OSCAR News - August, 2Ø11
The next OSCAR meeting is 13-Aug @ 9:00 AM, the second Saturday of the month. Meetings are held in the meeting room at the Owatonna HyVee, 18th Street @ Oak Avenue.
The next SKYWARN meeting is 16-Aug @ 7:00 PM, the third Tuesday of the month. Meetings are held at the Owatonna Fire Station.
John KDØNTB SK
Many in the community are saddened to learn of the unexpected death of John KDØNTB on Tuesday, 26-Jul. Our thoughts are with son Harrison KDØNTA and all of the Kuhn family. John and Harrison earned their licenses in 2011 and participated in SKYWARN.
The Steele County Free Fair opens 16-Aug and runs through 21-Aug. Last year the volunteer groups were set up in the Community Center, which did not have a good response. The mass casualty trailer used in previous years on Safety Alley will return for volunteer groups to staff. SKYWARN, RACES/ARES, and CERT will coordinate together. If you have the ability to spend a couple of hours promoting the volunteer groups at the fair, contact Shirley Woodfill (email@example.com). Shirley is coordinating the master schedule of volunteers across groups.
Fox Hunt Challenge
From Ron K3PID
The members of Stillwater Amateur Radio Association (SARA) would like to invite YOU and your club to accept our 2011 Fox Hunt Challenge on 20-Aug. A good time is virtually guaranteed and if you take a minute to register we will have a map of the hunt area available for you to use (along with coffee and donuts of course ). Additional information can be viewed at SARA web site. You can register by sending an email to firstname.lastname@example.org. Include the name and call of the team leader, a name for the team (optional), and the number of team members you expect to participate. This is just to give us an idea of how many maps and donuts we will need.
MN Sate Fair
From Todd KBØSGH
The 2011 MN State Fair runs from Thursday 25-Aug through Labor Day 05-Sep. The Chanhassen office of the National Weather Service is looking for Amateur Radio Operators and SKYWARN instructors to help staff the NWS booth this year. We need one volunteer to work a four hour shift alongside NWS staff each day. The morning shift is 9:00 a.m. to 1:00 p.m. each day. The evening shift is 5:00 p.m.to 9:00 p.m. each day. The display in the Education Building will include information on individual and family preparedness, weather safety, weather radio, storms, and other topics of interest to fairgoers. The NWS will provide each volunteer with an admission ticket to the fair for each day you work. All other costs will be the responsibility of each volunteer.
If interested, please Todd Krause (email@example.com or 952-368-2554) as soon as possible. We are in the Education Building, very close to the main gate on
From Hamilton KDØFNR
There is a new set of free online FCC ham radio license exam practice tests. There are randomly generated practice exams for all three license classes in the U.S. as well as for the Canadian and New Zealand ham radio exams. Online help topics are provided for many of the exam questions. Users can track their test scores, as well as a count of how many of the question pool questions they’ve practiced over time. In addition to random practice exams, users can automatically practice exams with questions they haven’t seen yet in each subelement group, or questions they haven’t gotten correct in each subelement group.
Bob Heil, K9EID and Gordon West, WB6NOA host the weekly hour long show on ham radio via the
TWiT network. The show is fed live at 8:00 PM on Tuesday. Archivesare available for online viewing or downloading. Joe Walsh WB6ACU (Eagles) wrote and performs the Ham Nation theme song.
From Multiple Sources
Sun spot ccyle 24 had a late start, but is expected to peak in 2012/2013. The November 2010 Newsletter included a story indicating opposing forecasts for the current cycle. Recent US-based studies support the idea that the sunspot cycle may be going into hibernation, unseen since the 17th century. For ham radio, a prolonged solar minimum means very little in the way of High Frequency DX. An extended period without sun spots might lower global surface temperatures. The Maunder Minimum (1645 - 1715) resulted in practically no sunspots. Average temperatures in the northern hemisphere dropped by 2 to 4 degrees F.
Ink Jet Antenna
From Multiple Sources
We know that most of the electrical energy we radiate never makes a connection at the other end. An ultra-wideband antenna on paper can provide an inexpensive method of capturing wasted RF and turning it into useful electricity. RF frequencies ranging from FM radio to radar is converted to DC. Researchers used an ink jet technology with silver nanoparticles to demonstrate the concept, capturing a few microwatts from a TV signal.
From Multiple Sources
The FCC is looking for ways to free up more spectrum in the TV band. One notice of proposed rulemaking (NPRM) seeks to compensate TV stations voluntarily giving up unused spectrum. One of the primary goals is to acquire additional spectrum for wireless services. As part of the commission's national broadband plan, the FCC has committed to freeing up 300 MHz of spectrum over the next five years and 500 MHz of spectrum in 10 years. The FCC's national broadband plan calls for getting up to 120 MHz of spectrum from broadcasters.
From Multiple Sources
Defense researchers are testing a new high-power microwave (HPM) bomb that creates an electromagnetic pulse capable of disabling electronics, vehicles, guided missiles, and communications while leaving people and structures unharmed. The amount of damage depends on
- Frequency - Lower frequencies can jam communications while higher frequencies can burn out the electronics.
- Peak Power - Although testing is being completed with 35 MW, the full system could produce several hundred MW.
- Coupling Ability - Microwaves can enter communication systems through wiring, piping, vents, and other infrastructure. Once inside, they create destructive standing waves in the wiring.
The device is portable enough to fit in a missile or carried in a Humvee or unmanned aerial vehicle. Energy is provided through an explosive in a pipe. A 12-volt battery provides generates a DC magnetic field in a winding of insulated wire around the pipe with explosives. Another pipe surrounds the coil. Detonating the explosive presses the inner pipe against the outer, rapidly squashing the magnetic field and generating a pulse of electromagnetic energy.