The ARRL Teachers Institute on Wireless Technology (TI) began its 2010 sessions in February with a Teachers Institute course designed specifically for teachers in the Tucson (Arizona) Unified School District (TUSD). Taught at Jefferson Park Elementary School, 21 educators — including the school principal, school counselor and three resource personnel — took part in five [...]
Registration remains open through Sunday, April 25, 2010, for these online course sessions beginning on Friday, May 7, 2010: Amateur Radio Emergency Communications Level 1; Antenna Modeling; Radio Frequency Interference; Antenna Design and Construction; Propagation; Analog Electronics, and Digital Electronics.
On Thursday, March 25, ARRL President Kay Craigie, N3KN, signed a new Memorandum of Understanding (MoU) with the American Red Cross (ARC) at ARC National Headquarters in Washington, DC. The MoU, which replaces an earlier Statement of Understanding that expired in 2007, provides a "broad framework for cooperation" between the ARRL and the ARC "in [...]
On Sunday, March 28 — a day with a lot of rain, wind, sleet and, fog — John Oakberg, NK4N, of Sevierville, Tennessee, went out hiking in the Great Smoky Mountains National Park near Mt LeConte. When he was about 1 mile up from Alum Cave Bluff, he came across Judy Potter, 57, of Atlanta [...]
I have always been interested in CW especially when as a boy the best I could afford was a Heathkit DX-20, a CW-only transmitter and a military six metal-tube Command Set 40 meter receiver. With this rig I was forced to use CW exclusively and I learned to love telegraphy and became fairly good at [...]
ARRL Headquarters will be closed in observance of Good Friday on Friday, April 2. There will be no W1AW bulletin or code practice transmissions that day. ARRL Headquarters will reopen Monday, April 5 at 8 AM Eastern Daylight Time. We wish everyone a safe and enjoyable holiday weekend.
This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space. The map shows the radio auroral zones as green bands near the northern and southern poles.
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