Monday, June 14, 2010
Mystery on Jupiter
Jupiter Impact: Mystery of the Missing Debris - On June 3rd, 2010, something hit Jupiter. A comet or asteroid descended from the black of space, struck the planet's cloud tops, and disintegrated, producing a flash of light so bright it was visible in backyard telescopes on Earth. Soon, observers around the world were training their optics on the impact site, waiting to monitor the cindery cloud of debris which always seems to accompany a strike of this kind. They're still waiting.
"It's as if Jupiter just swallowed the thing whole." "It was thrilling to see the impact, but the absence of any visible debris has got us scratching our heads." Indeed, it is a bit of a puzzle. "We've seen things hit Jupiter before, and the flash of impact has always been followed by some kind of debris." So where is the debris this time?
A possibility offered by some observers is that the flash wasn't an impact at all. Maybe it was a giant Jovian lightning bolt. But "NASA spacecraft have seen lightning on Jupiter many times before, but only on the planet's night side. This day side event would have to be unimaginably more powerful than any previous bolt we've seen. Even Jupiter doesn't produce lightning that big."
Curiously, the impactor (if indeed this was an impact event) struck right in the middle of Jupiter's South Equatorial Belt (SEB), one of the two broad stripes that girdle the planet. This is "curious" because the SEB itself vanished earlier this year. The missing belt may still exist, just temporarily hidden underneath some high-altitude cirrus clouds.
The best remaining hypothesis is that the impactor was small, packing just enough punch to make a flash, but without leaving much debris. One thing is sure: "JUPITER IS GETTING HIT MORE THAN WE EXPECTED. Back in the days of Shoemaker-Levy 9 (SL-9), we calculated that we should see an impact on Jupiter once every hundred years or so. We considered ourselves extraordinarily lucky to witness the SL-9 event. But look where we are now. Anthony Wesley has observed two impacts within the past 12 months alone. It's time to revise our impact models
Saturday, June 12, 2010
Saturday, June 5, 2010
The Sun becomes active; NASA is Wary
Wednesday, June 2, 2010
MAARC/W8ZHO 2 meter net
Net Start;7pm. Net Conclusion;7:50pm = 50 minutes
KD8BIG NCS
W8QAY
W8KID
KD8FBY
KD8YL
KC8PCJ
Question Pool
When Samuel Morse developed a system of dots and dashes (the Morse Code), where did he find out which letters were used more often than others?
The Bible The Dictionary (X) A newspaper
He went to a newspaper printer's office so he could see which letters were used most often.
VE question=G2E04
Which of the following 20 meter band segments is most often used for most data transmissions?
1-14.000 - 14.050 MHz .
Yes 2-14.070 - 14.100 MHz .
3-14.150 - 14.225 MHz .
4-14.275 - 14.350 MHz .
Training Topic.
The RST Reporting System
I did a review on RST and discused the history of it.
Wednesday, May 19, 2010
MAARC/W8ZHO 2m Net
Read some of the Amateur News that was posted on QRZ.
Net start time was 7pm
Closed Net at 8:03
KD8BIG- NCS
Check-ins;
W8QAY
W8KID
KC7NEC
KD8FBY
W8LGP
W8SWX
N9AUY.
ANNOUNCEMENTS;
Board Meeting
Thursday May 24, at 7:00 PM
at the Clubhouse
Club Meeting
Thursday June 3, at 7:00 PM
at the MAARC Clubhouse
Program: Field Day by NA8M
also
Special Guest Speaker: Scott McNeill
on 501c3/501c7 tax status.
VE Test Session
Saturday, June 12, at 9:00 AM
Clubhouse Cleanup Party May 22, 11am - 5pm
Operation Care 2010
W8ZHO
Operation Care 2010 Managers
Wednesday, May 12, 2010
BIG TWISTER
Movies: Quicktime Large (26MB), Small (4MB); MPEG Small (7MB)
The time-lapse movie spans three days, April 30th to May 2nd, and shows not only the big twister, but also many smaller filaments that twist and swirl without erupting. Such activity occurs every day and is part of the dynamism of the ever-changing sun.
More great movies from STEREO may be found here.
Monday, May 10, 2010
New Kenwood Rigs.
Website: http://www.kenwood.co.jp/en/news/2010/20100507.html
Launch of New Amateur Radio Products:
Kanagawa, Japan, May 7, 2010 — Kenwood Corporation, an operating company of the JVC Kenwood Group, is proud to announce the autumn/winter launch of two new Amateur Radio transceivers: the TS-590S and TH-D72.
