# It's failed, again ☹ **URL:** \ **Category:** ADS-B Flight Tracking\ **Created:** [August 27, 2019, 8:27am UTC](https://discussions.flightaware.com/t/its-failed-again/54231 "2019-08-27T08:27:58Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 8:27am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/1 "2019-08-27T08:27:58Z")
So after a couple of days solid performance I checked just a while ago and find my airspy/pi/piaware 3.7.1 system is down again. It’s the same failure that I thought I had caused by making a bad setting however this time nothing has been touched. I rebooted, and waited but l I have the same problem. Below is what i get for a piaware-status and a sudo journalctl -u piaware | grep -v ‘reported location|–lat|feeder ID’ Thanks for any ideas Martin 1090 Receiver: warning: Connected to Mode S receiver, but no recent data seen. pi@piaware:~ $ piaware-status PiAware master process (piaware) is running with pid 1487. PiAware ADS-B client (faup1090) is running with pid 1534. PiAware ADS-B UAT client (faup978) is not running. PiAware mlat client (fa-mlat-client) is running with pid 1543. Local ADS-B receiver (beast-splitter) is running with pid 388. beast-splitter (pid 388) is listening for connections on port 30005. no program appears to be listening for connections on port 30978. faup1090 is connected to the ADS-B receiver. faup978 is NOT connected to the ADS-B UAT receiver. piaware is connected to FlightAware. got ‘couldn’t open socket: connection refused’ the ADS-B data program at localhost/29999 is NOT producing data on localhost:29999. got ‘couldn’t open socket: connection refused’ pi@piaware:~ $ sudo journalctl -u piaware | grep -v ‘reported location|–lat|feeder ID’ – Logs begin at Tue 2019-08-27 14:54:15 +07, end at Tue 2019-08-27 15:25:38 +07. – Aug 27 14:54:25 piaware systemd[1]: Started FlightAware ADS-B uploader. Aug 27 14:54:28 piaware piaware[399]: creating pidfile /run/piaware/piaware.pid Aug 27 14:54:28 piaware piaware[399]: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Aug 27 14:54:28 piaware piaware[399]: piaware version 3.7.1 is running, process ID 399 Aug 27 14:54:28 piaware piaware[399]: your system info is: Linux piaware 4.19.66-v7+ #1253 SMP Thu Aug 15 11:49:46 BST 2019 armv7l GNU/Linux Aug 27 14:54:29 piaware piaware[399]: Connecting to FlightAware adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) Aug 27 14:54:29 piaware piaware[399]: Connection to adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) failed: couldn’t open socket: Temporary failure in name resolution Aug 27 14:54:29 piaware piaware[399]: reconnecting in 66 seconds… Aug 27 14:54:32 piaware sudo[628]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:54:32 piaware sudo[628]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:54:32 piaware sudo[628]: pam\_unix(sudo:session): session closed for user root Aug 27 14:54:32 piaware piaware[399]: ADS-B data program ‘beast-splitter’ is listening on port 30005, so far so good Aug 27 14:54:32 piaware piaware[399]: Started faup1090 (pid 636) to connect to beast-splitter Aug 27 14:54:32 piaware piaware[399]: UAT support disabled by local configuration setting: uat-receiver-type Aug 27 14:55:02 piaware piaware[399]: 0 msgs recv’d from beast-splitter; 0 msgs sent to FlightAware Aug 27 14:55:35 piaware piaware[399]: Connecting to FlightAware adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) Aug 27 14:55:35 piaware piaware[399]: Connection with adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) established Aug 27 14:55:36 piaware piaware[399]: TLS handshake with adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) completed Aug 27 14:55:36 piaware piaware[399]: FlightAware server certificate validated Aug 27 14:55:36 piaware piaware[399]: encrypted session established with FlightAware Aug 27 14:55:37 piaware sudo[959]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:55:37 piaware sudo[959]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:55:37 piaware sudo[959]: pam\_unix(sudo:session): session closed for user root Aug 27 14:55:37 piaware piaware[399]: logged in to FlightAware as user hs0zed Aug 27 14:55:37 piaware piaware[399]: site statistics