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# Antennas Forum – Digital Signal Processing in Radio Astronomy - Lessons Portal
Lots of lessons
[https://wvurail.org//dspira-lessons/forum/antennas/](https://wvurail.org//dspira-lessons/forum/a…
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I just compiled the latest build to get my RTL-SDR v4 to work, and it did..
But now the older SDR I had no longer can detect anything..
I followed the direction to the tee..
What am I doing…
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I have a Chinese clone of a HackRF with a H2 portapack R9 and I have found the following gaps in the receiver, using the sound App.
945 to 1999 MHz
2171 to 2300 MHz
2701 to 2920 MHz
4201 to 4720…
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To quote Mike:
https://1090mhz.uk/files/radar-1.01/tar.gz
as/when/if you get time to update the containers ...
RSSI and MLAT were in the wrong order in the sender and aggregator - so it w…
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**sdrtrunk Version**
0.6.0beta5 and 0.6.0alpha5
**Describe the bug**
When setting a high ppm value (~220) to hit my local control channels, I am able to decode the CC, but the autogenerated traffic c…
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Somewhere recently our MI50 stopped working. All I was able to find so far is this in dmesg:
Same Node also runs MI100 and MI210 successfully. I don't see any hardware errors and this MI50 was work…
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I have set this up previously with no issue, but when I moved to a new vm, I keep getting the following error when running rbfeeder
This isn't an arm machine (it's an old pc running proxmox which r…
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Re-imaged with 0.9.5 and setup manually, did not restore backup. Only detecting 1 SDR, not both that were plugged in upon initial boot. Tried to edit the .env file to set it to 2, but upon reboot it s…
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I get a lot of entries like this in the Docker logs. I assume this is a good thing (a measurement of error), but it feels like an error (problem).
> Received MLAT timestamp error: 0 seconds!
Is …
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Hello,
I am using the ADSB-Out library (https://github.com/lyusupov/ADSB-Out) to generate an adsb message and transmit via hackrf. The procedure is to generate a message (4096 bytes) and alignmen…