Wednesday, February 10, 2010
GPS set for problems from the Sun
The Sun's irregular activity can wreak havoc with the weak sat-nav signals we use.
The last time the Sun reached a peak in activity, satellite navigation was barely a consumer product.
But the Sun is on its way to another solar maximum, which could generate large and unpredictable sat-nav errors.
More...
Tuesday, February 9, 2010
Garmin GPS: Year 2010 bug - possible pitfall for APRS Ops
More...
Friday, February 5, 2010
Huge Snow Storm
Powerhouse snowstorm to wallop the East... Developing...
Watches/Warnings...
RADAR...
Virginia declares state of emergency...
Snow clean-up burden for cash-strapped states...
EARTH-DIRECTED ERUPTION?
The movie shows an eruption of unstable magnetic loops. The blast occured around 0130 UT on February 5th and may have hurled some material in the general direction of Earth. (Our planet is off the right edge of the image.) The Solar and Heliospheric Observatory (SOHO) has a direct view of the blast site and it may be able to help evaluate this possibility.
UPDATE:
There is a gap in SOHO image data spanning the time of the eruption. At present, there is no sign of a major CME heading toward Earth, but a lesser cloud could be en route. Polar sky watchers should be alert for auroras on or about Feb. 8th.
Wednesday, February 3, 2010
Spring 2010 Skywarn Training Schedule
Spring 2010 Skywarn Training
Febuary 20, 2010. Muskegon, MI
9:00am EST.
Muskegon Community College Room 1100 Stevenson Center
221 S. Quarterline Road
Muskegon, MI 49442
Skywarn Training Schedule for Southwest Lower Michigan
Up-Coming Event; AM Transmitter Rally
Building on the success of AM-specific operating events such as the Heavy Metal Rally, 1st Wednesday AM Night, and the Antique Wireless Association's Amplitude Modulation QSO Party, organizers announce the AM Transmitter Rally taking place February 6 on 160-10m using 'standard' Amplitude Modulation.
The purpose of this event is to encourage the use of Amplitude Modulation on the Amateur Radio Bands, and to highlight various types of AM equipment in use today.
This event is open to any and all radio amateurs who are running full carrier amplitude modulation (standard AM), and any type of equipment may be used.
Although there is a "points" system to encourage friendly competition, there is also an awards incentive for categories that showcase the relaxed, satisfying nature of receiving and transmitting conversations on AM.
The event runs from 6:00 AM E.S.T. Saturday morning Feb. 6, to 2:00 AM E.S.T. the following day.
Commonly used AM Frequencies:
160 Meters: 1880-1885, 1930, 1945, 1975-1995.
80 Meters: 3730-3740, 3870-3885.
40 Meters: 7160, 7280-7295.
20 Meters: 14286.
15 Meters: 21425.
10 Meters: 29000-29200.
Complete details with scoring, awards, logbook templates, and additional information is at:
http://www.classeradio.com/amtr.pdf
Tuesday, February 2, 2010
1926 Standard Postage Stamp Catalogue
What a treat.....Thank you to whoever sent me the (1926 Standard Postage Stamp Catalogue) It is really awesome. No return address or anything on box. Just my address.
Monday, February 1, 2010
Just Thinking
I wish outer space guys would conquer the Earth and make people their pets, because I'd like to have one of those little beds with my name on it.
Gaua Volcano, Vanuatu
Saturday, January 30, 2010
My Dog
TERRESTRIAL GAMMA-RAY FLASHES
full story.
Contest this Weekend.
There is also the CQ World Wide 160-Meter Contest.
I do not know how much contesting I will do but plan on being out there.
Friday, January 29, 2010
NASA WEB CHAT
BIGGEST FULL MOON OF THE YEAR
Johannes Kepler explained the phenomenon 400 years ago. The Moon's orbit around Earth is not a circle but an ellipse, with one side 50,000 km closer to Earth than the other. Astronomers call the point of closest approach "perigee," and that is where the Moon will be Friday night through Saturday morning.
A good time to look is around sunset when the Moon is near the eastern horizon. At that time, illusion mixes with reality to produce a truly stunning view. For reasons not fully understood by psychologists, low-hanging Moons look unnaturally large when they beam through foreground objects such as buildings and trees. Why not let the "Moon illusion" amplify a full Moon that's extra-big to begin with? The swollen orb rising in the east may seem close enough to touch.
Thursday, January 28, 2010
ISS SSTV experiment
The ISS puts out a strong signal on 145.800 MHz FM and a 2m handheld with a 1/4 wave groundplane antenna will be enough to receive it. The FM transmission uses 5 kHz deviation which is standard in much of the world.
Many FM rigs in the UK can be switched between wide and narrow deviation FM filters so select the wider deviation. Handhelds all seem to have a single wide filter fitted as standard.
Free PC sound card Slow Scan TV software such as MMSSTV can be used to display the pictures and you can use software such as the IZ8BLY Vox Recoder to save the audio for later decoding if you are away at work.
Russian Federal Space - ISS Experiments January 25-31 (Google English)
http://tinyurl.com/yhy49t4
Information on the MAI-75 SSTV experiment
http://www.energia.ru/eng/iss/resear...cation-26.html
How to access the ISS Slow Scan TV
http://www.marexmg.org/fileshtml/howtoisssstv.html
Free Slow Scan TV Software MMSSTV uses your PCs Soundcard
http://mmhamsoft.amateur-radio.ca/
IZ8BLY Vox Recoder, enables you to record the signals from the ISS on 145.800 MHz while you're away at work
http://xoomer.alice.it/aporcino/VoxRecorder/
ISS Real Time Tracking (tick draw footprint)
http://www.n2yo.com/?s=25544
Amateur Radio on the International Space station (ARISS) SSTV picture gallery
http://www.amsat.org/amsat/ariss/SSTV/
ISS Fan Club
http://www.issfanclub.com/
AMSAT-UK publish a colour A4 newsletter, OSCAR News, that is full of Amateur Satellite information.
Join online at https://secure.amsat.org.uk/subs_form
source
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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