Originally posted by HermanZA
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Raspberry Pi type B + DVB-T Dongle to feed FR24
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Originally posted by andyk1 View PostYes as the comment above... You may need to manually set your gain settings. Mine is set to about "--gain 33" In auto gain I see only a few. I have no idea why some see all aircraft in auto settings and some of us have to set a gain value. I suspect it has something to do with how our antenna is constructed.T-EGUB1
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Originally posted by peterhr View PostDo you also provide the details GAS for them to update their database?
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The "--enable-agc" parameter seems to be related to the RTL2832U chip, and the "--gain xx" parameter (xx=34 for me, but value may vary case by case) is related to the R820T tuner. Both can be set without conflict between them. The documentation says that Automatic Gain Control (AGC) for the R820T can be set with "--gain -100" parameter , but it didn't worked, at least in my case. If no "--gain xx" is set, the tuner works with the maximum possible gain (around 49 dB); it seems to work better with a lower gain.T-SABE8 - Raspberry Pi + RTL2832U / R820T USB + dump1090
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Originally posted by HermanZA View PostI doubt that the Lite version shares to the MotherShip. Wish it could, cause I wont mind sharing, but does not look like it has an export function. We have a kind of Master List for SA Aircraft we tend to use as well to populate the local DB's.
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Originally posted by SAFlyer View PostUse modesmixer to combine the signals from each of your dongles on the Pi - this works brilliantly!
Please clarify if you are using two or more RTL-SDR USB "dongles" connected to the same RPi; and if possible please comment about your hardware and software setup (for instance, do you run more than one instance of dump1090 at the same time?).
Thanks in advance, best regards.T-SABE8 - Raspberry Pi + RTL2832U / R820T USB + dump1090
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Originally posted by Andres View PostHi SAFlyer!
Please clarify if you are using two or more RTL-SDR USB "dongles" connected to the same RPi; and if possible please comment about your hardware and software setup (for instance, do you run more than one instance of dump1090 at the same time?).
Thanks in advance, best regards.
Code:./dump1090 --device-index 0 --net --net-sbs-port 30003 --net-ro-port 31001 --net-bo-port 30005 --quiet > /dev/null & ./dump1090 --device-index 1 --net --net-sbs-port 30004 --net-ro-port 31002 --net-bo-port 30006 --quiet > /dev/null &
The output of the dump1090's are then combined using modesmixer as follows:
Code:./modesmixer2 --inConnect 192.***.0.***:31001 --inConnect 192.***.0.***:31002 --outServer sbs10001:10001
Last edited by SAFlyer; 2014-03-12, 15:34.
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Originally posted by SAFlyer View PostI am using 2 dongles connected to a powered USB hub which in turn is connected to the Pi. Here is the part of the script which utilises dump1090
Code:./dump1090 --device-index 0 --net --net-sbs-port 30003 --net-ro-port 31001 --net-bo-port 30005 --quiet > /dev/null & ./dump1090 --device-index 1 --net --net-sbs-port 30004 --net-ro-port 31002 --net-bo-port 30006 --quiet > /dev/null &
The output of the dump1090's are then combined using modesmixer as follows:
Code:./modesmixer2 --inConnect 192.***.0.***:31001 --inConnect 192.***.0.***:31002 --outServer sbs10001:10001
Best regards
AndresT-SABE8 - Raspberry Pi + RTL2832U / R820T USB + dump1090
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Originally posted by Andres View PostThank you for your answer. Was it neccessary to access the "dongles" with an EEPROM command to write a different ID number on each, to made them recoginzable with different device_index values? Or it's just a function of USB enumeration to give different device_index values to the "dongles" automatically?
Best regards
Andres
Code:pi@raspbpi ~ $ rtl_test Found 2 device(s): 0: Realtek, RTL2838UHIDIR, SN: 00000001 1: Realtek, RTL2838UHIDIR, SN: 00000001
Code:./dump1090 --device-index 0 ./dump1090 --device-index 1
Code:--net-ro-port 31001 --net-ro-port 31002
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Originally posted by HermanZA View PostHow do you go about in combining the ADS-B data from them, or do you do it on DUMP?
Andy
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Originally posted by Andres View PostThe "--enable-agc" parameter seems to be related to the RTL2832U chip, and the "--gain xx" parameter (xx=34 for me, but value may vary case by case) is related to the R820T tuner. Both can be set without conflict between them. The documentation says that Automatic Gain Control (AGC) for the R820T can be set with "--gain -100" parameter , but it didn't worked, at least in my case. If no "--gain xx" is set, the tuner works with the maximum possible gain (around 49 dB); it seems to work better with a lower gain.
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My pi is running dump1090 and another process. I've tried to run VirtualRadarServer too, via mono, but that kills the box. I'm pretty sad, I needed VRS for a database creation.
BTW peterhr, did you move/remove the documentation from google drive. My bookmark gives me "Empty folder".
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Originally posted by loplo View PostMy pi is running dump1090 and another process. I've tried to run VirtualRadarServer too, via mono, but that kills the box. I'm pretty sad, I needed VRS for a database creation.
BTW peterhr, did you move/remove the documentation from google drive. My bookmark gives me "Empty folder".
(don't bookmark this - I might change it again - refer to post 8)
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