Monday, August 16, 2010

IONOSPHERIC DISTURBANCE

The C4-class solar flare of Aug. 14th bathed Earth's upper atmosphere in X-rays and caused a wave of ionization to sweep over Europe. This improved the propagation of low-frequency radio signals which use the ionosphere as a reflector to skip over the horizon. A SID monitor operated by Jan Karlovsky of Hlohovec, Slovakia, recorded the effect:

"SID" stands for Sudden Ionospheric Disturbance, and a "SID monitor" is a radio receiver that monitors ~20 kHz signals from distant transmitters. "My system easily detected the effects of the solar flare," says Karlovsky. "I monitor two stations: DHO38 in Germany (23.4 kHz) and GQD in Great Britian (22.1 kHz). The German signal was most strongly boosted."

With solar activity on the rise, sudden ionospheric disturbances will become more common. Interested? Stanford University tells you how to build your own SID monitor.


source

Sunday, August 15, 2010

CME/ Glancing Blow to Earth's Magnetic Field Aug. 17.


The sun has produced three bright coronal mass ejections (CMEs) this weekend. None is heading directly for Earth, although the CME of Aug. 14th might deliver a glancing blow to Earth's magnetic field on August 17th.
SOHO captured this video clip of a full halo coronal mass ejection (CME) that blasted a substantial cloud of particles away from the Sun (Aug, 7, 2010). The majority of the cloud went to the left with only a smaller portion heading to the right, suggesting that it would not likely have any strong impact on Earth. A “halo” cloud is one that appears to surround the Sun on all sides as it expands, meaning it is heading somewhat towards Earth or away from it. The still and movie are generated by processing the changes from one frame to the next to highlight those changes, thus, we call this a “difference movie.” Click Here

Saturday, August 14, 2010

SUNSPOTS ERUPT IN TANDEM

Today at 1005 UT, magnetic fields connecting sunspot 1093 and 1099 erupted, producing a two-sunspot solar flare (C4-class) and hurling a huge blob of plasma into space. Click on the image to launch a Solar Dynamics Observatory (SDO) movie of the event:

The explosion lasted for more than two hours, giving many amateur astronomers time to catch the eruption in action. Other than photo-ops, however, this explosion will probably not affect Earth much. The cloud ejected by the blast is not heading our way.

Wednesday, August 11, 2010

KD8BIG Update

The last 4-5 weeks have been a struggle for me. After having an upper respiratory infection turn into Bacterial Pneumonia that lingered on for ever I ended up with other health issues this last Friday evening. So I have missed out on a lot since then.
I did however make it to the local amateur radio club meeting and talked to those present about my idea of having a tech net.
How about the activity on the Sun? Wow, very kewl~
I thought I would share this link, it has some really awesome pictures of the Auroras this week due to the activity going on the Sun.

Huge Solar Storm Triggers Unusual Auroras


Tuesday, August 3, 2010

Cosmic Tsunami on the way


A dream come true for the Amateur Radio Operator.
Tonight the bands are really active. I have made contacts on 2, 6, 10, 15, 20 and 40 meters. I tried to make a contact on 80 and 160, no joy.

Solar Tsunami to Strike Earth

Friday, July 30, 2010

Building a Weather Satellite Station

Check out the section on assembling a low cost, easy-to-build ground station to receive weather satellite images.

No ham radio license or special training needed.

Just need a computer with a sound card, a short-wave receiver, and some tracking and decoding software.

You don't need a ham radio license and transmitter to participate in space radio. Monitoring of radio transmissions is a popular hobby of its own. You can listen in on satellite downlinks and shuttle communications with police scanners and shortwave radios, available at your local electronics store.

(Listening in on manned spaceflights began early in the space age. This article The first 'scoop' from space in 1999 by John Rich at the Christian Science Monitor reports on NBC reporters eavesdropping on Gordon Cooper's communications while he was in space on Mercury Faith 7.)

You can also directly capture weather satellite images and other satellite signals using radio and computer kits.

A related hobby involves reception of Natural Radio signals produced by atmospheric phenomena such as lightning and aurora. VLF (Very Low Frequency, less than 500HZ) signals from the magnetosphere can be detected from as far as 20000 miles above the earth. When these signals are converted to audio, an assortment of unique sounds such as whistlers and sferics can be heard.

Amateurs even do Radio Astronomy with homemade systems. They can carry out a wide range of observations ranging from listening to electromagnetic storms on Jupiter to picking up pulsar signals to searching for ET signals.


source

Monday, July 26, 2010

VX-8DR; Looking to Purchase

Why another radio? Why not?
Yes, I am looking at purchasing the VX-8DR by Yaesu.
I have the VX-7R and love it. It has been a great radio for me and dose everything I want it too. The only issue is as of late I have had some audio issues. When I adjust the volume knob I get some crackling and also get crackling when not adjusting the volume. I put the radio on the MFJ-269 and everything looks great. So I guess my HT is getting old. Besides, the VX-8DR looks much cooler than the VX-7R and I really want to get back into working the satellites.
The VX-8DR has some really nice features that the VX-7R dose not has. It is also a thinner rig from what I have heard.
I guess my quest for the Kantronics XL and the Rig Blaster Pro might sit on the back burner, then again, so many decisions to think about.

BTW, The Yaesu VX-8DR is an APRS® enhanced version of the popular VX8R. Key additional features of the VX-8DR include:
*Smart Beaconing Function.
*Station List memories has increased from 40 to 50.
*The number of APRS® Message Memories has increased from 20 to 30.
*DIGI-PATH route indication function.
*Heads up compass display to the GPS screen.
*The Message received LED flashing rate is selectable.
*The number of DIGI-PATH route settings has increased from 1 to 7.

