Wednesday, September 22, 2010
Fall is in the Air
I am so happy that summer has come to an end. Don't get me wrong, I like summer, hate the heat and humidity and we had lots of that this summer here in Michigan.
In the next few weeks the color tours will begin, my wife and I are looking forward to a small getaway.
Graph obtained from The Fall Foliage Network
http://www.foliagenetwork.com/
A great site with lots of info so you can plan your color tours.
"New" ~ Elecraft Custom K3
BTW, although this rig is not new, to me the addition of the knobs makes it a new rig. Maybe I should had said the Custom K3 for a title.
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Now available: A New Weighted dimple type VFO Knob made just for the Elecraft K3
The original K3 knob weighs in around 3.5 ounces. These premium USA made knobs weigh 14 ounces and they tune just wonderful. This knob is made from solid high strength Bronze. There is something about this bearing grade material that feels ultra slick in the hand. It has to be felt in person to appreciate. Smooth as glass is a good description and the color while being quite different from stock, really grows on you the more you use it.
Installation is easy and all hardware is Stainless Steel. Everything is CNC Machined from billet stock right here in the USA. The set screw that holds the knob in place is a flat tip style (no marring of your VFO shaft). Your satisfaction is 100% guaranteed 30 days or you may return it for a full refund.
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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