Tuesday, January 4, 2011
KD8BIG; Additional Blog Topics
Fly Fishing was something I done when I was 13-25, taught by both my grandfathers. When they passed away I had no-one to fly fish with.
Now my son is into fishing and wants to learn about tying flies and the art of being a Fly Fisherman.
I have found my old fly tying rig and it looks like I need to order new material. It’s a far cry from antenna building but it is something I can do in my radio room or in my recliner.
Back to my reason to this post, I started a Stamp Blog back on October 2nd. I just have not really had the ambition to log out of one blog and log into the other and visa-versa. So I am considering re-establishing my KD8BIG amateur radio blog to KD8BIG, Amateur Radio Operator, Fisherman and Stamp & Sports Memorabilia Collector.
However, I am not going to change the URL or anything regarding this site. You’ll just see post on other hobbies of mine as well as Amateur Radio topics.
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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