Search results

Extending The Bandwidth of 80 Meter Dipoles

Gridmaker takes your ADIF-file and searches for all the grids on the specified band. It then makes files for use in DXAtlas

J49I operated from Crete Island (EU-015, KM25PH) during the 2008 _CQ WW DX CW Contest_, focusing on multi-operator category participation. The station's activity centered on maximizing contacts and multiplier acquisition across various HF bands during the competitive event. Operators aimed to achieve a high score by leveraging the island's DXCC entity status. The team, comprising Greek and Italian amateur radio operators, utilized the J49I callsign for this specific contest operation. Their efforts contributed to the overall contest results for the 2008 CW segment, with logs submitted reflecting their performance from the European continent.

In this article, K8CU describes his custom design that uses an embedded controller and touch screen LCD panel.

OpenRepeater is a low cost, low power, but feature rich duplex repeater controller suitable for setting up a temporary / emergency repeater systems with radios that can be run on portable power. Download the latest OpenRepeater software for your Raspberry Pi 2/3/3B+/4. This image contains everything you need to get up and running quickly.

Helps you study for the Ham Radio & FCC GROL exams. Often times, test questions are worded in ways; that fool you. RadioTelephone Tutor drills on missed questions, till you know the answers backwards and forwards. Can take entire question pools in straight, or random order. Creates a practice test; which represents what you would be given in a real exam.

Wide selection of quality, affordable shipping cases including stock and custom, heavy duty, pelican protector, removable top, wheeled, ATA, and more!

Consider installing a stealth vertical loop antenna if you live in a place with no antenna restrictions. Full wave loop wire antennas allow you to be on the air without installing evidente external aerials.

Windows shareware contest log program for the ARRL 160 meter contest

If you like building good antennas, this one is for you. The J-pole is a slim, omnidirectional, half-wave antenna fed at the end through a quarter-wave shorted transmission line. Its predecessor is the famous Zepp antenna developed for the Zeppelin airship.

An operating guide for the com IC-2720H VHF/UHF Radio, includes Turning the power On or Off, Selecting the Output Power, Activating Memory Mode, Operating in Memory Mode

GW6ITJ articles on morse code, learning techniques, clubs and organizations and a custom learning software.

A tower grounding project using copper tubing to help protecting an antenna tower by WD0M

Paladin Contest Club Homepage

TEAC is an ARRL Affiliated Amateur Radio Club serving the Northeast area of Harris County including Humble, Kingwood, Atascocita, Huffman, Porter and surrounding areas.

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

Electrical and electronics online calculators by Calculatoredge.com

Review of 6 QRP CW transceivers by AE5X published in QST December 2000

John Shannon, K3WWP article on basics of learning morse code using a straight key.

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

This blog is devoted to my station and all of my radio activities

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.

Free forum Nottinghams own ukcb forum, all posts are CB radio related and are part of the ukcb.tripod.com website

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.

Amateur radio map of Italy with WW locators, provinces abbreviations and Call sign Prefixes, in a A3 size PDF file free to download, made available by IU3KJL Davide

Using Chokes and Traps: how to make them, how they work.

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

A simple DIY project to have a remote cw key connected to your Rig. On the remote side it uses and Arduino Uno board and a cheap HanRun Enc28J60 ethernet shield. On the local side it uses a Morse Key connected to a serial port.

Serving the Big Bend area of west Texas

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

Modifications to an Ameritron ALS 600 power amplifier by AF6SA

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

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.

SM2CEW article on JT65 Deep Search feature

D-STAR repeaters in Hawaii

A nice article expleraing why during the sunset it's possible to listen to long distance radio broadcasting stations.

VX-170 at rigpix

A quad turnstile consists of two cubical quad loops oriented in a diamond configuration and angled 90 degrees apart from one another with both diamonds sharing the same top and bottom points

Links to CW related pages

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

An external base for this nifty little paddle by Elecraft

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

Europeam perspective on BPL PLC

How to restore conductivity to your rubber membrane buttons by KV5R

Myths and information about ladder line by KV5R

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)