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04/20/2015 | Fox-1C and 1D Satellites to Include L-Band Uplink; Fox-1E to Have Linear Transponder
AMSAT Vice President-Engineering Jerry Buxton, N0JY, has announced plans to incorporate an L-band receiver in the Fox-1C and Fox-1D satellites.
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03/30/2012 | The K7RA Solar Update
Eight new sunspot groups appeared this week, but the average daily sunspot number declined four points to 71.1; the average daily solar flux rose by less than two points to 103.7. Sunspot numbers for March 22-28 were 86, 74, 65, 84, 56, 63 and 70, with a
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06/10/2011 | The K7RA Solar Update
Although higher early in the reporting week, the average daily sunspot numbers declined more than 4 points to 85.7, while the average of daily solar flux numbers were down 1.5 points to 101.6 when compared to the previous week, May 26-June 1. Sunspot numb
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04/15/2011 | The K7RA Solar Update
On Wednesday, April 13, the daily sunspot number reached a new high for Solar Cycle 24 when it hit 153. I looked back over this calendar year and saw that the previous high was 137 on March 8, 2011, 16 points lower than Wednesday. That week’s Solar Update
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06/04/2010 | The K7RA Solar Update
The average daily sunspot numbers were up nine points to 25.3 for this week, compared to the May 20-26 period; the average daily planetary A index rose nearly 10 points to 14.3, and this rise in geomagnetic instability came with the increase in solar acti
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