Friday, October 14, 2011
It is amazing how fast time can escape you.
The last 4 weeks have not been good to me; I had a battle with Bacterial Pneumonia, the passing of a couple of friends, sick daughter & wife & other issues.
The good news is I/we are feeling better and I am ready to blog, play radio and catch up on some of my collections.
How about those Detroit Tigers~ (MLB) Oh yeah, they have a chance. If not that is fine, they had a great season and I look forward to next year.
I am glad that Football (NFL) & Hockey (NHL) are underway.
The weather has turned here in Michigan; most of the leaves have peaked and dropped in my region. The temps are now 50’s (10º c) for the high and mid to upper 30’s (1.6ºc) for the lows.
My son and wife have already begun the leave removal process. Most of the summer lawn furniture has been stored and I think we are ready for the long and cold winter months that are fast approaching~
I have made some upgrades to the shack, added some new equipment and also hope to upgrade my license very soon. I was to do that a few weeks ago but was very sick.
de KD8BIG Mark
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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