Regarding Observation 3520040 …
Hello,
can anybody tell why this one failed?
It’s got audio and a waterfall.
This is my first attempt with the HackRF, so any clues would be highly appreciated.
Thank you!
73
Sven
1 Like
The audio is only 308 seconds, but the observation is almost 1000 seconds. When the two are off by that much, the observation is automatically vetted as failed.
–Roy
K3RLD
1 Like
That makes sense, Roy - thank you!
I am trying to understand the root cause of the issue.
This is what I have found in /var/log/daemon.log:
Jan 22 20:36:11 sn1925 satnogs-client[361]: OOOO[…]OOOsOsOsOsOs[…]OsOsOsOsOsOsOOOOOOOOOO[…]OOOOOOOOOOOOOOO
Followed by a similar log entry at 20:38:53.
This is the support info:
{
“versions”: {
“satnogs-client”: “1.4+8.g3dd402e”,
“satnogs-client-ansible”: “202012231828”,
“satnogs-flowgraphs”: “1.3-1”,
“gr-satnogs”: “2.2.0.0+2+g1103a05e-1”,
“gr-soapy”: “2.1.3+8+g16a902fc-1”,
“gnuradio”: “3.8.2.0-2”,
“satnogs-config”: “0.11+3.g3ddb06c”
},
“state”: {
“is-applied”: true,
“pending-tags”: null
},
“system”: {
“date”: “2021-01-22T22:52:16.183009+00:00”,
“distribution”: {
“DESCRIPTION”: “Raspbian GNU/Linux 10 (buster)”,
“RELEASE”: “10”,
“CODENAME”: “buster”,
“ID”: “Raspbian”
},
“pending-updates”: true,
“platform”: {
“system”: “Linux”,
“node”: “sn1925”,
“release”: “5.4.83-v7+”,
“version”: “#1379 SMP Mon Dec 14 13:08:57 GMT 2020”,
“machine”: “armv7l”,
“processor”: “”
},
“memory”: {
“total”: 969764864,
“available”: 790142976,
“percent”: 18.5,
“used”: 119889920,
“free”: 554962944,
“active”: 241586176,
“inactive”: 127029248,
“buffers”: 24932352,
“cached”: 269979648,
“shared”: 6504448,
“slab”: 27328512
},
“disk”: {
“total”: 15346831360,
“used”: 3798261760,
“free”: 10900717568,
“percent”: 25.8
}
},
“configuration”: {
“enable_iq_dump”: true,
“experimental”: true,
“satnogs_antenna”: “TX/RX”,
“satnogs_api_token”: “[redacted]”,
“satnogs_ppm_error”: “0”,
“satnogs_rf_gain”: “64”,
“satnogs_rx_samp_rate”: “8e6”,
“satnogs_soapy_rx_device”: “driver=hackrf”,
“satnogs_station_elev”: “9”,
“satnogs_station_id”: “1925”,
“satnogs_station_lat”: “53.180318”,
“satnogs_station_lon”: “7.204439”
}
}
1 Like
The O’s indicate buffer overruns, e.g. the system is not keeping up with the amount of samples coming in.
Since it appears you are running on a Raspberry Pi, and you are running your hackrf at 8 MHz sample rate, i am not surprised. I would suggest running at a smaller sample rate, or not using a raspberry pi.
2 Likes
Thank you, I’ll experiment with a smaller sample rate first.
1 Like
It seems to work better now, I’ll keep monitoring.
Thank you for your assistance, and have a great weekend!
1 Like