# Rtl\_test -t Failure **URL:** \ **Category:** ADS-B Flight Tracking\ **Created:** [January 27, 2019, 9:55am UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212 "2019-01-27T09:55:15Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![ht110](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ht110/32/31559_2.png) [@ht110](https://discussions.flightaware.com/u/ht110)\ **Post date:** [January 27, 2019, 9:55am UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/1 "2019-01-27T09:55:15Z")
hi, i need help: rtl\_test -t Found 1 device(s): 0: Realtek, DVB-T Dongle, SN: 00000991 Using device 0: Dexatek DK DVB-T Dongle (Logilink VG0002A) usb\_claim\_interface error -6 Failed to open rtlsdr device #0. lsusb Bus 001 Device 004: ID 1d19:1101 Dexatek Technology Ltd. DK DVB-T Dongle rtl-sdr is already the newest version (0.5.3-11+rpt1). sudo systemctl stop dump1090-fa ok rtl\_test -t Found 1 device(s): 0: Realtek, DVB-T Dongle, SN: 00000991 Using device 0: Dexatek DK DVB-T Dongle (Logilink VG0002A) Found Fitipower FC0013 tuner Supported gain values (23): -9.9 -7.3 -6.5 -6.3 -6.0 -5.8 -5.4 5.8 6.1 6.3 6.5 6.7 6.8 7.0 7.1 17.9 18.1 18.2 18.4 18.6 18.8 19.1 19.7 Sampling at 2048000 S/s. No E4000 tuner found, aborting. why i can’t choose the DVB-T Dongle. The Radio-Button is yellow … ---
**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:** [January 27, 2019, 10:16am UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/2 "2019-01-27T10:16:53Z")
> [@ht110](#): > > Found Fitipower FC0013 tuner The Fitipower chip is the reason. You need a dongle with Realtec chips: **RTL2832U + R820T2** The tuner chip should be R820T or R820T2. The Fitipower tuner chips FC0012 & FC0013 do NOT cover 1090Mhz ---
**Author:** ![ht110](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ht110/32/31559_2.png) [@ht110](https://discussions.flightaware.com/u/ht110)\ **Post date:** [January 27, 2019, 10:29am UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/3 "2019-01-27T10:29:07Z")
● dump1090-fa.service - dump1090 ADS-B receiver (FlightAware customization) Loaded: loaded (/lib/systemd/system/dump1090-fa.service; enabled; vendor preset: enabled) Active: active (running) since Sun 2019-01-27 11:00:58 CET; 17min ago Docs: [PiAware - ADS-B and MLAT Receiver - FlightAware](https://flightaware.com/adsb/piaware/) Main PID: 487 (dump1090-fa) CGroup: /system.slice/dump1090-fa.service └─487 /usr/bin/dump1090-fa --net-bo-port 30005 --fix --device-index 0 --gain -10 --ppm 0 --max-range 360 --net --net-heartbeat 60 --net-ro-size 1000 --net-ro-interva Jan 27 11:00:58 piaware systemd[1]: Started dump1090 ADS-B receiver (FlightAware customization). Jan 27 11:00:58 piaware dump1090-fa[487]: Sun Jan 27 11:00:58 2019 CET dump1090-fa 3.6.3 starting up. Jan 27 11:00:58 piaware dump1090-fa[487]: rtlsdr: using device #0: Dexatek DK DVB-T Dongle (Logilink VG0002A) (Realtek, DVB-T Dongle, SN 00000991) Jan 27 11:00:58 piaware dump1090-fa[487]: Detached kernel driver Jan 27 11:00:59 piaware dump1090-fa[487]: Found Fitipower FC0013 tuner Jan 27 11:00:59 piaware dump1090-fa[487]: rtlsdr: enabling tuner AGC #### based on Realtek 2832U Chip, that ist not the problem ---
**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:** [January 27, 2019, 10:37am UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/4 "2019-01-27T10:37:13Z")
What is the output of this command? ```auto sudo systemctl status piaware ``` ---
**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:** [January 27, 2019, 11:46am UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/5 "2019-01-27T11:46:32Z")
> [@abcd567](#): > > The Fitipower chip is the reason. > You need a dongle with Realtec chips: > **RTL2832U + R820T2** > [@ht110](#): > > based on Realtek 2832U Chip, that ist not the problem abcd is correct. The problem is not the 2832 (all these dongles have a 2832), the problem is the FC0013 tuner chip. The FC0013 can’t tune to 1090MHz. ---
**Author:** ![ht110](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ht110/32/31559_2.png) [@ht110](https://discussions.flightaware.com/u/ht110)\ **Post date:** [January 27, 2019, 12:14pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/6 "2019-01-27T12:14:52Z")
> [@abcd567](#): > > sudo systemctl status piaware sudo systemctl status piaware ● piaware.service - FlightAware ADS-B uploader Loaded: loaded (/lib/systemd/system/piaware.service; enabled; vendor preset: enabled) Active: active (running) since Sun 2019-01-27 11:09:24 CET; 2h 19min ago Docs: [PiAware - ADS-B and MLAT Receiver - FlightAware](https://flightaware.com/adsb/piaware/) Main PID: 1113 (piaware) CGroup: /system.slice/piaware.service ├─1113 /usr/bin/piaware -p /run/piaware/piaware.pid -plainlog -statusfile /run/piaware/status.json ├─2097 /usr/lib/piaware/helpers/faup1090 --net-bo-ipaddr localhost --net-bo-port 30005 --stdout --lat 5x.xxx --lon 1y.yyy └─2110 /usr/lib/piaware/helpers/fa-mlat-client --input-connect localhost:30005 --input-type dump1090 --results beast,connect,localhost:30104 --results beast,listen,3 Jan 27 13:21:32 piaware sudo[2102]: pam\_unix(sudo:session): session closed for user root Jan 27 13:21:32 piaware piaware[1113]: Starting multilateration client: /usr/lib/piaware/helpers/fa-mlat-client --input-connect localhost:30005 --input-type dump1090 --results Jan 27 13:21:33 piaware piaware[1113]: mlat-client(2110): fa-mlat-client 0.2.10 starting up Jan 27 13:21:33 piaware piaware[1113]: mlat-client(2110): Using UDP transport to xy.42.6.191 port 5624 Jan 27 13:21:33 piaware piaware[1113]: mlat-client(2110): Listening for Beast-format results connection on port 30105 Jan 27 13:21:33 piaware piaware[1113]: mlat-client(2110): Listening for Extended Basestation-format results connection on port 30106 Jan 27 13:21:33 piaware piaware[1113]: mlat-client(2110): Input connected to localhost:30005 Jan 27 13:21:33 piaware piaware[1113]: mlat-client(2110): Input format changed to BEAST, 12MHz clock Jan 27 13:21:33 piaware piaware[1113]: mlat-client(2110): Beast-format results connection with ::1:30104: connection established Jan 27 13:24:59 piaware piaware[1113]: 4 msgs recv’d from dump1090-fa (1 in last 5m); 4 msgs sent to FlightAware ---
**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:** [January 27, 2019, 12:45pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/7 "2019-01-27T12:45:44Z")
> [@obj](#): > > FC0013 Apparently it can tune to 1090 MHz, the performance is just very very very bad. Comment on reddit: > After poking around Google for a few, it looks as if the FC0013 tuner is absolutely horrid at 1090Mhz reception, compared to a R820T one review shows it only being able to receive ~3 messages per second vs ~30 with a R820T and it also seems to have a lot of gain and noise problems, UHF especially. > > You likely won’t be able to receive ads-b with that. > (from [Reddit - Dive into anything](https://www.reddit.com/r/RTLSDR/comments/44l7g3/fc0013_and_adsb/)) That explains the very few messages you do seem to get, but you will never have good reception with that dongle. In other words: get another dongle that works. Preferably get a a blue Flightaware Pro Stick Plus. (in Germany: [https://www.rasppishop.de/FlightAware-Pro-Stick-Plus-1090MHz-ADS-B](https://www.rasppishop.de/FlightAware-Pro-Stick-Plus-1090MHz-ADS-B)) Or a rtl-sdr blog v3 dongle (and combine it with their LNA if you want really good reception) ([Buy RTL-SDR Dongles (RTL2832U)](https://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/)) Which antenna are you using? You might want to look into building one yourself: ([QUICK SPIDER - No Soldering, No Connector](https://discussions.flightaware.com/t/quick-spider-no-soldering-no-connector/19181)) You could for example use this cable to build the mentioned antenna: [https://www.amazon.de/gp/product/B00A8FUX40/](https://www.amazon.de/gp/product/B00A8FUX40/) It already has an SMA connector to connect it to the receiver. Don’t bother with the small whip antennas with magnetic base, they are just bad. Another alternative are printed circuit board antennas from ebay [https://www.ebay.de/itm/1pcs-ADS-B-PCB-Antenna-1090MHz-Antenna-SMA-female-Antenne-CASE/253915016420](https://www.ebay.de/itm/1pcs-ADS-B-PCB-Antenna-1090MHz-Antenna-SMA-female-Antenne-CASE/253915016420) (needs a male to male SMA adapter though to connect it: [https://www.amazon.de/adaptare-60337-Adapter-SMA-Stecker-auf/dp/B004NEHTIU](https://www.amazon.de/adaptare-60337-Adapter-SMA-Stecker-auf/dp/B004NEHTIU)) Or of course the excellent Flightaware antenna is probably your best option, quite a bit pricier though. Good luck 🙂 ---
**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:** [January 27, 2019, 2:10pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/8 "2019-01-27T14:10:36Z")
**FC0012:** 22 – 948.6 MHz **FC0013:** 22 – 1100 MHz 1090 Mhz is outside the range of FC0012 1090 Mhz is just at the upper border of FC0013, and FC0013 has proved to perform very poor for 1090 Mhz. ---
**Author:** ![ht110](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/ht110/32/31559_2.png) [@ht110](https://discussions.flightaware.com/u/ht110)\ **Post date:** [January 27, 2019, 2:36pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/9 "2019-01-27T14:36:00Z")
ok, here is a FC0013. At first i will change the antenna, then I buy an new dongle. I will see the first tracks. ---
