Wednesday, February 19, 2014
Cape II Amateur Radio Satellite Cube OSCAR 75 or LO-75
The CAPE II ham satellite operates on 145.825 MHz FM with a CW beacon signing the call W5UL. The bird also includes a digipeaters, text to speech operation, a simplex repeater, e-mail and tweet functions. The ground station software can be downloaded at www.ulcape.org
DX News
OE4AAC is reportedly on the air stroke 3B9 from RodriguesIsland and will be there through February 18th. Activity is holiday style on 40 through 10 meters using CW only. QSL via OE4AAC.
F5MVB and F5AOW are planning to be active as 5V7MP and 5V7BJ, respectively, from Avepozo, Togo from March 23rd to the 31st. Operations will be on CW and SSB. QSL via their home callsigns, either direct or by the Bureau.
G3XAQ be on the air from Kampala, Uganda, as 5X1XA between February 25th and March 16th. Activity will be CW only. QSL 5X1XA via G3SWH.
GM4YXI and GM3WOJ will be operational as A35X and A35V respectively, from TongatapuIsland between April 4th to the 18th. Activity will be on 160 through 10 meters using CW and SSB and some RTTY. QSL both A35V and A35X via N3SL
Lastly, M5RIC will be active stroke 5B from Cyprus between July 22nd and the 29th. His operation will include the RSGBIslands on the Air Contest slated for July 26th and the 27th using the callsign C4I. Outside of the contest, look for him on SSB and RTTY. QSL via M0OXO.
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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