ARRL has introduced three new e-books to its growing digital library. The newest titles available in the popular Amazon Kindle format include Work the World with JT65 and JT9 by ARRL author Steve Ford, WB8IMY, ARRL’s Small Antennas for Small Spaces, 2nd edition, and Antenna Physics: An Introduction, by Robert J. Zavrel, Jr, W7SX.
Work the World with JT65 and JT9 shows you how to assemble an effective digital communication station and configure the software for best performance. Some operators use these popular digital modes with as little as 5 watts RF output and an indoor antenna. The book is filled with tricks and tips to help you get on their air making contacts.
The fully updated, second edition of ARRL’s Small Antennas for Small Spaces is a must-have for radio amateurs who live in apartments, condominiums, or houses on small lots. The book is filled with practical advice, and will guide you to finding the right antenna design to fit whatever space you have available.
Antenna Physics: An Introduction was written to bridge the gap between basic theory and graduate-level engineering texts. Delve deeper into antenna theory, and explore the underlying principles, and mathematics, of antennas and antenna physics.
After sophistication and deepening, RF direct sampling has gone further. Far away, DXer pursues a faint signal that reaches from the back of the earth through the ionosphere. The success or failure is divided into the influence of blocking on the proximity strong signal on the reception sensitivity, that is, the RMDR characteristic. The IC-7610 realized an […] Read more
Students of the Samara State Aerospace University are having trouble getting a signal from their satellite, SamSat-218D. They are now reaching out to the radio amateur community, inviting everybody with sufficiently sensitive UHF VHF band (144 MHz) equipment to help by listening to SamSat-218D. The satellite was entirely built by students and went into space on board […] Read more
04/15/2016 There was an upward bump in recent solar activity, with average daily sunspot number for the April 7-13 period at 32 (compared to 19.1 for the previous seven days) and average daily solar flux rising 23 points to 106.1. Note that what we are seeing now is the occasional uptick in solar activity as […] Read more
“Generators” is the topic of the new (June 22) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! Sponsored by DX Engineering, “ARRL The Doctor is In” is an informative discussion of all things technical. Listen on your computer, tablet, or smartphone — whenever and wherever you like! Every 2 weeks, your host, QST Editor-in-Chief Steve […] Read more
“Faraglia Martin, 12, of Villa Lagarina (Trento) has successfully passed the examination for obtaining the license to operate a radio station amateur on December 4, 2014 in the examination session organized by ‘Territorial Inspectorate of Bolzano. Martin is the first young radio amateur of Trentino Alto Adige and the second in Italy after Matthew’s Punzio […] Read more
New 134GHz UK distance record G8KQW and G8ACE are very pleased to report two 134GHz contacts on Sunday, September 20, 2015 The first from Butser Triangle near the summit of Butser Hill above Portsmouth to Lane End to the SE of Winchester. A distance close to the UK distance record of 17.2Km. Signals were exchanged […] Read more
Moonbounce The recent Market Reef OJ0B expedition resulted in 462 contacts via 2 meter Earth-Moon-Earth (EME) and meteor scatter activity with stations on all continents. The activity this month was a somewhat belated 50th anniversary celebration of the historic first 2 meter EME contact. More than 50 US and Canadian hams were among those that […] Read more
CHAMELEON ANTENNA Portable HF Antennas are made with the finest materials available. They can be used for multiple purposes such as Base Station, Portable, Mobile, Marine, EMCOMM, MARS/CAP, ARES, SATERN, RACES, First Responders, Emergency Preparedness, SKYWARN, Military and Government communications and much more. CHAMELEON ANTENNA Portable HF Antennas are very effective antennas for deed-restricted lots […] Read more
Solid State Linear Amplifier 1kW Output High Spectral Purity 460KHz* to 50MHz All Bands Touch Screen Full Colour LCD Display Full QSK Fully automatic Band switching Multiple antenna outputs 0dBm SMA predistortion output Advanced Cooling NXP LDMOS with Full Protection 100-260V 50-60Hz power input Weight 15Kg * With external accessory filter unit The Gemini HF-1K […] Read more
The Tadiran SDR-7200HH is specifically designed for dismounted soldiers, providing them with voice and data communications together with command and control (C2) applications from a variety of sensors. Offering real-time situational awareness on-the-move, multi hop ad-hoc networking and advanced routing of hundreds of users in a network, the system is ideally suited for the platoon […] Read more
The International Amateur Radio Union (IARU) Emergency Telecommunications Guide is now available for download from the IARU website. The guide was developed to provide the IARU member-societies with materials suitable for training radio amateurs to participate in emergencies. It also was designed to provide guidance to individual Amateur Radio operators with little or no experience in handling emergency […] Read more
The Internet of Things (IoT) Institute has named ARRL member Limor Fried, AC2SN, of New York City as one of the 25 most-influential women in the IoT industry. IoT embraces the concept of connecting devices from cell phones to appliances and machine components to the Internet and/or to each other. Individuals were named on the […] Read more
This brand-new EXTIO DLL bring new (cool) features: Remote SDR stream selection (no need to change the configuration file anymore), Remote spectrum display Remote Chat and remote map integration And… tuning the remote SDR with DJControl through Midi interface, following F5OEO idea Read more