|tester||02:43 AM, 25 Oct 2014||45||3.52||Red Sísmica de Puerto Rico||Martes, Octubre 28, 2014||0||0||538|
|tester||03:18 AM, 19 Oct 2014||103||4.02||Red Sísmica de Puerto Rico||Martes, Octubre 28, 2014||0||0||424|
|tester||11:36 PM, 17 Oct 2014||163||3.63||Red Sísmica de Puerto Rico||Martes, Octubre 28, 2014||0||0||379|
|tester||09:04 AM, 14 Oct 2014||66||3.54||Red Sísmica de Puerto Rico||Martes, Octubre 28, 2014||0||0||376|
|tester||09:36 AM, 02 Oct 2014||122||3.70||Red Sísmica de Puerto Rico||Martes, Octubre 28, 2014||0||0||375|
Grounding and Bonding for the Radio Amateur by Ward Silver, N0AX, is now available from ARRL. Proper station grounding is important! Build your ham radio station with effective grounding and bonding techniques for electrical safety, lightning protection, and RF management.
Grounding and Bonding for the Radio Amateur shows you how to make sure your station follows current standards for lightning...
World Amateur Radio Day (WARD) on Tuesday, April 18, will mark the 92nd anniversary of the International Amateur Radio Union (IARU), and radio amateurs around the world will take to the airwaves to celebrate the day in 1925 that the IARU was formed in Paris. “Celebrating Amateur Radio’s Contribution to Society” is the WARD theme.
Amateur Radio experimenters were the first to discover that the sh...
International Girls in Information and Telecommunication Technologies (ICT) Day is April 27. The ITU initiative aims to create a global environment that empowers and encourages girls and young women to consider careers in the growing ICT field, enabling them and technology companies to reap the benefits of greater female participation in the ICT sector.
“Since we launched Girls in ICT Day, we ha...
“Grounding” is the topic of the latest 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 Ford, WB8IMY, and the Doctor himself, Joel Hallas,...
An April 11 article, “Emergency Communications Driving Increase in Amateur Radio Operators,” in Emergency Management magazine links the growth in Amateur Radio numbers to interest in emergency communications.
“There has been a tremendous amount of interest in emergency preparedness since 9/11 and Katrina, and this is true for the Amateur Radio community as well,” ARRL Emergency Preparedness Mana...
At Hamvention® 2017 in Xenia, Ohio, on May 19, 20, and 21, ARRL EXPO will provide a spacious area focusing on ARRL activities. The ARRL Store will be the central focus of ARRL EXPO in Building 2 of the Greene County Fairgrounds and Expo Center, where visitors will be able to peruse and purchase a wide array of ARRL publications, supplies, and official League merchandise. They’ll also be able to...
Solar indicators, both sunspot numbers and solar flux,
both dropped this week, in fact on April 8 there were no sunspots.
Average daily sunspot numbers declined from 65.9 to 16.6, and
average daily solar flux went from 96.5 to 73.8, compared to the
previous seven days, .
Average daily planetary A index went from 15.6 to 10.6, and average daily mid-latitude A index declined from 13 to 9.3.
The Central States VHF Society (CSVHFS) is soliciting papers, presentations, and posters/tabletop displays for its 51st annual conference, set for July 27-30 at the Sheraton Albuquerque Airport Hotel in Albuquerque, New Mexico. The conference is seeking papers, presentations, and posters on all “weak-signal” VHF-and-above Amateur Radio topics. These include:
The FCC has proposed a fine of more than $400,000 on a Queens, New York, man who has admitted making unauthorized transmissions on New York City Police Department (NYPD) radio frequencies, maliciously interfering with NYPD officers’ communications. Peralta, 20, is alleged to have transmitted false bomb threats, false claims of criminal activities involving firearms, false distress calls from pu...
The May/June issue of QEX, ARRL’s bimonthly magazine for experimenters, is off the press and in the mail!
In this issue . . .
Michael Knitter, DG5MK, describes a complex-impedance analyzer that uses a heterodyning technique and high resolution ADCs to get good accuracy at low cost.
Robert H. Sternowski, WBØLBI, uncovers old measurements, which show that vertically and horizontally polarized noise...