Hume Center Director of Research Robert McGwier (right) and research associate Zachary Lefke are building radio antennas that will be used in the Virginia Tech Ground Station. Photo Credit: Virginia Tech
Conventional lines of communication can be impacted after a disaster. This we know. Phone lines can go down, cell service can be overrun with calls, texts, and emails and it can be difficult for survivors as well as first responders to get in touch. This isn’t a far-fetched scenario or intellectual exercise. It’s a reality we’ve seen happen over and over during disasters small and large.
Enter Amateur Radio—or what those involved in the hobby refer to as “ham radio.”
Amateur radio enthusiasts—or “hams” as they’re often called—often step in during emergencies to help bridge communication gaps between first responders to keep people safe when smartphones, cell towers, and internet technologies we rely on every day go down. Volunteer hams also serve as a valuable source of information during the initial states of an emergency. Often, hams provide this public service in association with volunteer groups like Community Emergency Response Teams, who are always ready to spring into action quickly and effectively.…..READ MORE
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From Emily Calandrelli—host of Xploration Outer Space, correspondent on Bill Nye Saves the World, and graduate of MIT—comes the first novel in a brand-new chapter book series about an eight-... Read more
“Recently licensed radio amateurs who have been working hard to improve their Morse code proficiency will have a great opportunity to put their improved skills to use on December 21, w... Read more
The third public test of FT8 DXpedition Mode on May 5 is being called a success. The goal of the exercise was to simulate a rare DXpedition pileup on FT8 by having many stations (“Hounds”) c... Read more
Amateur Radio volunteers are providing communication support to American Red Cross shelters in Sevier County, Tennessee. Wind-driven flames and embers from the Chimney Top Fire in Great Smok... Read more
ACOM HF Power Must-have Amateur Radio equipment for DXers and contesters. ACOM has built a reputation among Amateur Radio operators for its high performance RF power amplifiers. Now,... Read more
Objective: For Amateurs worldwide to exchange information with W/VE amateurs on 160-meter CW. DX-to-DX QSOs do not count for contest credit. Stations located in overseas and non-contiguous U... Read more
Those interested posting brief comments on Petitions for Rulemaking (PRMs) to the FCC, such as the ARRL Technician Enhancement proposal (RM-11828) using the Electronic Comment Filing System... Read more
Icom revealed their first Software Defined Radio (SDR) HF transceiver, the IC-7300, on Saturday, August 22nd 2015, at the Tokyo Ham Fair. The IC7300 sports HF+6m+4m coverage, i... Read more
Here we take a look at the RS-HFIQ 5 Watt HF SDR Transceiver by HobbyPCB. The RS-HFIQ is an open-source HF transceiver project designed to translate I and Q baseband signals to RF in the 80/60/40/30/20/17/15/12/10M Amateur Radio bands. The I and Q signals must be provided/processed by external signal processing which could be a PC running Software Defined Radio software or a stand-alone digital signal processor The receiver in the RS-HFIQ consists of 5 band-pass filters to reject out-of-band signals, an LNA with frequency dependent gain and a conventional quadrature down-converter. The transmitter in the RS-HFIQ uses a Quatrature up-converter followed by the same band-pass filters used by the receivers, a 5W power chain and a low-pass filter bank. The Local Oscillator is based on a Silicon Labs SI5351 chip that can product up to 3 RF outputs, the LO signal for the up/down-converter, a built-in test signal for calibrating I and Q offsets and an external signal. The control of the SI5351 and all switching functions is provided by an Arduino Nano running open-source software and programmed with the Arduino IDE. Special care has been taken to insure noise and ground-loop set-up. The RS-HFIQ has three separate DC isolated ground planes; RF/Chassis ground, Baseband/Audio ground and Digital ground. This allows the same PC to be connected to the audio in/out and the USB port on the Arduino Nano without creating noise/grounding issues. 5W not enough power? Add a HARDROCK-50 to your station to boost up to 50W. The RS-HFIQ and HARDROCK-50 seamlessly integrate together for a powerful base station! The RS-HFIQ is NOT a stand-alone transceiver, it is a part of a Software Defined Radio system. The SDR system consists of: While many different configurations are possible and even encouraged, we have developed a ‘standard’ configuration that will help users new to SDR’s go up and running quickly. To get on the air with the RS-HFIQ in the standard configuration you will need: Visit the RS-HFIQ Transceiver Wiki for more information.
