Saturday, October 26, 2013
Amateur Radio DX News
RK4FF will be on the air as 6V7S from Senegal through November 27th. Activity is on 80 through 10 meters excluding the WARC bands using CW, SSB and RTTY. His log is available on ClubLog. QSL via RK4FF.
DF1YP is now active stroke FO from Moorea Island French Polynesia. He reportedly will be there until November 6th. His operation has been mainly on 20 meters using SSB. QSL via his home callsign.
G4IRN will be active as D44TWQ from Cape Verde between November 5th to the 12th. His operation will be holiday style on the 30, 17 and 12 meters and on CW only. QSL via his home callsign either direct or via the bureau.
N7OU will be operational from the South Cook Islands until 9th of November. He has reactivated his E51NOU callsign on all bands from 10 to 160 meters operating CW only. QSLs go via his home call.
DL7AFS and J7ZG will be active as D44TXT from Ilha de Sao Tiago, until November 7th. They will be on the 80 through 10 meters using SSB, RTTY, PSK31 and PSK63. QSL via DL7AFS, either direct or via the bureau.
N0HJZ is active as C6ARW from Grand Bahama, through October 29th using on 30, 17 and 12 meters as well on CW and RTTY on other bands. QSL via N0HJZ, either direct or via bureau.
DH3WO announces that he will be operational from Lesotho as 7P8WO from December 22nd to the 24th. He plans to be active on all of the High Frequency bands though no operating times or frequencies have yet been announced. QSL’s go via home call.
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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