URL: [https://flightaware.com/adsb/stats/user/hs0zed#stats-109298](https://flightaware.com/adsb/stats/user/hs0zed#stats-109298) Aug 27 14:55:38 piaware piaware[399]: multilateration data requested Aug 27 14:55:38 piaware sudo[985]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:55:38 piaware sudo[985]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:55:38 piaware sudo[985]: pam\_unix(sudo:session): session closed for user root Aug 27 14:55:38 piaware piaware[399]: Starting multilateration client: /usr/lib/piaware/helpers/fa-mlat-client --input-connect localhost:30005 --input-type auto --results beast,connect,localhost:30104 --results beast,listen,30105 --results ext\_basestation,listen,30106 --udp-transport 70.42.6.191:8436:2542054443 Aug 27 14:55:39 piaware piaware[399]: mlat-client(998): fa-mlat-client 0.2.10 starting up Aug 27 14:55:39 piaware piaware[399]: mlat-client(998): Using UDP transport to 70.42.6.191 port 8436 Aug 27 14:55:39 piaware piaware[399]: mlat-client(998): Listening for Beast-format results connection on port 30105 Aug 27 14:55:39 piaware piaware[399]: mlat-client(998): Listening for Extended Basestation-format results connection on port 30106 Aug 27 14:55:39 piaware piaware[399]: mlat-client(998): Input connected to localhost:30005 Aug 27 14:55:40 piaware piaware[399]: mlat-client(998): Beast-format results connection with ::1:30104: connection established Aug 27 14:56:50 piaware piaware[399]: timed out waiting for alive message from FlightAware, reconnecting… Aug 27 14:56:50 piaware piaware[399]: multilateration data no longer required, disabling mlat client Aug 27 14:56:51 piaware piaware[399]: fa-mlat-client exited normally Aug 27 14:56:51 piaware piaware[399]: reconnecting in 72 seconds… Aug 27 14:56:51 piaware piaware[399]: mlat-client(998): Disconnecting from localhost:30005: Lost connection to multilateration server, no need for input data Aug 27 14:56:51 piaware piaware[399]: mlat-client(998): Exiting on connection loss Aug 27 14:58:03 piaware piaware[399]: Connecting to FlightAware adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) Aug 27 14:58:03 piaware piaware[399]: Connection with adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) established Aug 27 14:58:04 piaware piaware[399]: TLS handshake with adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) completed Aug 27 14:58:04 piaware piaware[399]: FlightAware server certificate validated Aug 27 14:58:04 piaware piaware[399]: encrypted session established with FlightAware Aug 27 14:58:04 piaware sudo[1450]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:58:04 piaware sudo[1450]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:58:04 piaware sudo[1450]: pam\_unix(sudo:session): session closed for user root Aug 27 14:58:05 piaware piaware[399]: logged in to FlightAware as user hs0zed Aug 27 14:58:05 piaware piaware[399]: site statistics URL: [https://flightaware.com/adsb/stats/user/hs0zed#stats-109298](https://flightaware.com/adsb/stats/user/hs0zed#stats-109298) Aug 27 14:58:05 piaware piaware[399]: multilateration data requested Aug 27 14:58:05 piaware sudo[1462]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:58:05 piaware sudo[1462]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:58:05 piaware sudo[1462]: pam\_unix(sudo:session): session closed for user root Aug 27 14:58:05 piaware piaware[399]: Starting multilateration client: /usr/lib/piaware/helpers/fa-mlat-client --input-connect localhost:30005 --input-type auto --results beast,connect,localhost:30104 --results beast,listen,30105 --results ext\_basestation,listen,30106 --udp-transport 70.42.6.225:5582:766120354 Aug 27 14:58:06 piaware piaware[399]: mlat-client(1470): fa-mlat-client 0.2.10 starting up Aug 27 14:58:06 piaware piaware[399]: mlat-client(1470): Using UDP transport to 70.42.6.225 port 5582 Aug 27 14:58:06 piaware piaware[399]: mlat-client(1470): Listening for Beast-format results connection on port 30105 Aug 27 14:58:06 piaware piaware[399]: mlat-client(1470): Listening for Extended Basestation-format results connection on port 30106 Aug 27 14:58:06 piaware piaware[399]: mlat-client(1470): Input connected to localhost:30005 Aug 27 