Tuesday, January 31, 2012

SEVHFS Soliciting Papers for April Conference

Papers and other presentations are solicited The 15th Annual Southeastern VHF Society Conference to be held in Charlotte, North Carolina on April 20th and 21st. Submissions are welcomed on both the technical and operational aspects of VHF, UHF and Microwave weak signal amateur radio. The deadline for the submission is February 17th.
More is on-line at www.svhfs.org.
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LoTW to support CQ Operating Awards

CQ Communications and ARRL have signed an agreement to begin providing support for CQ-sponsored operating awards by the ARRL's Logbook of the World electronic confirmation system. CQ's awards will be the first non-ARRL awards supported by Logbook of the World and will be phased in, beginning with the CQ WPX award. Additional CQ awards will follow.

The target date for beginning Logbook of the World support for WPX is April 1st. Amateurs will be able to use Logbook of the World logs to generate lists of confirmed contacts to be submitted for WPX credit. Standard Logbook of the World credit fees and CQ award fees will apply.

The ARRL’s Logbook of the World system is an interactive database recording contacts between radio amateurs was created in 2003 and has been adopted by 47,500 radio amateurs worldwide. It already has records of 400 million contacts and grows weekly.

The agreement was announced jointly on Tuesday, January 24th by ARRL Chief Operating Officer Harold Kramer, WJ1B, and CQ Communications President Richard Ross, K2MGA
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My Stamp Collecting Blog

My Stamp Collecting Blog

Counter Added January 1, 2011

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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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