**Author:** ![biekerc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/biekerc/32/136579_2.png) [@biekerc](https://discussions.flightaware.com/u/biekerc)\ **Post date:** [January 27, 2019, 3:23pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/10 "2019-01-27T15:23:35Z")
Another dongle option, AirNav sell a pretty cheap receiver with an amplifier/filter, nothing special but probably a bit better than those generic dongles. > **[AirNav RadarBox - Global Flight Tracking Intelligence | Live Flight Tracker...](https://www.radarbox.com/store)** > > Real-time flight tracking with one of the best and most accurate ADS-B coverage worldwide. Check airport arrivals and departures status and aircraft history. The rtlsdr-blog dongle and 1090 lna - combo has worked very well for me. That is in combination with the FA antenna. ---
**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:** [January 27, 2019, 3:39pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/11 "2019-01-27T15:39:08Z")
> [@biekerc](#): > > Another dongle option, AirNav sell a pretty cheap receiver with an amplifier/filter, nothing special but probably a bit better than those generic dongles. Although I dont need any more dongles (have enough spare ones), out of curiocity I ordered it last week. As the stock at Amazon has finished, I had to order it directly from Radarbox24. Lost the advantage of Amazon Prime, had to pay $4.99 shipping in addition to $9.95 price. Two weeks delivery period by Royal Mail. Still waiting delivery. [https://discussions.flightaware.com/t/radarbox-flightstick-vs-flightaware-pro-stick-plus/44824/3](https://discussions.flightaware.com/t/radarbox-flightstick-vs-flightaware-pro-stick-plus/44824/3) ---
**Author:** ![biekerc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/biekerc/32/136579_2.png) [@biekerc](https://discussions.flightaware.com/u/biekerc)\ **Post date:** [January 27, 2019, 4:14pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/12 "2019-01-27T16:14:39Z")
Well I just got mine, shipped from Milton Keynes. All I can say right now, it is quite small compared to the FA dongles, very green and has a bright white led. 🙂 I mentioned it because the FA dongles are not sold via amazon in Europe and therefore rather expensive, eg the orange dongle costs 27$ + pp, the blue one 33$ + pp at an online retailer based in Germany. ---
**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:** [January 27, 2019, 4:24pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/13 "2019-01-27T16:24:29Z")
> [@biekerc](#): > > I mentioned it because the FA dongles are not sold via amazon in Europe and therefore rather expensive, eg the orange dongle costs 27$ + pp, the blue one 33$ + pp at an online retailer based in Germany. So i assume AirNav ships to Germany? Where do they ship from do you know? ---
**Author:** ![biekerc](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/biekerc/32/136579_2.png) [@biekerc](https://discussions.flightaware.com/u/biekerc)\ **Post date:** [January 27, 2019, 4:25pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/14 "2019-01-27T16:25:13Z")
Milton Keynes, in the UK, so no customs cost or delay yet… ---
**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:** [January 27, 2019, 4:33pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/15 "2019-01-27T16:33:42Z")
> [@biekerc](#): > > it is quite small compared to the FA dongles, very green These were my comments as well, but only by seeing dongle’s photo. Still awaiting delivery by Royal Mail (if Royal Mail is UK postal service, then my dongle is also shipped from UK) > [@RadarBox FlightStick vs. FlightAware Pro Stick Plus](https://discussions.flightaware.com/t/radarbox-flightstick-vs-flightaware-pro-stick-plus/44824/3): > > **I did not need to purchase any more dongles as I already have enough spare dongles. I purchased it because:** > > - Out of curiocity > - I like its color and slim shape. ---
**Author:** ![SoNic67](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/sonic67/32/119872_2.png) [@SoNic67](https://discussions.flightaware.com/u/SoNic67)\ **Post date:** [January 27, 2019, 7:16pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/16 "2019-01-27T19:16:49Z")
> [@abcd567](#): > > Although I dont need any more dongles (have enough spare ones), out of curiocity I ordered it last week You could sell those to get an airspy mini 😃 ---
**Author:** ![idh](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/idh/32/113363_2.png) [@idh](https://discussions.flightaware.com/u/idh)\ **Post date:** [January 27, 2019, 9:22pm UTC](https://discussions.flightaware.com/t/rtl-test-t-failure/45212/17 "2019-01-27T21:22:09Z")
Ordered a RadarBox Flightstick. Just a few days for delivery. Comes in a very BIG box so will not fit through a UK letter box. Initial impression is that it certainly more sensitive than an older RTL-SDR dongle. No time to do a direct comparison but for $9-95 plus $4-99 postage seems worth trying (=£12-04). Does run hot so maybe will not last long.