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Excerpt from Amsat-uk.org website
An ARISS Slow Scan TV (SSTV) event is scheduled from the International Space Station (ISS) for December 24-31
Date of event: 16:40 24/12/1020 – 18:15 31/12/2020
Frequency: 145.800 MHz FM +/- 3 kHz Doppler shift
SSTV Mode: PD 120
Radio enthusiasts participating in the event can post images they receive at the ARISS SSTV Gallery at https://www.spaceflightsoftware.com/ARISS_SSTV/
After your image is posted at the gallery, you can acquire a special award by linking to https://ariss.pzk.org.pl/sstv/ and follow directions for submitting a digital copy of your received image.
Dates and times subject to change due to ISS operational adjustments.
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All ISS passes calculated on the approximate coordinates of Grantham.