08/05/2011 | Hooverfest
Aug 5-Aug 8, 1400Z-2300Z, K0H, Coralville, IA. Iowa City Amateur Radio Club (W0JV). 14.260 14.070 21.300 21.070. QSL. Iowa City Amateur Radio Club / K0H, PO Box 4, Iowa City, IA 52244. Expect to be on the air via Phone, PSK and some CW. www.icarc.org
08/05/2011 | 2011 ARRL Rocky Mountain Division Convention
Aug 5-Aug 7, 2200Z-1800Z, W1AW/5, Taos, NM. ARRL Rocky Mountain Division. 21.355 14.255 7.255 3.855. QSL. ARRL, W1AW/5, 225 Main St, Newington, CT 06111. 80 40 20 15 m SSB CW and digital depending on time of day and propagation. Frequencies ending in "5" for 5th district (NM). www.2011convention.org
08/05/2011 | Brockway Mountain Special Event
Aug 5-Aug 8, 1200Z-1200Z, W8B, Copper Harbor, MI. The Lone Wolfe Pack High Frequency Amateur Radio Society. 50.125 29.600 18.140 14.320. QSL. John Ponchaud, 325 Carpenter Road, Crystal Falls, MI 49920. Near Copper Harbor, Michigan, Grid Square EN67. Will be operating 160 meters through 440 MHz all modes. SASE for QSL appreciated. john-ab8ko @ sbcglobal.net
08/05/2011 | 90th Anniversary of the World’s First Live Play-by-Play Broadcast of a Baseball Game
Aug 5-Aug 6, 1100Z-1100Z, K3D, Saxonburg, PA. North Hills Amateur Radio Club. 14.260 7.260. QSL. Chris Hyatt, KB3NPA, 201 Iola Ave, Glenshaw, PA 15116. From Saxonburg Museum in Roebling Park....one of the original KDKA transmitter sites. No LoTW or eQSL. www.nharc.org/K3D_Special-Event.html
08/05/2011 | Cove Fort Days
Aug 5-Aug 6, 1400Z-2359Z, K7K, Cove Fort, UT. Cove Fort Amateur Radio Club. 50.150 14.250 7.272 3.985. Certificate. Alan Bryner, KK7UD, 4021 North 500 West, Ogden, UT 84414. www.qrz.com/db/k7k
08/06/2011 | River City Days
Aug 6, 1400Z-2200Z, W0R, Red Wing, MN. Hiawatha Valley Radio Club. 147.300 14.300 21.300. Certificate. Bill Eichenlaub, 1966 Launa Ave, Red Wing, MN 55066.
08/06/2011 | USCG 221st Birthday
Aug 6-Aug 7, 1400Z-0400Z, K1CG, Port Angeles, WA. Coast Guard CW Association. 21.052 14.052 7.052 3.552. QSL. Fred Goodwin, 424 N Bagley Ck Rd, Port Angeles, WA 98362. K1CG will be operated by several different stations across the country starting on the east coast and moving west from 1400Z to 0400Z.
08/06/2011 | Point Reyes Lighthouse Activation
Aug 6-Aug 7, 1600Z-2359Z, N6P, Point Reyes, CA. Valley of the Moon Amateur Radio Club. 14.270 7.270 PSK31 14.070 7.035. QSL. Ken McTaggart, N6KM, 402 4th St E, Sonoma, CA 95476. Times are daily. vomarc.org
08/06/2011 | Brat Days, Sheboygan WI
Aug 6, 1300Z-2200Z, W9B, Sheboygan, WI. Sheboygan County Amateur Radio Club. 28.380 14.240 7.240. Certificate & QSL. John Draves, 1225 Carmen Ave, Sheboygan, WI 53081.
08/06/2011 | Boulder County Colorado Fair - 142nd
Aug 6, 1500Z-2359Z, W0ENO, Longmont, CO. Longmont Amateur Radio Club. 21.275 14.265 7.185. QSL. Doug Altman, KE0SI, 1641 Hartley Ct, Longmont, CO 80501. 5X7 SASE please www.w0eno.org
08/07/2011 | 95th Anniversary of Lassen Volcanic National Park
Aug 7-Aug 15, 0000Z-0000Z, N6L, Mineral, CA. Area Amateurs. 14.244 10-40 m. QSL. K6LSN, 5921 Cedars Rd, Redding, CA 96001. For Event QSL please send SASE. DX please send SAE w/ 2 US $. lassenbirthday.blogspot.com
Friday, August 5, 2011
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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