SB PROP @ ARL $ARLP042
ARLP042 Propagation de K7RA
ZCZC AP42
QST de W1AW
Propagation Forecast Bulletin 42 ARLP042
From Tad Cook, K7RA
Seattle, WA October 20, 2017
To all radio amateurs
SB PROP ARL ARLP042
ARLP042 Propagation de K7RA
The past reporting week (October 12-18) saw very little solar
activity, with a sunspot number of 12 on October 15, meaning the
average daily sunspot number was only 1.7, down from the already low
average of 8.4 over the previous seven days.
Over the same two periods, average daily solar flux declined from
76.8 to 70.5, while average daily planetary A index increased from
8.9 to 21.1 and average mid-latitude A index went from 8 to 16.7.
Dr. Tamitha Skov says there are sunspots just beyond the solar
horizon which should soon come into view and begin to affe
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New Ham Bands Spring to Life; Veteran LF Experimenter Denied Amateur Access to 2200 Meters
10/17/2017
Amateur Radio’s two newest bands came to life on Friday the 13th. Both 630 meters (472-479 kHz) and 2200 meters (135.7-137.8 kHz) bands now are available to radio amateurs who have notified the Utilities Technology Council (UTC) of their intention to operate and did not hear anything back during the ensuing 30 days.
“Many of us filed notices with the Utilities Technology Council on September 15, the day the notification procedure was announced,” said Fritz Raab, W1FR, who coordinated the ARRL WD2XSH 630-Meter Experiment. “We did not expect to hear from the UTC unless
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Here’s the very latest FREE DX-World Weekly Bulletin written by Bjorn, ON9CFG. As always, it’s packed full of info. This week it runs to 14 pages. You can download it ... Читать дальше »
IARU Region 2 Announces Ham Aid Donation of Funds and Equipment
10/06/2017
International Amateur Radio Union (IARU) Region 2 has pledged to donate $5,000 as well as two Ham Aid kits to the Puerto Rico-Caribbean relief effort.
The IARU is an organization consisting of over 160 national Amateur Radio societies around the world. The organization, which has been the spokesman and watchdog for the world Amateur Radio community since 1925, is divided into three Regional Organizations. IARU Region 2 represents the Americas.
Ham Aid was created in 2005 in response to the need for equipment and resources to support the Amateur Radio response to hurricanes in the US and Caribbean. ARRL has supplied Ham Aid kits for the hurricane emergency respon
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To realize this Bullettin Sixitalia use news (except when clearly indicate) extract by (in alphabetic order): 425dxn, 50 MHz DX News by OZ6OM, ARRL DX bullettin, Dxcoffe, DXitalia DXnews by I2MQP, DXNL, www.dx-world.net, Got6 by N8OFS, ICPO, MMMonVHF, OPDX, www.rudius.net & 70mhz.org.
Набор EDA-инструментов для рисования и моделирования высокотехнологичных элементов радиоэлектроннной аппаратуры для Linux-платформ.
Комплект программ автоматизированного проектирования Open Circuit Design Software в первую очередь предназначен для инженеров-электронщиков и может быть использован при разработках сложных цифровых БИС/СБИС. В настоящее время данный набор включает в себя следующие приложения:
XCircuit. Программное обеспечение для рисования электрических схем. Процесс работы состоит из следующих этапов: выбора необходимых эл
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Понедельник, 25.11.2024, 19:51
