# 2 raspberry pi 4, 2 dongle don't function **URL:** \ **Category:** ADS-B Flight Tracking\ **Created:** [December 21, 2020, 6:13pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063 "2020-12-21T18:13:44Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![ssrdc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ssrdc/32/56907_2.png) [@ssrdc](https://discussions.flightaware.com/u/ssrdc)\ **Post date:** [December 21, 2020, 6:13pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/1 "2020-12-21T18:13:45Z")
two different raspberry pi 4, each connected to a nooelec v2 dongle don’t reveal the latter, and writing lsusb I get: `Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub` I tried to change the port on one of the two raspberry, and I’m sure that both dongles work. On the software side I have tried several times to restart the raspberry, to install and reinstall rtl-sdr and dump1090-fa (also to uninstall the latter), to install the udev rules and to manually install rtl-sdr. dmesg | grep usb `[0.128801] usbcore: registered new interface driver usbfs [0.128883] usbcore: registered new interface driver hub [0.128998] usbcore: registered new device driver usb [1.121607] usbcore: registered new interface driver r8152 [1.121672] usbcore: registered new interface driver lan78xx [1.121741] usbcore: registered new interface driver smsc95xx [1.125725] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bc dDevice= 5.04 [1.125741] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber= 1 [1.125756] usb usb1: Product: xHCI Host Controller [1.125770] usb usb1: Manufacturer: Linux 5.4.51-v7l+ xhci-hcd [1.125784] usb usb1: SerialNumber: 0000:01:00.0 [1.127472] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bc dDevice= 5.04 [1.127488] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber= 1 [1.127503] usb usb2: Product: xHCI Host Controller [1.127517] usb usb2: Manufacturer: Linux 5.4.51-v7l+ xhci-hcd [1.127531] usb usb2: SerialNumber: 0000:01:00.0 [1.130324] usbcore: registered new interface driver uas [1.130429] usbcore: registered new interface driver usb-storage [1.140321] usbcore: registered new interface driver usbhid [1.140333] usbhid: USB HID core driver [1.490593] usb 1-1: new high-speed USB device number 2 using xhci_hcd [1.673186] usb 1-1: New USB device found, idVendor=2109, idProduct=3431, bcd Device= 4.21 [1.673203] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [1.673217] usb 1-1: Product: USB2.0 Hub [2.000578] usb 1-1.2: new high-speed USB device number 3 using xhci_hcd [2.142910] usb 1-1.2: New USB device found, idVendor=0bda, idProduct=2838, b cdDevice= 1.00 [2.142930] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber =3 [2.142946] usb 1-1.2: Product: RTL2838UHIDIR [2.142960] usb 1-1.2: Manufacturer: Realtek [2.142974] usb 1-1.2: SerialNumber: 00000001 [4.646523] usb 1-1.2: dvb_usb_v2: found a 'Realtek RTL2832U reference design ' in warm state [4.821854] usbcore: registered new interface driver brcmfmac [14.706863] usbcore: registered new interface driver dvb_usb_rtl28xxu [14.707199] usb 1-1: USB disconnect, device number 2 [14.707210] usb 1-1.2: USB disconnect, device number 3 ` ---
**Author:** ![foxhunter](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/foxhunter/32/113733_2.png) [@foxhunter](https://discussions.flightaware.com/u/foxhunter)\ **Post date:** [December 21, 2020, 7:54pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/2 "2020-12-21T19:54:44Z")
seem to be that the stick is not recognized. That is what i am getting (using a FA Stick) ona Raspi 4 ``` Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0bda:2832 Realtek Semiconductor Corp. RTL2832U DVB-T Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ``` And this based on your dmesg command: ``` [2.034416] usb 1-1.2: new high-speed USB device number 3 using xhci_hcd [2.176821] usb 1-1.2: New USB device found, idVendor=0bda, idProduct=2832, bcdDevice= 1.00 [2.176868] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [2.176905] usb 1-1.2: Product: RTL2832U [2.176933] usb 1-1.2: Manufacturer: Realtek [2.176972] usb 1-1.2: SerialNumber: 00001000 [4.615730] usb 1-1.2: dvb_usb_v2: found a 'Realtek RTL2832U reference design' in warm state [4.725107] usb 1-1.2: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [4.725176] usb 1-1.2: media controller created [4.786282] usb 1-1.2: DVB: registering adapter 0 frontend 0 (Realtek RTL2832 (DVB-T))... ``` ---