14:58:07 piaware piaware[399]: mlat-client(1470): Beast-format results connection with ::1:30104: connection established Aug 27 14:58:07 piaware piaware[399]: piaware (process 399) is shutting down because it received a shutdown signal (SIGTERM) from the system… Aug 27 14:58:07 piaware piaware[399]: faup1090 exited with SIG SIGTERM Aug 27 14:58:07 piaware piaware[399]: multilateration data no longer required, disabling mlat client Aug 27 14:58:07 piaware systemd[1]: Stopping FlightAware ADS-B uploader… Aug 27 14:58:07 piaware piaware[399]: fa-mlat-client exited with SIG SIGTERM Aug 27 14:58:07 piaware piaware[399]: removing pidfile /run/piaware/piaware.pid Aug 27 14:58:07 piaware piaware[399]: piaware (process 399) is exiting… Aug 27 14:58:07 piaware systemd[1]: Stopped FlightAware ADS-B uploader. Aug 27 14:58:08 piaware systemd[1]: Started FlightAware ADS-B uploader. Aug 27 14:58:09 piaware piaware[1487]: creating pidfile /run/piaware/piaware.pid Aug 27 14:58:09 piaware piaware[1487]: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Aug 27 14:58:09 piaware piaware[1487]: piaware version 3.7.1 is running, process ID 1487 Aug 27 14:58:09 piaware piaware[1487]: your system info is: Linux piaware 4.19.66-v7+ #1253 SMP Thu Aug 15 11:49:46 BST 2019 armv7l GNU/Linux Aug 27 14:58:10 piaware piaware[1487]: Connecting to FlightAware adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) Aug 27 14:58:11 piaware piaware[1487]: Connection with adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) established Aug 27 14:58:11 piaware piaware[1487]: TLS handshake with adept server at [piaware.flightaware.com/1200](http://piaware.flightaware.com/1200) completed Aug 27 14:58:12 piaware piaware[1487]: FlightAware server certificate validated Aug 27 14:58:12 piaware piaware[1487]: encrypted session established with FlightAware Aug 27 14:58:12 piaware sudo[1503]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:58:12 piaware sudo[1503]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:58:12 piaware sudo[1503]: pam\_unix(sudo:session): session closed for user root Aug 27 14:58:12 piaware sudo[1526]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:58:12 piaware sudo[1526]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:58:12 piaware sudo[1526]: pam\_unix(sudo:session): session closed for user root Aug 27 14:58:12 piaware piaware[1487]: ADS-B data program ‘beast-splitter’ is listening on port 30005, so far so good Aug 27 14:58:12 piaware piaware[1487]: Started faup1090 (pid 1534) to connect to beast-splitter Aug 27 14:58:12 piaware piaware[1487]: UAT support disabled by local configuration setting: uat-receiver-type Aug 27 14:58:13 piaware piaware[1487]: logged in to FlightAware as user hs0zed Aug 27 14:58:13 piaware piaware[1487]: site statistics URL: [https://flightaware.com/adsb/stats/user/hs0zed#stats-109298](https://flightaware.com/adsb/stats/user/hs0zed#stats-109298) Aug 27 14:58:13 piaware piaware[1487]: multilateration data requested Aug 27 14:58:13 piaware sudo[1535]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric Aug 27 14:58:13 piaware sudo[1535]: pam\_unix(sudo:session): session opened for user root by (uid=0) Aug 27 14:58:13 piaware sudo[1535]: pam\_unix(sudo:session): session closed for user root Aug 27 14:58:13 piaware piaware[1487]: Starting multilateration client: /usr/lib/piaware/helpers/fa-mlat-client --input-connect localhost:30005 --input-type auto --results beast,connect,localhost:30104 --results beast,listen,30105 --results ext\_basestation,listen,30106 --udp-transport 70.42.6.191:8462:2480218437 Aug 27 14:58:14 piaware piaware[1487]: mlat-client(1543): fa-mlat-client 0.2.10 starting up Aug 27 14:58:14 piaware piaware[1487]: mlat-client(1543): Using UDP transport to 70.42.6.191 port 8462 Aug 27 14:58:14 piaware piaware[1487]: mlat-client(1543): Listening for Beast-format results connection on port 30105 Aug 27 14:58:14 piaware piaware[1487]: mlat-client(1543): Listening for Extended Basestation-format results connection on port 30106 Aug 27 14:58:14 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 14:58:14 piaware piaware[1487]: mlat-client(1543): Beast-format results connection with ::1:30104: connection established Aug 27 14:58:43 piaware piaware[1487]: 0 msgs recv’d from beast-splitter; 0 msgs sent to FlightAware Aug 27 15:00:44 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:00:44 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:01:47 piaware piaware[1487]: mlat-client(1543): Beast-format results connection with ::1:30104: connection lost Aug 27 15:02:18 piaware piaware[1487]: mlat-client(1543): Beast-format results connection with 127.0.0.1:30104: connection established Aug 27 15:03:14 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:03:14 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:03:43 piaware piaware[1487]: 0 msgs recv’d from beast-splitter (0 in last 5m); 0 msgs sent to FlightAware Aug 27 15:05:44 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:05:44 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:06:26 piaware piaware[1487]: mlat-client(1543): Beast-format results connection with 127.0.0.1:30104: connection lost Aug 27 15:06:56 piaware piaware[1487]: mlat-client(1543): Beast-format results connection with ::1:30104: connection established Aug 27 15:08:14 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:08:14 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:08:43 piaware piaware[1487]: 0 msgs recv’d from beast-splitter (0 in last 5m); 0 msgs sent to FlightAware Aug 27 15:10:44 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:10:44 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:13:14 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:13:14 piaware piaware[1487]: mlat-client(1543): Receiver status: disconnected Aug 27 15:13:14 piaware piaware[1487]: mlat-client(1543): Server status: not synchronized with any nearby receivers Aug 27 15:13:14 piaware piaware[1487]: mlat-client(1543): Receiver: 0.0 msg/s received 0.0 msg/s processed (0%) Aug 27 15:13:14 piaware piaware[1487]: mlat-client(1543): Server: 0.0 kB/s from server 0.0kB/s TCP to server 0.0kB/s UDP to server Aug 27 15:13:14 piaware piaware[1487]: mlat-client(1543): Aircraft: 0 of 0 Mode S, 0 of 0 ADS-B used Aug 27 15:13:14 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:13:43 piaware piaware[1487]: 0 msgs recv’d from beast-splitter (0 in last 5m); 0 msgs sent to FlightAware Aug 27 15:15:44 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:15:44 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:18:14 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:18:14 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:18:43 piaware piaware[1487]: 0 msgs recv’d from beast-splitter (0 in last 5m); 0 msgs sent to FlightAware Aug 27 15:20:44 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:20:44 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:23:15 piaware piaware[1487]: mlat-client(1543): Disconnecting from localhost:30005: No data (not even keepalives) received for 150 seconds Aug 27 15:23:15 piaware piaware[1487]: mlat-client(1543): Input connected to localhost:30005 Aug 27 15:23:43 piaware piaware[1487]: 0 msgs recv’d from beast-splitter (0 in last 5m); 0 msgs sent to FlightAware pi@piaware:~ $ ---
**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:** [August 27, 2019, 8:34am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/2 "2019-08-27T08:34:05Z")
Didn’t you in your last post acknowledge that you need to check the airspy service: ```auto sudo journalctl -u airspy_adsb --no-pager ``` Oh and enclose any log or code you post in ```, like this: ``` text text text ``` ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 8:47am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/3 "2019-08-27T08:47:15Z")
> [@wiedehopf](#): > > sudo journalctl -u airspy\_adsb --no-pager Okay, apologies, I had forgotten about any other checks, probably because it started working and was so happy 😆 Here is the output. ```auto Aug 27 15:44:34 piaware airspy_adsb[1895]: Caught signal 15 Aug 27 15:44:34 piaware systemd[1]: Stopping Airspy ADS-B receiver... Aug 27 15:44:34 piaware airspy_adsb[1895]: Decoding stopped Aug 27 15:44:34 piaware systemd[1]: Stopped Airspy ADS-B receiver. Aug 27 15:44:34 piaware systemd[1]: Started Airspy ADS-B receiver. Aug 27 15:44:34 piaware airspy_adsb[6063]: Multi-threading is not supported in this version. Aug 27 15:44:34 piaware airspy_adsb[6063]: Listening for asavr clients on port 47806 Aug 27 15:44:34 piaware airspy_adsb[6063]: Listening for beast clients on port 47787 Aug 27 15:44:34 piaware airspy_adsb[6063]: Acquired Airspy device with serial 466C64C82C604AC7 Aug 27 15:44:34 piaware airspy_adsb[6063]: Decoding started at 12 MSPS ``` Regards Martin ---
