News Feeds
Massachusetts ARES Prepares as a Now-Weakened Hurricane Earl Approaches
Robert Macedo, KD1CY, ARES SKYWARN Coordinator and Eastern Massachusetts ARES Section Emergency Coordinator, provided this report on the afternoon of Friday, September 3:
The following is a situation report from the Eastern Massachusetts ARRL Section on Hurricane Earl. The good news is that Earl has weakened to a Category-1 hurricane. The other good news is that its track remains on target with ...
New Interim Chief Takes Over Air Force MARS
The Air Force Military Auxiliary Radio System (MARS) organization has a new “interim” Chief. Outgoing USAF MARS Chief Allen Eiermann, K3LSR, retired at the end of May and was replaced by TSgt Jason E. Sandifer. Sandifer is a systems manager stationed at the Air Force Network Integration Center (AFNIC) at Scott AFB, Illinois. AFNIC is the headquarters of the national Air Force MARS organization...
The K7RA Solar Update
Over this past week, four new sunspot groups appeared. Group 1101 was already in place since August 24, and 1102 emerged on August 29. On September 1, two new sunspot groups -- 1103 and 1104 -- appeared, and on September 2, sunspot group 1105 arrived. Through August 26-September 2, the daily sunspot numbers were 23, 11, 11, 25, 28, 27, 51 and 52 and these same eight days saw the relative total ...
Surfin’: Hurricane Hamming
By Stan Horzepa, WA1LOU
Contributing Editor
This week, Surfin’ makes plans for emergency communications of the hurricane variety.
As I write this, Connecticut and the Northeast are looking down the barrel of Hurricane Earl. It looks like my neck of the woods will only receive a glancing, but powerful blow, but points south and east of us will not be so lucky.
Having lived through direct hits fro...
Bobtail dipole
Antennas/Wire
Bobtails are vertical arrays that look like the letter "E" turned 90° clockwise onto its tails. They have 3 quarter wave vertical elements and are one wavelength long. The Half Square is a shortened Bobtail- it has 2 quarter wave vertical elements and is a half wave long.
Bobtails are vertical arrays that look like the letter "E" turned 90° clockwise onto its tails. They have 3 quarter wave vertical elements and are one wavelength long. The Half Square is a shortened Bobtail- it has 2 quarter wave vertical elements and is a half wave long.
Helical Antennas
Antennas/Helical
The Helical antenna description, a simple way of obtaining high-gain and a broad band of frequency characteristics
The Helical antenna description, a simple way of obtaining high-gain and a broad band of frequency characteristics
DF9CY Softrock tests
Technical Reference/Software Defined Radio
Softrock Version 6.1 Software Defined Radio experience and modifications by DF9CY
Softrock Version 6.1 Software Defined Radio experience and modifications by DF9CY
Hurricane Earl Heading for North Carolina, Hurricane Warnings Issued for New England
Hurricane Earl -- once again a Category 4 storm -- is currently aiming for North Carolina’s Outer Banks. At 11 AM (EDT), Earl is located about 300 miles south of Cape Hatteras and 765 mles south of Nantucket Island, just off the coast of Massachusetts. Earl is now moving north at a speed near 18 MPH, and is expected to turn north-northeast with an increase in forward speed on Friday. The center...
New D-STAR Repeater Now in Place in ARRL Laboratory
The ARRL Lab has installed a D-STAR (Digital Smart Technologies for Amateur Radio) repeater in the Lab at the ARRL Headquarters building. Operating with an output of 147.390 MHz, positive offset, the W1HQ D-STAR repeater is a local repeater with a modest footprint covering the Hartford-New Britain, Connecticut area. The antenna is on the roof of the Headquarters building with the repeater locat...
Earl Possibly to Upgrade to Category 4 Storm, US Atlantic Coast on Alert
On August 30, Hurricane Earl intensified into a Category 4 hurricane -- sustained winds 131-155 MPH -- before leveling out back into a Category 3 storm. But even as a Category 3 hurricane, Earl is still a major storm with hurricane-force winds extending outward up to 90 miles from the center, and tropical storm force winds extending outward up to 200 miles. According to the National Hurricane C...
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