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A multiband Fan Dipole that works on 40 20 15 meters band, making a folded dipole for 7 MHz band and additional element for the 21 MHz and 14 MHz

Experimental Software for Radio Shack PRO-92 and PRO-2067 Scanners

VR-120 Commander is a windows programming software for the Yaesu VR-120 and VR-120D

This resource documents numerous QRP (low power) portable amateur radio operations conducted by W1PID, Jim Cluett, primarily from various outdoor locations in New Hampshire. The content includes detailed accounts, photographs, and operational specifics for over 350 individual "QRP Adventures," often involving hiking, biking, or kayaking to remote sites. Each entry typically highlights the location, date, bands and modes used (frequently CW on HF), and notable DX contacts made with minimal power, sometimes as low as 200mW WSPR. The site serves as a chronicle of practical QRP field operation, demonstrating successful DXing and contesting from challenging environments. It showcases diverse operating scenarios, from mountaintops like Cannon Mountain and Knox Mountain to lakeshores, riverbanks, and even marine mobile operations. The documented contacts span numerous DXCC entities across Europe, Asia, and the Americas, providing empirical evidence of QRP's efficacy in varied propagation conditions and terrains. Specific events like the Worked All Germany contest, 13 Colonies Event, and CWT sprints are also featured.

A short adventure book which introduces the reader to the hobby of Ham Radio through the experiences of 14 year old Oscar.

Links to CW related pages

Bergey Windpower is one of the world's leading suppliers of small wind turbines

An external base for this nifty little paddle by Elecraft

How to configure the Yaesu FTDX 3000 with HRD DM 780 for RTTY operations

Modifications to an Ameritron ALS 600 power amplifier by AF6SA

April instrument, manufacturer of programmable microwave signal generators

Serving the Big Bend area of west Texas

Founded in 1924 CSRA is one of the oldest ham radio clubs in the USA

Selecting appropriate coaxial cable and wire for demanding amateur radio applications, particularly those involving high power or harsh environmental conditions, is crucial for maintaining signal integrity and operational safety. This resource details Harbour Industries' specialized offerings, which include Mil-Spec and commercial designs such as NEMA HP3/HP4 and SAE AS22759, suitable for aerospace, military, and industrial sectors. Their product line addresses the need for robust conductors capable of withstanding extreme temperatures and mechanical stress, often encountered in antenna systems or amplifier interconnections. The company highlights its AeroPOWER® Firezone M25038/3 cable, specifically engineered for high-temperature environments like aircraft engines. This particular product exemplifies their focus on solutions for critical infrastructure where reliability under adverse conditions is paramount. Such cables are relevant for hams building or maintaining stations in challenging climates or those operating high-power amplifiers where internal wiring must endure significant thermal loads. Harbour Industries also provides a range of high-performance cables designed to meet stringent specifications. Their expertise in high-temperature and high-performance cable manufacturing positions them as a supplier for specialized wiring needs beyond standard off-the-shelf options, ensuring durability and performance for advanced amateur radio setups.

Announcement of the Icom IC-7610 during the Tokyo Ham Fair, August 20 2016.

Dealer of ECG Consumer and MTE electronic components

Ham radio contesting from Portland, Maine

A low cost, low power microwave transverter so that you can operate easily on 70cm band even with a HF or VHF transceiver

The purpose of this webpage is to document an attempt at this project starting with the 80m core receiver first and also having the parts on hand for then adding the first dual conversion band (40m)

KTune is a small utility that allows you to use a Griffin Powermate USB knob to tune your Elecraft K3 radio.

D-STAR repeaters in Hawaii

Bill Turner dialcover site, dial cover replacements for antique radio restoration

2012 Ham Radio HK0NA DX Pedition to Malpelo Island, official site with hk0na online log

Europeam perspective on BPL PLC

SM2CEW article on JT65 Deep Search feature

X1M QRP SSB CW HF transceiver by K7JOE

VX-170 at rigpix

Kits for AM FM radio, UHF control, big LED displays, games, controls, timers, chasers and flashers

Smart antennas or the adaptive antenna array and smart antenna technology used with SDR, cognitive radio, MIMO, and other new technologies.

Aerial 51 is an antenna manufacturer producing HF Wire antennas. Their antenna product catalog includes portable, OCF wire antennas for HF bands but also QRP transceivers, and accessories for portable operations.Based in Germany

This group is for support and discussion of the Baofeng UV-3R micro dual band VHF/UHF radio.

RF Samplers and demodulators

CT1FUI - Amateur Radio from Portugal , QSL card collection from 90's

ECARS began operation in 1968 as an Amateur Radio public service net for mobile operators on 7.255 MHz

Live Audio Feed of the KI4FVI repeater in henry county Georgia

Old Cars and Amateur Radio. This club has a repeater on site of the World Longest Running car cruise. Part of the ARRG.US network

How to restore conductivity to your rubber membrane buttons by KV5R

Myths and information about ladder line by KV5R

Rotatable Antenna with Phased Elements based on the orignal design concept of HB9CV antennas, is considered to have an higher gain than standard quad antennas. The Swiss Quad Antenna does not need any spreader or boom.

Homebrewing a Lightweight linked dipole HF antenna for portable SOTA operations

Common problems of the 572B tubes often used in many RF Power Amplifiers

Read more about the purpose, policies, and procedures of The National Traffic System in this 48 pages PDF File

A simple DIY signal generator based on NorCal QRP club kit

The _Alessandro Volta RTTY Contest_ is an annual digital mode competition focusing on Radioteletype (RTTY) operation, challenging participants to make contacts across various HF bands. This event typically occurs in January, drawing a global field of operators aiming to maximize their QSO count and multiplier accumulation. The contest emphasizes accurate exchange of signal reports and serial numbers, with specific rules governing single operator, multi-operator, and SWL categories. Participants utilize software like _N1MM Logger+_ or _WriteLog_ to manage their logs and generate Cabrillo files for submission. Scoring is based on points per QSO, multiplied by unique DXCC entities and Italian provinces worked on each band. The contest encourages both seasoned RTTY contesters and those new to digital modes to engage in competitive HF activity, promoting skill development in digital communication. Final results and logs are typically published on the contest website, showcasing top performers and providing detailed breakdowns of scores.

Introduction to Software Defined Radio by AC8GY

In this article, author examine stresses placed on common-mode chokes (aka baluns) as hams use/abuse them, examine the efficiency of simple dipole multi- band antennas and their feed systems. Stressing a Balun.

Roach pole vertical antenna for 40 and 30 meters band featuring good performance on short skips contacts compared to wire dipole

This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device

An overview of digital HF radio operating modes includes a sample audio recording of each digital mode by WB8NUT