**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:** [August 27, 2019, 8:59am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/4 "2019-08-27T08:59:19Z")
> [@hs0zed](#): > > the ADS-B data program at localhost/29999 is NOT producing data on localhost:29999. > [@hs0zed](#): > > Aug 27 15:44:34 piaware airspy\_adsb[6063]: Listening for beast clients on port 47787 You configured it wrong, the ports don’t match. Change the airspy config to listen for beast on 29999. Then it should work. I’m not sure what you are changing or doing that it would work and then stop working. Seems you mixed the script and the manual guide. They use different ports. ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 9:10am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/5 "2019-08-27T09:10:23Z")
Okay thanks for the information. I think I should go back to the beginning and start again. I should be able to just use the script and not change anything. Is there a suitable reset command I can use. Something that will remove, or undo, anything I might have dome and restore a clean state? Can I just re-run the script command? Thanks Martin ---
**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:** [August 27, 2019, 9:53am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/6 "2019-08-27T09:53:49Z")
> [@hs0zed](#): > > Can I just re-run the script command? Yeah the script will overwrite all the relevant configurations. (Other stuff i do that doesn’t happen but as the settings are simple and you only need to run it if it doesn’t work it overwrites the configuration) ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 10:08am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/7 "2019-08-27T10:08:24Z")
Okay, many thanks, it’s all back on track again. Here’s what I think happened. I fiddled with it, unnecessarily, clearly changing things without knowing what they would do but nothing broke, presumably because the changes I made were not acted on. Until the brown out that happened this morning, right about when the stats show it dropped out. Clearly when it restarted it read my messed up configuration and did what I had told it to do, which was basically to break it. Learning by doing (or breaking) Thanks again Martin ---
**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:** [August 27, 2019, 10:14am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/8 "2019-08-27T10:14:30Z")
Changing gain for example is fine. Just don’t touch the network settings! 🙂 Are you running the airspy without an LNA? (Then leave the gain at 21) What does this look like for you [What is the Maximum Range I can Get?](https://discussions.flightaware.com/t/what-is-the-maximum-range-i-can-get/17248) ? ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 10:34am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/9 "2019-08-27T10:34:00Z")
What it looks like for me is that the circle generated for 10,000 feet is about what I can achieve for all aircraft even at 35,000 feet. The indoor antenna is clearly the problem but now I’m happy the thing essentially works and issues are mostly (all) of my own making I plan to work on something for outside. I’m not convinced the coaxial cable collinear works well, wrong mix of velocity factors, and I’m pretty sure something simple with perhaps a bit more amplification will be more than enough once I get it above roof height even slightly. Longer term I’m thing to put a pi+sdr in a box and mount it out on my tower at around 50 feet. Meantime I keep fiddling. Martin ![map1](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/8/e/8e4e9f06091e8aaf6ba9ff9df0dbe144edb93da7.png) ---