**Author:** ![jonhawkes2030](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/jonhawkes2030/32/137435_2.png) [@jonhawkes2030](https://discussions.flightaware.com/u/jonhawkes2030)\ **Post date:** [December 21, 2020, 8:10pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/3 "2020-12-21T20:10:34Z")
> [@foxhunter](#): > > `[4.725107] usb 1-1.2: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer` This looks like the dongle is not in the blacklist file and it wants to be treated as a TV receiver (hence MPEG2) > [@Raspberry Pi + Docker = From blank SD to feeding in 15 mins](https://discussions.flightaware.com/t/raspberry-pi-docker-from-blank-sd-to-feeding-in-15-mins/17742): > > I am a long time user of FlightAware and a regular ADS-B Feeder via piaware. I am in the process of increasing my number of Raspberry Pi’s and sites and have been keen to have an easy way to get from a blank SD card to a running Pi quickly. Currently running through this process, the amount of work required to set up dump1090, Flightaware piaware, planefinder and flightradar24 on a Raspberry Pi is around 15 minutes. When setting up a new site, there is a little bit of prep work, but I have man… ---
**Author:** ![obj](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/obj/32/118984_2.png) [@obj](https://discussions.flightaware.com/u/obj)\ **Post date:** [December 21, 2020, 8:43pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/4 "2020-12-21T20:43:24Z")
> [@ssrdc](#): > > ```auto > [1.490593] usb 1-1: new high-speed USB device number 2 using xhci_hcd > [1.673186] usb 1-1: New USB device found, idVendor=2109, idProduct=3431, bcd Device= 4.21 > [1.673203] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 > [1.673217] usb 1-1: Product: USB2.0 Hub > [2.000578] usb 1-1.2: new high-speed USB device number 3 using xhci_hcd > [2.142910] usb 1-1.2: New USB device found, idVendor=0bda, idProduct=2838, bcdDevice= 1.00 > [2.142930] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber =3 > [2.142946] usb 1-1.2: Product: RTL2838UHIDIR > [2.142960] usb 1-1.2: Manufacturer: Realtek > [2.142974] usb 1-1.2: SerialNumber: 00000001 > [4.646523] usb 1-1.2: dvb_usb_v2: found a 'Realtek RTL2832U reference design ' in warm state > [4.821854] usbcore: registered new interface driver brcmfmac > [14.706863] usbcore: registered new interface driver dvb_usb_rtl28xxu > [14.707199] usb 1-1: USB disconnect, device number 2 > [14.707210] usb 1-1.2: USB disconnect, device number 3 > > ``` The dongle enumerates, then the hub it’s connected to disconnects unexpectedly. The 2109:3431 hub device at usb 1-1 is, I believe, an internal hub that’s part of the Pi 4 hardware. It shouldn’t be disconnecting. Hardware / power problems? For reference, this is what lsusb on a Pi 4 with nothing connected should look like (note the VIA hub) ```auto Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ``` > [@jonhawkes2030](#): > > This looks like the dongle is not in the blacklist file and it wants to be treated as a TV receiver (hence MPEG2) Doesn’t matter, librtlsdr will detach the kernel driver automatically. The blacklist has not been necessary for quite a while now. ---
**Author:** ![ssrdc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ssrdc/32/56907_2.png) [@ssrdc](https://discussions.flightaware.com/u/ssrdc)\ **Post date:** [December 21, 2020, 9:20pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/5 "2020-12-21T21:20:00Z")
the dongles work, and the two raspberry have different power supplies, both with 5.1 V and 3 A. It seems really strange that both do not work except for some configuration problem. ---
**Author:** ![foxhunter](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/foxhunter/32/113733_2.png) [@foxhunter](https://discussions.flightaware.com/u/foxhunter)\ **Post date:** [December 21, 2020, 9:35pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/6 "2020-12-21T21:35:08Z")
> [@jonhawkes2030](#): > > This looks like the dongle is not in the blacklist file and it wants to be treated as a TV receiver (hence MPEG2) As long as the device is running perfect, i don’t care I never needed to change here something since i am operating the feeders ---
**Author:** ![obj](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/obj/32/118984_2.png) [@obj](https://discussions.flightaware.com/u/obj)\ **Post date:** [December 22, 2020, 7:44am UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/7 "2020-12-22T07:44:34Z")
> [@ssrdc](#): > > the dongles work, How do you know that the dongles work? ---
