Monday, September 20, 2010

2 Meter Fall Sprint Tonight

I'm a day off today. Was laid up yesterday and spent today getting things on track.
Got this e-mail from Todd KC9BQA in regards to the 2 meter sprint tonight.
I might get into it, then again, might not~not feeling to good yet.
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2 Meter Fall Sprint Tonight -- Monday -- 7-11pm

If you enjoy activity on 2m SSB, then tonight's your night.
There will be multiple stations on from WI and N ILL and I'm sure
from MI, too.

80-90% of VHF/UHF contesting activity takes place on the SSB portions of the bands (talking 144.160-144.240, with more activity centered closer to 144.200 MHz) using horizontally-polarized
antennas -- typically directional yagis for maximum gain. If contesting interests you, that's where you want to go with your station. Well -- not just contesting, but for general ragchewing
and working band openings. On Sat. morning, TN stations were working 1000-mile paths into the Northeast on/near 144.200 MHz.

If you're FM-only, then you want to use 146.550 tonight. I'm sure if you CQ for a while, it'll get the ball rolling.

If you want more info about the fall sprints, all the relevant
info is easily found at kc9bqa.com.

I also will try to help anyone with questions via email.

73,
Todd KC9BQA EN63ao 40 N of Milwaukee
www.kc9bqa.com For Frequent VHF/UHF Updates
www.wivuch.com WI VHF/UHF County Hunters Award
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My Stamp Collecting Blog

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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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