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This page provides a list of scanner frequencies for hams in the UK. It offers a comprehensive guide for ham radio operators looking to find and tune into various frequencies for communication. The page is useful for hams who want to explore different channels and connect with fellow operators in the UK. Whether you are a beginner or an experienced ham radio enthusiast, this resource can help you discover new frequencies and expand your communication network.

2 filter designs a 3-pole and a 5-pole

About antenna or aerial resonance and bandwidth and the impact of RF antenna resonance and bandwidth on radio communications systems.

Javiation page dedicated to the ICOM IC-R20 150KHz - 3305 MHz communication receiver

Natick emergency radio net

This air-powered Tennis Ball launcher is designed to launch tennis balls over trees towing fishing line.

How to program the memories of the Yaesu FT-7900R without a computer

An interesting guide to aerials comparing height, gain and angles

A world leading developer of spectrum analyzers, RF system, test equipment and microwave solutions

Producer of meter test equipment for electricity meters testing and calibration

Building the W3NQN bandpass filters

The Ultimate Control Software for the IC-7300, IC-7610, IC-7600, IC-7850, IC-7851 and Others is a control software suite that includes additional interesting features such as support for the built in Spectrum Scope, Audio monitors, Shortwave DB, CW Terminal, Clublog Spotting, Memory management, interface to Ham Radio Deluxe Logbook, DM780, n1mm+, log4om, DXLab and other. Runs on Windows OS, commercial licence.

KE7X Elecraft K3 operating manual

A light and sturdy Quad for 10 and 15 meters. Basic Quad antenna design considerations. Building and assembling a dual band HF QUAD antenna, designing and joining cross-arms and boom, assembling spreader and element wire installation notes. QST article.

Midwest Mountain Thunder CB Radio Group is a group of CB SSB operators that started in the Midwest as a branch off of the Washington State group. good clean radio

Mobile installation of a Kenwood TM-D710 and comparison with the Yaesu FT-350R

Morse Code And Radio For Kids and Amateurs. This guide covers many different aspects of the history of and how to learn Morse code.

Pictures and information about a solar powered station located in an old caravan in the Australian Bush by VK5SW

Italian amateur radio portal

The Kenwood MC60A with preamp, suffers from RF feedback, a search on the web reveals the extent of the problem. This document explain how to fix this problem.

Baofeng UV-5R dual band handheld transceiver, features, pictures, movies, links and manual.

The Kenwood TS-450S is a formidable transceiver covering 160 through 10 meters including the WARC bands with 100 watts input

Russian ham blog

This antenna is designed for stations having a difficult time putting a decent signal on 160M from small or CC&R d lots. It is a 24.5 ft. vertical antenna, made from three 10 ft. PVC sections bolted together, and half wavelength of antenna wire helically wound around the PVC sections.

Picture gallery of VR2IO morse keys

Official site of ARI Comitato Regionale Friuli Venezia Giulia

This Announcement First Appeared 13 August 1996 on the ATV Mailing List

When assembling a robust shack, the quality of interconnects often determines overall system integrity and signal fidelity. Neutrik, with over 50 years in the connectivity sector, specializes in professional-grade connectors that withstand rigorous use in entertainment and industrial applications. Their product range includes XLR, speakON, powerCON, and opticalCON series, which are frequently adapted by hams for critical station infrastructure, particularly in contesting or DXpedition environments where reliability is paramount. Amateur radio operators often repurpose these durable connectors for antenna switching matrices, audio interfaces for digital modes, or power distribution systems. The robust locking mechanisms and high-quality contact materials found in Neutrik products ensure stable connections, minimizing intermittent faults that can plague field operations or even fixed station setups. This attention to mechanical and electrical integrity aligns well with the demands of high-power RF environments and sensitive receive chains. While primarily serving the pro-audio and video markets, the engineering principles behind Neutrik's designs translate directly to the needs of radio amateurs seeking superior performance and longevity from their cabling and connection points. Their commitment to innovation, as highlighted by their 50-year journey, suggests a continuous evolution of products that could benefit future amateur radio applications.

QRP CW transceiver Kit for 20 or 40 meter band, by OKA Hills Research, assembly history and description

Micro controllers and sensors

Switching Regulator Basics By Mike Martell N1HFX

The VU2BBB repeater, located in Matheran, Maharashtra, commenced operations in the late 1980s, a significant undertaking by the Bombay Repeater Society. This repeater facilitates VHF and UHF communications for local amateur radio operators, providing extended range and improved signal reliability across challenging terrain. Its establishment marked a key development in regional amateur radio infrastructure, offering a crucial node for local nets and general QSO traffic. The repeater's operational parameters include specific input and output frequencies within the 2-meter band, typically utilizing a standard offset. CTCSS tones are often employed to mitigate interference and ensure selective access for authorized users, a common practice for repeaters in densely populated areas. Regular maintenance and upgrades ensure _VU2BBB_ remains a reliable asset for the amateur community, supporting emergency communications and daily amateur radio activities. The _Bombay Repeater Society_ continues to oversee its operation, reflecting a sustained commitment to local ham radio services.

Des Moines Radio Amateurs' Association Central Iowa’s voice for Ham Radio

WD2XSH Experimental Station (505 - 510 KHz) WD2XKO Transmitting Station Stanfield,NC operating between 135.7 to 137.8 KHz.

Radiosport headsets & boom-mic headsets for amateur radio

Building an amateur station for competitive radiosport involves a number of critical steps, regardless of the band or bands you focus on. These include, but are certainly not limited to: Station layout, Equipment interconnection and switching, Inter-station interference, Antenna selection. Radio interface with the logging program, CW and voice keyer integration, Rotator control

QSL card printer based in Bethlehem, PA offer QSL Card printing, Bronze Plaque with sation ID and Printed Envelopes

How GPS works

A portable (15.5 foot diameter) NVIS loop for 3.5 to 7.3 MHz. Performs well at high and low takeoff angles, and has smaller footprint than most NVIS antennas.

A portable wire antenna for the HF bands, made with a common speaker wire. In its natural form, the speaker wire acts as parallel feed line coming up to the bottom of the PVC feed point. From there, it's split into two wires, one heading out each side of the PVC tee.

A very well done presentation about End-Fed Half-Wave antennas. This PDF document contains a summary of experiences in how to build custom EFHW antennas. Includes an interesting comparison table of UnUn configurations with recommended toroids, Wire size, turns and capacitors. An useful recap on common errors in building homebrew EFHW Ununs completes the document.

The No-Nonsense Extra Class License Study Guide (for tests given between July 2016 and June 2020) This is the study guide you want if you want to pass the Extra Class exam

TR-7 PIN diode test procedure

Solar Shack in the Australian Bush

Harbour Rock is primarily a top quality vacation home. But for the ham, DX’ing or contesting is irresistible at a QTH where you can start your own pileup.

This amplifier uses two 60w Spectrian amplifier boards with the usual input and output hybrid coupler and combiner.

Article on antenna feed impedance and the importance of matching RF andtennas to feeders, including notes on Radiation resistance, loss resistance, and efficiency are also detailed.

A photographic reference for wire and wireless telegraph key collectors and historians

Louisville Hamfest - the first Saturday in September after Labor Day. A yearly event sponsored by the Greater Louisville Hamfest Association.