QCX-mini: a feature-packed, high performance, single-band 5W CW transceiver kit, with WSPR beacon and built-in alignment/test equipment. Available for... Read more
In this video we’ll show you how to use your computer, SDR dongle and some free software to add a panadapter display to your older, non-display... Read more
The ACOM 3x2000A The ACOM 3x2000A is a HF power splitter / combiner which is a passive device designed to sum the outputs of three HF linear am... Read more
The M-1 Reference Microphone is the ultimate, high-quality, innovative desktop microphone, dedicated to the most discriminating Ham Radio Operators. I... Read more
XIEGU G1M [Entry Level QRP Transceiver] – With receiving 0.5-30 MHz generally and transmitting capabilities on four popular amateur radio bands,... Read more
MONDAY, 28 MARCH 2016 “After 2 days aboard the « Antsivia » and almost 2000 qso as /MM, we are now achored near Juan de Nova. As our documents i... Read more
The BLA 600 is a wideband compact, fully automatic 500W wideband linear amplifier for the HF bands and 6m, from 1.8 to 54 MHz. Totally ideal for runni... Read more
Frequency: 7, 14, 21, 28 MHz Number of elements: 7 MHz – 3 el. 14 MHz – 4 el. 21 MHz – 4 el. 28 MHz – 6 el. Gain dBd: 5,8... Read more
One antenna, 4 Elements on 10, 3 Elements on 12, 3 Elements on 15, 3 Elements on 17, 3 Elements on 20, 1 Element on 30 Meters and 3 Elements on 40 Met... Read more
Here’s a link to find your declination: http://www.ngdc.noaa.gov/geomag-web/ Request an Azimuthal Map by NS6T Read more
A corner reflector antenna is a type of directional antenna used at VHF and UHF frequencies.It was invented by John D. Kraus in 1938.[3][4] It consist... Read more
This 40 and 80 meter inverted V antenna is made with loading coils. It is a full size antenna on 40 meters and a shortened 80 meter antenna. The anten... Read more
The QTH Locator App was developed for HAM Radio use. This is the extended version of “Maidenhead Grid Locator” using Google Maps to show a... Read more
What is APRSdroid? APRSdroid is an Android application for Amateur Radio operators. It allows reporting your position to the APRS (Autom... Read more
The STARWAVES DRM SoftRadio allows you to conveniently enjoy any DRM live radio broadcast on your Android smartphone or tablet. No Internet connection... Read more
CommCat 4 is a radio control and logging program for radio amateurs who share a passion for talking to other hams around the world. CommCat works with... Read more
This app answers the two basic questions facing radio amateurs:- Which band shall I use ? Where shall I point my beam ? It will be of interest to an... Read more
POWER POLE DC OUTLET – MFJ Read more
Call: ZF2MJ Operator(s): N6MJ Station: ZF1A Class: SOAB HP QTH: ZF Operating Time (hrs): 48 Location: Other North America Radios: SO2R Summary: Compare Scores Band QSOs Zones Countries 1... Read more
The January issue of Digital QST is now available! If you are an ARRL member, you can start reading at http://www.nxtbook.com/nxtbooks/arrl/qst_201501/ QST celebrates the first month... Read more
“After I became a licensed amateur radio operator in August of 1995, I received a QST magazine which had an article that explained it was possible with the right antenna, the Quadrifil... Read more
Coax Cable Stripping Tools DX Engineering DXE-UT-8213LR Coax Cable Stripping Tools have been designed to properly prepare coaxial cable for use with solder-type PL-259 connectors. The... Read more
Wire Antenna, Assembled, Multi-Band, Non-resonant, 150 W, UHF Male, PL-259, 80.3 ft. Length, Each Wire Antenna Band Wire Antenna Frequency 160 meters 1.8 MHz 80 meters 3.5 MHz 60 meters 5.3... Read more
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![Icom IC-7300 Morse Code and Display Overview [ Video ]](https://qrznow.com/wp-content/uploads/2015/08/ICOM_IC7300_RADIO-190x122.jpg)
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Specifications
Requirements
Review
The QCX-Mini 20m QRP Rig Kit Arrives
![Using RF Gain Control On HF-Less Ear Fatigue [ Ham Radio Basics ]](https://qrznow.com/wp-content/uploads/2017/01/iaPwF-265x168.jpg)
USING AN RTL-SDR AS A PANADAPTER WITH AN AUTOMATIC ANTENNA SWITCHER
Equipment
The ACOM 3x2000A
M-1 Yaesu Reference Microphone
XIEGU G1M HF TRANSCEIVER | QUAD BAND | PORTABLE SDR | QRP | 5W SSB CW AW
![FT4JA [ Video ] Juan de Nova 2016](https://qrznow.com/wp-content/uploads/2016/04/11429_500808753460847_6382127601640217191_n-265x168.jpg)
FT4JA [ Video ] Juan de Nova 2016
RM Italy BLA-600 Review with Martin Lynch
Antenna
Antenna Yagi 17 elements 4 bands – GPX Antennas
Mosley PRO-67-C-3 – HF Antenna
How To Orientat A Beam Antenna– Beam Headings
Corner reflector antenna
Coil-loaded 40/80 Meter Inverted V Dipole Antenna by KG0ZZ
App - Mobile
QTH Locator Droid – Mobile App
APRSdroid – APRS for Android
STARWAVES DRM SoftRadio App for Android now available!
CommCat 4 for Radio Control and Logging!
WSPR World Watch v2 – Andorid APP – Propagation Tool
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