The Yaesu VX-8GR is the newest member of the proud VX-8 family. The VX-8GR dual-bander only covers 2 meters and 440 MHz and receive coverage is 108-999 MHz (less cellular frequencies). This version has a built-in GPS unit right out of the box! It is not Bluetooth capable. Click here for Yaesu VX-8GR info.!
The VX-8R, VX-8DR and VX-8GR come with the SMA antenna, FNB-101LI Lithium Ion battery pack (7.4V 1100 mAh), belt clip and NC-86B battery charger. (The NC-86B should only be used for receive, because it is not capable of supplying sufficient current to support transmit).

source

Thursday, July 22, 2010

Scott Allan Herrick Alert

Scott Allan Herrick, 39, is charged with videotaping boys in the locker room at the YMCA. He also was charged with two counts of distributing child pornography and one count of possessing child porn.
He looks at only getting a maximum of 170 years in prison, fines of $1,750,000 and restitution.

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Tuesday, July 13, 2010

SunSpot 1087

Sunspot 1087 has a magnetic canopy that can only be described as magnificent. It's on full display in today's extreme ultraviolet image from the Solar Dynamics Observatory:


Note the inset. The active region could swallow our planet ten times over and still have room to spare. Fortunately, we're 93 million miles away. We could still feel the effects of an eruption, however. The thicket of magnetic loops and filaments harbors energy for M-class solar flares. M-flares can heat and puff up Earth's upper atmosphere, causing satellites to experience extra drag as they orbit our planet; they can also cause waves of ionization to ripple around the planet, disrupting radio communications. There haven't been any big eruptions yet, but the magnificent magnetic field of sunspot 1087 has been restless, as shown in this time-lapse movie spanning four days.

NOAA forecasters estimate a 10% chance of M-flares during the next 24 hours. Readers with solar telescopes are encouraged to monitor developments.

source

Monday, July 12, 2010

Satellite Tracking Software

I have worked many Satellites since I became an Amateur Radio Operator. Anyways,my favorite software to use is Nova for Windows or NLSA, which has become the most popular Windows-based satellite tracking program in the world. In use by NASA, the U.S. Air Force, industry, and thousands of amateur radio operators, Nova sets the standard for excellence.

Here is a list of some of the most popular software.

  • Footprint - Satellite tracking program
  • Nova For Windows - Real time tracking of an unlimited number of satellites, fast, accurate and easy to use. Automated FTP keps updates. Also support a great number of interface to control rotors azimuth and elevation plus frequency doppler shift.
  • AMSAT Software links - Links for Satellite tracking software and other Satellite information.
  • Real Time Satellite tracking - Select your favorite satellite and watch its trajectory on Google Maps in real time! Includes ISS tracking, Weather, Geostationary, GPS Military, and of course Amateur radio satellites
  • J-Track - With J-Track you can quickly and easily keep track of your favorite orbiting objects.
  • TrakSat WinTrak - Wintrak and traksat, satellite tracking software
  • Winorbit - Satellite Orbital Prediction and Satellite Tracking
  • GorbTrack - GorbTrack or Geostationary Orbit Tracker is a freeware program intended to be an aid in finding geostationary satellites. It produces output helpful in aiming dishes for receiving television broadcast satellites. The program also displays several astronomical values like the positions of the sun and moon
  • WXtrack - Predict the tracks of weather satellites both as paths above the earth, and as images produced by these satellites when scanning the ground.
  • Visual Moon Tracking - Java moon tracking software runs on LINUX, Win 98, Win NT, UNIX, OSF, MacOSX
  • FODtrack Satellite Tracking Interface - Construction tips to build an automatic``satellite tracking rotor controller using``PIC16F877 IC.
  • FUNKBOX Hard&Software - Useful hardware & software for SAT tracking ,logging, Software defined transceivers for SDR and more
  • Big Fat Tail Productions - PocketSat is a full-featured satellite tracking application for PalmOS and PocketPC devices. It is designed to be usable by both experienced satellite trackers as well as novices who are interested in knowing when they can simply look up and see satellites.
Satellites I have worked;

ISS, AO-7, UO-11*, UO-14, AO-16*, LO-17*, UO-22, AO-27, FO-29, GO-32, AO-40, SO-41, NO-44, NO-45, SO-50, AO-51, VO-52, XO-53*, CO-55*, CO-56*, CO-57*, CO-58*


source

Sunday, June 20, 2010

FATHER'S DAY BLAST

Consider it a Father's Day gift ... from the sun. This morning around 1 a.m. UT, magnetic fields on the sun's eastern limb became unstable and erupted, producing one of the most spectacular explosions of the year. NASA's Solar Dynamics Observatory recorded the action:

Click to play a 1.6 MB mpeg movie

The explosion did not cause a solar flare (a flash of electromagnetic radiation) but it did hurl a massive cloud of magnetized plasma into space: SOHO movie. Because of the blast site's location on the eastern limb, the cloud will not hit Earth. There won't be any geomagnetic storms or auroras. Future eruptions, however, could have greater effect.


source

Monday, June 14, 2010

Mystery on Jupiter

This is an interesting article. I recieved this in several e-mails.

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 5, 2010

The Sun becomes active; NASA is Wary

The sun is waking up from a deep slumber, and the next few years could bring much higher levels of solar activity. NASA is keeping a wary eye on the sun as officials meet in Washington DC on June 8th to discuss the potential consequences of stormy space weather. Get the full story from Science@NASA.

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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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