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About video

Amateur radio usable hf frequencies (page refreshed every 20 minutes) use the indicated color (red, yellow, green, blue, white, etc. ) to determine the recommended hf frequencies for contacts from your nearest base (new york, boston, atlanta, orlando, kansas city, phoenix, san francisco, and seattle). Any white bubble indicates no suitable frequency or high absorption.   amateur radio on the international space station (ariss) will soon celebrate 20 years of continuous ham radio. Arrl national convention and orlando hamcation postponed to february 2022 arrl and the orlando amateur radio club (oarc) have announced that the arrl national convention and orlando ha. Radio propagation and the amateur radio operator by howard g. , w3mbw rca electronic components and devices in the following article, the author reviews the subject of radio propagation as it applies to the amateur operator. Propagation map see the predictions of what frequencies go where. Then click beyond the area you are interested in and drag the mouse diagonally across the area to select an area. This series of charts (change months and bands as required) is a useful guide to hf propagation. The maximum usable frequency (muf) is the highest frequency that, with a probability of 50 of the time, can be used for radio communication between two points at a specified distance (but not necessary in all directions) via refraction by the ionosphere. Propagation prediction software for ham radio category is a curation of 30 web resources on , hf propagation app for windows, wsprnet , palmprop. Resources listed under propagation prediction category belongs to software main collection, and get reviewed and rated by amateur radio operators. Ham radio cycle 25 propagation conditions home qsl details propagation dx cluster contest calender essential resources qrz. The ionized layers and their respective role in hf radio wave propagation ionized layer d during the day, the ionized layer d mostly hinders ionospheric propagation of radio waves.   tad cook, k7ra, seattle, reports sunspots returned on october 9 12, with sunspot numbers of 24, 26, 15 and 15.

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