Saturday, October 12, 2013

DX Events

In DX, word that CT2HPM is once again on the air from Angola operating as D2CT. He plans to be there through November 15th operating PSK31 and RTTY on 20 through 10 meters including the WARC bands. QSL via CT2HPM.
W1CDC will be operational from Guyana as 8R1A between October 13th and November 1st. Activity will be holiday style on 80 through 10 meters using CW and SSB. QSL via his home callsign, direct or by the bureau.
YB9WZJ and YD9RQX will be active using their home calls stroke P from Waigeo Island between October 16th and the 22nd. Operations will be on 40, 20 and 15 meters using SSB only. QSL only via their home callsigns.
Members of the Andorran Amateur Radio Union will again be active as C37NL from Andorra during the CQWW DX SSB Contest. The dates are October 26th and the 27th. QSL via C37URA.
N0HJZ, will be active as C6ARW from Grand Bahama Island between October 22nd to the 29th. Operations will be on 30, 17 and 12 meters using CW and RTTY. QSL via his home callsign, direct (with sufficient postage) or by the Bureau.
AA1AC will be on the air stroke 6W from La Somone, Senagal between December 8th and the 14th. No information on times or frequencies was given. QSL direct or by the Bureau to his home callsign.
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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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