implementation of CAT system for Yaesu FT-817ND

An interesting project of the popular IW3HEV antenna analyzer in and embedded solution by PA3CKR.

Examines the four basic components of a mobile antenna system: the antenna, coaxial cable, antenna stud, and the mount, emphasizing mount selection as the most complex decision. Modern vehicle designs, including the absence of metal rain gutters and specific trunk configurations, often preclude traditional mirror, trunk lip, ball, or gutter mounts, necessitating universal mount designs. Discusses the economic challenges of designing vehicle-specific mounts due to tooling costs versus production runs, citing exceptions like Dodge Ram hood mounts and GM truck mirror mount brackets. The article acknowledges the difficulty for manufacturers to recommend specific mounts without direct vehicle inspection, given the vast array of vehicle designs and individual installation restrictions. Advises users with mechanical aptitude to study available mounts and assess possibilities directly on their vehicle. Recommends visiting a local communications store for personalized assistance if self-assessment proves difficult, highlighting the value of expert advice to avoid performance issues or equipment damage.

A small program to simplify changing messages in the Expanded Spectrum Systems Freakin' Beacon controller. The program makes it easy to modify an existing message or to have multiple messages available in different files ready to program into the beacon controller.

Echolink, EQSO, Echostation, SSTV, WEFAX, PSK-31 other digital sound card modes

Information and tutorials about all aspects of radio and electronics including propagation, ham radio, electronics, radio history, etc

Details Allied Wire and Cable's extensive product catalog, focusing on its role as both a distributor and manufacturer of specialized wiring solutions. The resource highlights the availability of electronic and electrical wire, various cable types, tubing, and pre-assembled cable solutions. It also specifies their capability in **custom cable design**, addressing unique requirements for specific applications. The site presents information on flexible cable options and a broad spectrum of wire and cable specifications, catering to diverse industrial and technical needs. It outlines the company's capacity to provide tailored solutions beyond standard off-the-shelf products, emphasizing their engineering and manufacturing expertise. Key offerings include **coaxial cable**, connectors, and general wiring components, positioning the company as a comprehensive source for connectivity infrastructure. The content implicitly supports applications ranging from industrial automation to specialized radio frequency installations.

Italian page about a home made a 1 to 40 balun with pictures and measurements on HF bands.

The widest range of stocked components for the electronics, electrical and mechanical engineer.

This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components.

Article about types of materials that make the best earth grounding systems

An off centre fed dipole, with 10 feet of vertical radiator. It needs no tuner on 40m, 20m and 10m by M0UKD

In this youtube video G8GKC M0KKW and 2E0IAJ from Icom UK give a global overview of the ICOM IC-7300 HF 50 70MHz Software Defined Radio transceiver

Article on number stations

The _National Contest Journal_ (NCJ) serves as a dedicated resource for amateur radio contesters, providing in-depth articles, operational strategies, and technical insights. Published bimonthly by the ARRL, it covers a wide array of contesting topics, including antenna systems, station optimization, operating techniques, and rule interpretations for major events like the NA Sprint and various QSO Parties. The journal aims to enhance the competitive edge of participants across all skill levels, from casual operators to serious multi-operator teams, by sharing experiences and data from high-scoring stations. NCJ content frequently includes detailed analyses of contest results, offering breakdowns of scores, participant statistics, and comparisons of operating strategies. Readers can find practical advice on improving their contest performance, such as optimizing logging software usage or maximizing **run rates**. The journal also features columns on specific contest modes like RTTY and provides updates on rule changes and upcoming events, helping contesters prepare for future competitions and achieve better results, often leading to **top 10** finishes in their respective categories.

This publications page lists articles on surface mount devices, amateur radio, soldering, shunts, and measuring large direct currents.

The magic "T" combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads. It is not a magic bullet.

Clandestine radios, cluster beacons and dx stations recordedd by AA5TB

Distributor of extruded aluminum alloy tubes & tubing

Dimensions for the inverted V antenna from 160 to 2 meters by N6JSX

RTTY.COM has been established to focus on the many aspects of Amateur Radio Teletype (RTTY) and to present to the dedicated RTTYer, and to the curious, a location wherein one can find information relating to RTTY and BAUDOT communications.

About longwire antennas, technically to be a true longwire an antenna needs to be at least one wavelength long, but common use of the term by Hams is for any random wire length that is end fed.

Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.

Search for NVIS on google groups

Kenwood TS-590S remote control software

Cobalt Pet is a weblog focusing on shortwave radio. It features shortwave reception reports, product reviews, photos, listening tips, and links. International broadcasters and amateur / ham radio operators are monitored and discussed.

An excellently presented article on the design and construction of a medium wave DX Antenna

Ameritron AL80B AL811H AL572 Amplifier Trouble Shooting. Tubes replacement, resistor changes.

17-Element Very High Frequency/Ultra High Frequency Log Period Dipole Array

A project of a 5 Antennas Relay Switch Box, all Switches & Relays have both contacts wired in parallel to improve reliability of operation, to prevent static build up, when an antenna is not in use the feeder coax is grounded.

A 40 meter NVIS beam antenna by W4NVK

Optimizing performances of the end-fed antennas QRP quarterly article

In this article K3DAV show a very simple way to make an RF choke coil that will remove your RF feedback troubles

Yaesu FT-1000MP Mark V Field review by W4TI

A guide on writing reports to broadcasting stations and obtaining QSL cards

Links to cb radio operators web pages

Get on SSTV FAST with this quick tip quide. All the info you need to get started quickly.

Western New Yorks largest radio store since 1961

Connecting the iPad or the iPhone to a Yaesu FT-817 using an home made cable, using common digital modes like PSK31 RTTY and SSTV. Article by Andrew VK3BQ

Search for recent spy numbers listening or add your loggings.

Demonstrates the capabilities of CW_Shark, a dedicated 32-bit Windows application for Morse code operations. This software facilitates the analysis, decoding, and encoding of CW signals, providing hams with a versatile tool for various aspects of amateur radio communication. It supports four distinct modes: Decode Only, Keyboard QSO, Straight or Paddle Key QSO, and Straight or Paddle Key Practice, catering to different user needs from passive listening to active keying. Operators can utilize the Decode Only mode for signal analysis, while the Keyboard QSO mode allows for text-based interaction. The Straight or Paddle Key QSO mode offers a direct interface for traditional keying, enabling real-time communication. For skill development, the Straight or Paddle Key Practice mode provides a structured environment to hone Morse code proficiency. CW_Shark integrates essential functions for CW enthusiasts, supporting both learning and active participation in Morse code exchanges. Its focused design aims to assist operators in mastering and enjoying the art of _CW communication_.

CW Midi for Windows and for DOS (free), morse code MIDI file creator

Optimization tests of the W3EDP multi-band HF wire antenna a popular aerial among QRP enthusiasts because it is light weight and cheap.