**Author:** ![ssrdc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ssrdc/32/56907_2.png) [@ssrdc](https://discussions.flightaware.com/u/ssrdc)\ **Post date:** [December 22, 2020, 8:02am UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/8 "2020-12-22T08:02:23Z")
With a windows computer they work ---
**Author:** ![wiedehopf](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/wiedehopf/32/114045_2.png) [@wiedehopf](https://discussions.flightaware.com/u/wiedehopf)\ **Post date:** [December 22, 2020, 5:27pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/9 "2020-12-22T17:27:58Z")
Sounds like a power issue. 1 SDR works? Can you connect both directly to the Pi4? This should return nothing: ```auto sudo dmesg --ctime | grep voltage ``` If you get any undervoltage messages from the above then that is a likely issue. ---
**Author:** ![ssrdc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ssrdc/32/56907_2.png) [@ssrdc](https://discussions.flightaware.com/u/ssrdc)\ **Post date:** [December 22, 2020, 8:51pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/10 "2020-12-22T20:51:16Z")
A raspberry after turning it off for two days, it started working again, I don’t know based on what. I think I’ll try to do the same thing with the other too. I have a question. I have a raspberry which has a really poor connection, and as it’s a secondary site I don’t need to know much directly from it. Is there a way to reduce the bandwidth used and route the multilateration results directly to an ip address, thus reducing the data used? ---
**Author:** ![foxhunter](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/foxhunter/32/113733_2.png) [@foxhunter](https://discussions.flightaware.com/u/foxhunter)\ **Post date:** [December 22, 2020, 8:55pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/11 "2020-12-22T20:55:33Z")
What is “really poor” connection? The traffic used for FA is pretty low. My secondary device logged 400 MB in the hast 17 days ---
**Author:** ![tech0](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/tech0/32/113380_2.png) [@tech0](https://discussions.flightaware.com/u/tech0)\ **Post date:** [December 22, 2020, 9:35pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/12 "2020-12-22T21:35:41Z")
@ssrdc You are seeing about 700 flights per day. Yesterday I saw about 2100 flights. My measured bandwidth consumption was 210 MB. If the relationship is linear your bandwidth consumption should be about 70 MB. I use vnstat and vnstati, handy bandwidth monitoring and graphing tools. Get them here: sudo apt install vnstat sudo apt install vnstati ---
**Author:** ![foxhunter](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/foxhunter/32/113733_2.png) [@foxhunter](https://discussions.flightaware.com/u/foxhunter)\ **Post date:** [December 23, 2020, 6:18am UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/13 "2020-12-23T06:18:59Z")
darkstat is a good graphical overview showing the traffic per remote host [Darkstat - A Web Based Linux Network Traffic Analyzer (tecmint.com)](https://www.tecmint.com/darkstat-web-based-linux-network-traffic-analyzer/) ---
**Author:** ![ssrdc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ssrdc/32/56907_2.png) [@ssrdc](https://discussions.flightaware.com/u/ssrdc)\ **Post date:** [December 23, 2020, 5:52pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/14 "2020-12-23T17:52:23Z")
My question is flightaware sends the results to my secondary site and then the primary site via port 30105 connects to the other site and downloads the data. There is a way for flightaware to send them directly to the primary site without going through the secondary one, so that the latter does not use other bandwidth. ---
**Author:** ![obj](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/obj/32/118984_2.png) [@obj](https://discussions.flightaware.com/u/obj)\ **Post date:** [December 23, 2020, 7:27pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/15 "2020-12-23T19:27:00Z")
No, that isn’t possible. But the downstream bandwidth for mlat results is small compared to the upstream bandwidth needed for mlat raw messages & ADS-B reports. If you are trying to reduce bandwidth, the first thing to try is turning off mlat. ---
