NOAA-15 / NOAA-17 の周波数が、2010年10月12日に変更になりました。
NOAA-15, 137.620 MHz
NOAA-17, 137.500 MHz
NOAA 15 and NOAA 17 swapped frequencies on 12 October 2010, with NOAA 15
now on 137.62 and NOAA 17 on 137.50. If you haven't picked up the changes,
you should check Options -> Active APT Satellites, and ensure Update this
table when updating Keplers is selected. File -> Update Keplers will pickup
the new frequency changes. Options -> Save Options will ensure the frequency
changes are saved for the next time you start WXtoImg.
http://www.wxtoimg.com/
http://www.asahi-net.or.jp/~ei7m-wkt/numbr444.htm