i know that each SDR usb dongle is slightly off the real frequency.
mine is +56 ppm.
where do i enter this information on my raspberry pi ?
mine is +56 ppm.
where do i enter this information on my raspberry pi ?
sudo nano /etc/default/dump1090-mutability
# dump1090-mutability configuration file # This is a POSIX shell fragment. # You can edit this file directly, or use # "dpkg-reconfigure dump1090-mutability" # Set to "yes" to start dump1090 on boot. START_DUMP1090="yes" # User to run dump1090 as. DUMP1090_USER="dump1090" # Logfile to log to LOGFILE="/var/log/dump1090-mutability.log" # # Receiver options # # RTLSDR device index or serial number to use # If set to "none", dump1090 will be started in --net-only mode DEVICE="" # RTLSDR gain in dB. # If set to "max" (the default) the maximum supported gain is used. # If set to "agc", the tuner AGC is used to set the gain. GAIN=43 [COLOR="#FF0000"][B]# RTLSDR frequency correction in PPM PPM="0"[/B][/COLOR] # # Decoding options # # If yes, fixes messages with correctable CRC errors. FIX_CRC="yes" # If set, supplies a reference location for local position decoding. LAT="xx.xxxx" LON="yy.yyyy" # If set, provides the absolute maximum receiver range used to # filter bad position reports, and to determine when local position # decoding is safe to use. Specify this in nautical miles (NM). MAX_RANGE="360" # # Networking options # # Port to listen on for raw (AVR-format) input connections. 0 disables. RAW_INPUT_PORT="30001" # Port to listen on for raw (AVR-format) output connections. 0 disables. RAW_OUTPUT_PORT="30002" # Port to listen on for SBS-format output connections. 0 disables. SBS_OUTPUT_PORT="30003" # Port to listen on for Beast-format input connections. 0 disables. BEAST_INPUT_PORT="30004,30104" # Port to listen on for Beast-format output connections. 0 disables. BEAST_OUTPUT_PORT="30005" # TCP heartbeat interval in seconds. 0 disables. NET_HEARTBEAT="60" # Minimum output buffer size per write, in bytes. NET_OUTPUT_SIZE="500" # Maximum buffering time before writing, in seconds. NET_OUTPUT_INTERVAL="1" # TCP buffer size, in bytes NET_BUFFER="262144" # Bind ports on a particular address. If unset, binds to all interfaces. # This defaults to binding to localhost. If you need to allow remote # connections, change this. NET_BIND_ADDRESS="" # # Misc options # # Interval (in seconds) between logging stats to the logfile. 0 disables. STATS_INTERVAL="3600" # Path to write json state to (for use with an external webserver). Blank disables. JSON_DIR="/run/dump1090-mutability" # Interval between writing json state (in seconds). 0 disables. JSON_INTERVAL="1" # Accuracy of receiver location to write to json state, one of "exact" / "approximate" / "none" JSON_LOCATION_ACCURACY="approximate" # Set to yes to log all decoded messages # This can get large fast! LOG_DECODED_MESSAGES="no" # Additional options that are passed to the Daemon. EXTRA_ARGS=""
pi@orangepipc:~$ sudo nano /etc/default/dump1090-fa
# dump1090-fa configuration # This is sourced by /usr/share/dump1090-fa/start-dump1090-fa as a # shellscript fragment. # If you are using a PiAware sdcard image, this config file is regenerated # on boot based on the contents of piaware-config.txt; any changes made to this # file will be lost. # dump1090-fa won't automatically start unless ENABLED=yes ENABLED=yes RECEIVER_OPTIONS="--device-index 0 --gain 38 [COLOR="#FF0000"][B]--ppm 0[/B][/COLOR] --net-bo-port 30005" DECODER_OPTIONS="--max-range 360" NET_OPTIONS="--net --net-heartbeat 60 --net-ro-size 1000 --net-ro-interval 1 --net-ri-port 0 --net-ro-port 30002 --net-sbs-port 30003 --net-bi-port 30004,30104 --net-bo-port 30005" JSON_OPTIONS="--json-location-accuracy 1"
sudo piaware-config rtlsdr-ppm xx sudo systemctl restart piaware #Better reboot sudo reboot
sudo nano /etc/fr24feed.ini
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