I have installed rtldavis as advised
here https://github.com/lheijst/rtldavis and also took care of compiling my
own librtlsdr as advised
here https://groups.google.com/g/weewx-development/c/L5Lt8x87I_s/m/PP5AdFnQAQAJ.
After doing that I don't get anymore the message "Allocating 1 zero-copy
buffers".
Unfortunately it still does not find the signal from my Vantage Vue ISS
that I just turned on with the battery.
Here is the log that I'm getting
12:27:00.837238 rtldavis.go VERSION=0.15
12:27:00.837746 tr=1 fc=0 ppm=0 gain=87 maxmissed=51 ex=0 receiveWindow=300
actChan=[0] maxChan=1
12:27:00.837789 undefined=true verbose=false disableAfc=false deviceString=0
12:27:00.839045 BitRate: 19200
12:27:00.839100 SymbolLength: 14
12:27:00.839134 SampleRate: 268800
12:27:00.839167 Preamble: 1100101110001001
12:27:00.839200 PreambleSymbols: 16
12:27:00.839233 PreambleLength: 224
12:27:00.839266 PacketSymbols: 80
12:27:00.839327 PacketLength: 1120
12:27:00.839363 BlockSize: 512
12:27:00.839396 BufferLength: 2048
Found Rafael Micro R820T tuner
12:27:01.278886 Hop: {ChannelIdx:0 ChannelFreq:868077250 FreqError:0
Transmitter:0}
Exact sample rate is: 268800.001367 Hz
12:27:01.469509 Supported tuner gain: 0 Db 9 Db 14 Db 27 Db 37 Db 77 Db 87
Db 125 Db 144 Db 157 Db 166 Db 197 Db 207 Db 229 Db 254 Db 280 Db 297 Db
328 Db 338 Db 364 Db 372 Db 386 Db 402 Db 421 Db 434 Db 439 Db 445 Db 480
Db 496 Db
12:27:01.495140 SetTunerGain 87 Successful
12:27:01.495258 GetTunerGain: 87 Db
12:27:01.495315 SetFreqCorrection 0 ppm Successful
12:27:01.499374 Init channels: wait max 17 seconds for a message of each
transmitter
12:27:19.437189 Init channels: wait max 17 seconds for a message of each
transmitter
12:27:19.437549 Hop: {ChannelIdx:0 ChannelFreq:868077250 FreqError:0
Transmitter:0}
12:27:37.376191 Init channels: wait max 17 seconds for a message of each
transmitter
12:27:37.376373 Hop: {ChannelIdx:0 ChannelFreq:868077250 FreqError:0
Transmitter:0}
I'm on a Raspberry Pi 4 with bullseye
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