source; http://www.spc.noaa.gov/exper/envbrowser/
Monday, February 18, 2013
U.S. Tornado Environment Browser
New:
A tornado environment browser for the contiguous United States is now available.
A tornado environment—convective mode sample (2003-2011) displays statistical information of supercell-related
convective parameters accompanied by smoothed tornadic convective mode climatology images.
(Updated: January 22 2013)
source; http://www.spc.noaa.gov/exper/envbrowser/
source; http://www.spc.noaa.gov/exper/envbrowser/
ARISS has switched after experiencing issues w/Kenwood D700
ARISS has switched radios. After experiencing issues with the Kenwood
D700 on two consecutive school contacts, Amateur Radio on the
International Space Station operations have announced plans to use the
Ericsson radio on the Columbus module for all contacts until problems
with the D700 are resolved.
Frank Bauer, KA3HDO, is AMSAT's Vice President for Human Spaceflight Programs. He says that for some reason signals from the Service Module Kenwood D700 radio are much diminished. He notes that a recent contact with Israel had low audio levels. Another contact with the Hospital for Sick Children was even worse. Only one student was able to talk to Chris Hadfield before signals on the ground were lost even though the crew reports hearing the ground station well.
It should be noted that both these contacts were with made using telebridge stations which have above average gear. Also astro-ham Hadfield used the space stations IP Phone, immediately after the hospital radio contact and answered all the student's questions so that all was not lost. A later contact with a school in Japan using the Columbus Module Ericsson radio proved very successful. (ANS, ARISS)
Frank Bauer, KA3HDO, is AMSAT's Vice President for Human Spaceflight Programs. He says that for some reason signals from the Service Module Kenwood D700 radio are much diminished. He notes that a recent contact with Israel had low audio levels. Another contact with the Hospital for Sick Children was even worse. Only one student was able to talk to Chris Hadfield before signals on the ground were lost even though the crew reports hearing the ground station well.
It should be noted that both these contacts were with made using telebridge stations which have above average gear. Also astro-ham Hadfield used the space stations IP Phone, immediately after the hospital radio contact and answered all the student's questions so that all was not lost. A later contact with a school in Japan using the Columbus Module Ericsson radio proved very successful. (ANS, ARISS)
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