11 hours ago
Update #7 4m dish build. Just a quick look see! It's really taking shape and more fun now all the messy cutting and drilling is done.. #Ghz_bands #eme #hamradio https://t.co/aGn3UajP55
11 hours ago
16 ribs ready for the 4m dish. Lots more to do now the Aluminium has arrived. Outer and inner rings next.
#eme #Ghz_bands #hamradio https://t.co/I2ykN7rrbQ
11 hours ago
I thought i would add RA and DEC output to my DSN Tracker. What a rabbit hole. Soon was knee keep in LST and GST and Hour-Angle. Took way too long to get this going. But it's done (i hope).
Now am thinking sidereal tracking would be a nice addition too... https://t.co/22LhQXYQJB
12 hours ago
Nick James observing from Chelmsford, UK provided this GIF via Seesat-l of #Change5. Potentially interesting! I heard reports from EU radio observers of signal level variations earlier. Not 100% sure this is the payload and not the final rocket stage. https://t.co/XJYuQ3oJNJ https://t.co/ZiPPxfLTHm
14 hours ago
New blog post: A look at Chang'e 5 telemetry. Details, code and data for the Chang'e 5 frames that I've been tweeting about lately. Thanks to @usa_satcom and @uhf_satcom for providing the data and to @r2x0t for leading this decoding effort. https://t.co/0bRoP2bPe2 https://t.co/Ro9QEYRhaz
18 hours ago
CE5 X-Band downlink this evening, new tracking data from @coastal8049 working a treat, no tweaking needed of antenna position! https://t.co/owWjnHvfXv
Monthly Archives: November 2014
Blue Force Tracking on Inmarsat
Blue Force Tracking is a GPS-enabled system that give US Military the location of “friendly” military forces. You can read more about it on Wikipedia. Inmarsat is one of the commercial satellite providers that has a contract with the the … Continue reading
Inmarsat Antenna Distribution
Inmarsat L-Band signals from both CONUS and POR need to be routed to various receivers and SDRs, this distribution system is a pretty simple solution (as shown below). It’s based on taking an L-Band signals from a dish, where pre-amplification … Continue reading
XM-1 S-Band Signal
Need to check dish alignment on S-Band? The 12.5MHz XM-1 signal is a great test signal. XM-1 is a much more interesting signal to look at than Sirius. The signal below is using a 1.8m dish.