Tonight's NOAA - 15 Weather Image  Screenshot of Satscape Satellite Tracking & Radio Com Decoding software  The receiving is done with the Yaesu FT-847 Transceiver and IOIo Antenna.  I managed to get a good image earlier this evening using the above setup. The received image shows the north Coast of Africa up to the Arctic Circle, as you can see there is a lot of cloud rolling in over the U.K. You can also see the "Grey Line" as the Sun is shining to West. I received the above WX image on FM, from my ground station at 16.45 utc on 137.500 MHz + or - Doppler, courtesy of NOAA - 15 Weather Satellite.
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That's a good pic, Simon, considering the compromise antenna and Rx. I used to do Wxsat receiving myself. There are a couple of articles about it at g4ilo.com. I suspect if you made a QFH antenna such as the one I made you could get even better results.