**Author:** ![ssrdc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ssrdc/32/56907_2.png) [@ssrdc](https://discussions.flightaware.com/u/ssrdc)\ **Post date:** [December 23, 2020, 8:40pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/16 "2020-12-23T20:40:29Z")
Ok do nothing, thanks for the information. I believe that many other people like me, who do not have a single antenna, perhaps in a remote site, would like to use this configuration, consider it as a possible upgrade. Others questions: Of small antennas like this: [https://thepihut.com/products/3dbi-ads-b-1090mhz-sma-antenna-w-magnetic-base?variant=20063046926398](https://thepihut.com/products/3dbi-ads-b-1090mhz-sma-antenna-w-magnetic-base?variant=20063046926398), which one is best? do you have others to recommend to buy in europe? @abcd567 I had tar1090 configured and working with the history function as in adsbexchange, until a few days ago, around December 15th, it stopped working. I went to see on github and in the wiki, the commands to install the dev version have changed, i tried to reinstall readsb using those but it still doesn’t work. is it my problem or about December 15th some updates came out? @wiedehopf ---
**Author:** ![abcd567](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/abcd567/32/113769_2.png) [@abcd567](https://discussions.flightaware.com/u/abcd567)\ **Post date:** [December 23, 2020, 9:29pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/17 "2020-12-23T21:29:15Z")
> [@ssrdc](#): > > Of small antennas like this: [https://thepihut.com/products/3dbi-ads-b-1090mhz-sma-antenna-w-magnetic-base?variant=20063046926398](https://thepihut.com/products/3dbi-ads-b-1090mhz-sma-antenna-w-magnetic-base?variant=20063046926398), which one is best? do you have others to recommend to buy in europe? @abcd567 I will recommend you purchase Flightaware 26 inch 1090 Mhz antenna from PiHut. [**https://thepihut.com/products/flightaware-1090mhz-ads-b-antenna-66cm-26in**](https://thepihut.com/products/flightaware-1090mhz-ads-b-antenna-66cm-26in) If you want a low cost antenna, then the one you have linked from “PiHut”, a reputeable supplier, so most likely this mag mount antenna will have gain as advertised. I have purchased 3 similar antennas from Chinese sellers on ebay. Each was similar to the PiHut one but with different dimensions. Two were advertised as 5dBi and one as 3 dBi. One performed same as the straight whipped mag mount of genric dvbt,and two performed worst than the mag mount whip of generic dvbt. If you want a cheap solution, go for a DIY Spider made of Coax only. You will need an adapter (or better a pigtail for flexibility) with F-female and SMA-male connectors at opposite ends. ### [QUICK SPIDER - No Soldering, No Connector](https://discussions.flightaware.com/t/quick-spider-no-soldering-no-connector/19181)   ---
**Author:** ![foxhunter](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/foxhunter/32/113733_2.png) [@foxhunter](https://discussions.flightaware.com/u/foxhunter)\ **Post date:** [December 24, 2020, 7:48am UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/18 "2020-12-24T07:48:36Z")
> [@ssrdc](#): > > Of small antennas like this This is a good starting point. You can unscrew the tip and replace it with a wire in the correct length. That’s the antenna i started with. Beside the FA-Antenna mentioned by abcd my vote clearly goes to the A2 antenna of Jetvision. I am using this one since April and it works without issues. As far as i know Flightaware is delivering it with it’s FlightFeeders in Germany. A little more expensive, but worth the money. ---
**Author:** ![ssrdc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ssrdc/32/56907_2.png) [@ssrdc](https://discussions.flightaware.com/u/ssrdc)\ **Post date:** [December 24, 2020, 7:04pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/19 "2020-12-24T19:04:25Z")
Thanks for all the information I already have four flightaware antennas, what I am looking for now is a small antenna, not too expensive but that has a good performance. ---
**Author:** ![system](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/system/32/38558_2.png) [@system](https://discussions.flightaware.com/u/system)\ **Post date:** [December 24, 2021, 7:04pm UTC](https://discussions.flightaware.com/t/2-raspberry-pi-4-2-dongle-dont-function/72063/20 "2021-12-24T19:04:29Z")
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