Saturday, July 23, 2011

Amateur Radio saves Man’s Life

Lee Phillips K4USS had a stroke while driving to the Upperville Horse Show, fortunately he had his ham radio w/ APRS in his truck.

Using the ham radio he was able to call friends on the air and his Automatic Packet Reporting System (APRS) provided a signal to track his position on a map

Read the Loudoun Times article at
http://www.loudountimes.com/index.ph..._mans_life111/

Automatic Packet Reporting System (APRS)
http://www.aprs.org/
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This a video on YouTube showing reception of the South Sudan DXpedition station ST0R on 20m CW.

The Intrepid-DX Group and the DX Friends have combined efforts to plan the multi-national DXpedition to Southern Sudan to celebrate the birth of a new country. ST0R will be active from July 22 to August 10.

The YouTube description reads
Southern Sudan 2011 DXpedition First Amateur Radio License issued by Southern Sudan Government South Sudan.

Southern Sudan 2011
http://www.dxfriends.com/SouthernSudan2011/

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W9IMS

W9IMS The Indianapolis Motor Speedway Amateur Radio Club

Brickyard 400 - July 25-31 & Red Bull Indianapolis GP - August 22-28:

We will operate from 1500Z through 0300Z on Friday, Saturday and Sunday of those two race weekends.

W9IMS info

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My Stamp Collecting Blog

My Stamp Collecting Blog

Counter Added January 1, 2011

free counters

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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