HF/50MHz All-Mode Transceiver - TS-590S (tentative naming)
Featuring a 32-bit floating-point DSP, the TS-590S will offer advanced receiver performance and an extensive range of features that make it ideal for beginner and seasoned DX’er alike. The radio’s exceptional ease of operation, true to the Kenwood tradition, will be especially welcome for contest and mobile applications.
144/430MHz Dual Band FM Portable - TH-D72 (tentative naming)
The APRS® capability found on Kenwood’s TH-D7* and TM-D710 has been upgraded for the TH-D72. Thanks also to the internal GPS unit, APRS operations will be more enjoyable than ever. The TH-D72 also offers EchoLink® memory compatibility and a mini-USB connector for enhanced computer connectivity. This transceiver is sure to make ham radio operations easier and more fun for all.
* For overseas model/Discontinued model
Anyone interested in these two models will be able to view product samples at: Dayton Hamvention 2010 (Dayton, Ohio, USA, May 14-16), and HAM RADIO 2010 (Friedrichshafen, Germany, June 25-27).
Please note that as these products are under development features and specifications are subject to change without notice.
APRS is a registered trademark of Bob Bruninga in the USA.
EchoLink is a registered trademark of Synergenics, LLC in the USA.
For further information, please contact:
Advertising and Publicity, Strategic Corporate Planning Division, JVC KENWOOD Holdings,Inc.
Tel: +81-45-444-5306 Fax:+81-45-444-5319 E-mail: pr.qa@kenwood.co.jp Or contact your local Kenwood PR representative in your country
Thursday, May 6, 2010
National Day of Prayer
History of the National Day of Prayer
1775 The First Continental Congress called for a National Day of Prayer.
1863 Abraham Lincoln called for such a day.
1952 Congress established NDP as an annual event by a joint resolution, signed into law by President Truman.
1988 The law was amended and signed by President Reagan, to be the first Thursday in May.
2010 U.S. District Judge Barbara B. Crabb ruled that the National Day of Prayer is "unconstitutional."
Tuesday, May 4, 2010
New Vertical Antenna
My friend KI8UM will be purchasing one of the antennas soon and I will do a product review.

http://www.s9antennas.com/index.html
Monday, May 3, 2010
Monday Humor
A woman was standing nude, looking in the bedroom mirror. She was not happy with what she saw and said to her husband, "I feel horrible; I look old, fat and ugly. I really need you to pay me a compliment.' The husband replied, 'Your eyesight's perfect.'
Friday, April 23, 2010
Goings On
One of those weeks, ambulance ride to the hospital on Monday morning, more doctors and test and lots of sleep. Waiting on surgery date to be rescheduled, should know by Monday afternoon. I am hoping the Red Wings will give me a win tonight.
Follow me on FaceBook and Twitter.Monday, April 19, 2010
Monday Humor
My wife sat down on the sofa next to me as I was flipping channels. She asked, 'What's on TV?'I said, 'Dust.'
Sunday, April 18, 2010
Amateur Radio Software.
I think I may purchase it. It was simple to use and made contesting easier when having to log contacts.
HOW TO READ PROPAGATION NUMBERS
The A index [ LOW is GOOD ]
- 1 to 6 is BEST
- 7 to 9 is OK
- 11 or more is BAD
Represents the overall geomagnetic condition of the ionosphere ("Ap" if averaged from the Kp-Index) (an average of the eight 3-hour K-Indices) ('A' referring to amplitude) over a given 24 hour period, ranging (linearly) typically from 1-100 but theoretically up to 400.
A lower A-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Ap-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
SFI index [ HIGH is GOOD ]
- 70 NOT GOOD
- 80 GOOD
- 90 BETTER
- 100+ BEST
The measure of total radio emissions from the sun at 10.7cm (2800 MHz), on a scale of 60 (no sunspots) to 300, generally corresponding to the sunspot level, but being too low in energy to cause ionization, not related to the ionization level of the Ionosphere.
Higher Solar Flux generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; Solar Flux rarely affects the 30, 40, 60, 80, & 160 Meter Bands.
K index [ LOW is GOOD ]
- 0 or 1 is BEST
- 2 is OK
- 3 or more is BAD
- 5 is VERY VERY BAD
The overall geomagnetic condition of the ionosphere ("Kp" if averaged over the planet) over the past 3 hours, measured by 13 magnetometers between 46 & 63 degrees of latitude, and ranging quasi-logarithmically from 0-9. Designed to detect solar particle radiation by its magnetic effect. A higher K-index generally means worse HF conditions.
A lower K-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Kp-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
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