HFU HF Underground
Loggings => VHF/UHF Logs, including satellites and radiosondes => Topic started by: SV1XV on December 27, 2019, 0419 UTC
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(http://cdn.ipernity.com/200/29/16/49572916.462f660c.500.jpg) (http://www.ipernity.com/doc/777361/49572916)
DORIS DIONYSOS DIOB station (2019) (http://www.ipernity.com/doc/777361/49572916) par SV1XV (http://www.ipernity.com/home/777361), on ipernity
This is a photo of our local uplink to the DORIS satellite positioning system. It transmits plain carrier (N0N) on 401.25 and 2036.25 MHz for Doppler positioning, with some FSK identification packets.
For more info on this system visti the following pages:
- http://ids-doris.org/ (http://ids-doris.org/)
- https://en.wikipedia.org/wiki/DORIS_(geodesy) (https://en.wikipedia.org/wiki/DORIS_(geodesy))
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(http://cdn.ipernity.com/200/65/92/49576592.6c5de4a6.240.jpg) (http://www.ipernity.com/doc/777361/49576592)
20191228-SXDVZ (http://www.ipernity.com/doc/777361/49576592) par SV1XV (http://www.ipernity.com/home/777361), on ipernity
The signal of DORIS DIOB transmitter on 401.25 MHz, reflected on SX-DVZ (Airbus A321, flight A3-614) with Doppler shift. The DORIS uplink is very weak at my site, it is only 19.6 km away but there is high ground blocking it.
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You've got a nice setup for passive radar there!
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You've got a nice setup for passive radar there!
Some day I would like to try to receive plane reflections on 2036.25 MHz, but I need a special antenna and LNA for this.
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From a recent post by Roland DF3LZ on twitter: The station emitting DORIS signals in Wettzell on 401.25 and 2036.25 MHz:
https://pbs.twimg.com/media/EM-LfZzWoAEvjNk?format=jpg&name=4096x4096 (https://pbs.twimg.com/media/EM-LfZzWoAEvjNk?format=jpg&name=4096x4096)