**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:** [August 27, 2019, 10:35am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/10 "2019-08-27T10:35:59Z")
> [@hs0zed](#): > > I’m not convinced the coaxial cable collinear works well, wrong mix of velocity factors To get the full potential from the Airspy, you will need an LNA for 1090 MHz, i would recommend this one: [New Product: RTL-SDR Blog 1090 MHz ADS-B LNA](https://www.rtl-sdr.com/new-product-rtl-sdr-blog-1090-mhz-ads-b-lna/) Best run it at 3 V to 3.5 V so it doesn’t get as hot. I’ve tested and it works fine down to 2 V or so. A 20 Ohm resistor in series will work fine with a 5 V supply, resulting in a voltage under load of around 3 V to 3.5 V. Then you just need a bias-t like this one [Bias Tee Wideband 1mhz-3ghz for Ham Radio RTL SDR LNA Low Noise Amplifier 50vdc for sale online | eBay](https://www.ebay.com/itm/172460255780) to couple the DC into the LNA. And as a reference antenna it shouldn’t be too hard for you to build this: [QUICK SPIDER - No Soldering, No Connector](https://discussions.flightaware.com/t/quick-spider-no-soldering-no-connector/19181) That’s a good baseline antenna. ---
**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:** [August 27, 2019, 10:40am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/11 "2019-08-27T10:40:47Z")
> [@wiedehopf](#): > > I’ve tested and it works fine down to 2 V or so. The gain is dependent on the voltage. Don’t know if that is “fine” for everyone. ---
**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:** [August 27, 2019, 10:41am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/12 "2019-08-27T10:41:53Z")
I’m not asking anyone to run it at 2 V. At 3.3 V it has almost full gain, maybe a couple dB less. But if you start with 30 dB amplification, a couple dB less isn’t a problem. ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 10:49am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/13 "2019-08-27T10:49:45Z")
Yes, a simple ground plane is what I plan to try just sticking out on the balcony to start with, just want to gauge the in-building degradation. I’d prefer to mess around with building rather than just buying. I likely have most of the parts and can soon knock out a quick pcb with scored track striplines as necessary. I’d like to know whats inside some of these commercial amps. My first try, using an MSA-02 MMIC has lots of gain, but lots of noise too. If the drive voltage drops it doesn’t affect the gain too much but as the amp current falls the noise level increases. I wonder also if the cellphone signals are perhaps a problem for the SDR as well. Need to make a 1090 band pass filter. The Airspy is too useful for other stuff though to dedicate for this job. I’m pretty sure a $20 dongle will work well enough. ---
**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:** [August 27, 2019, 10:53am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/14 "2019-08-27T10:53:07Z")
> [@hs0zed](#): > > I’d prefer to mess around with building rather than just buying. I have bought two of those myself, waiting for delivery: [https://www.qorvo.com/products/p/SPF5189Z](https://www.qorvo.com/products/p/SPF5189Z) ---
**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:** [August 27, 2019, 10:56am UTC](https://discussions.flightaware.com/t/its-failed-again/54231/15 "2019-08-27T10:56:57Z")
> [@hs0zed](#): > > . I’d like to know whats inside some of these commercial amps. The rtl-sdr LNA is described on the page i linked i believe. input → High pass filter → LNA first stage → SAW filter → LNA second stage → SAW filter → output Designing high frequency PCBs requires quite some knowledge. But if you just want to tinker, good luck, just don’t expect good performance 😜 One of the problems: Even the components will likely cost you more than just getting that LNA. And the rtl-sdr dongles are even more susceptible to interference, so the LNA is even more importatnt. ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 1:01pm UTC](https://discussions.flightaware.com/t/its-failed-again/54231/16 "2019-08-27T13:01:48Z")
The filtered amp does look very good and truly its an impressive price, I can definitely see getting one. The board design for simple amps and filters seems not too awkward and there is some online information that can be extrapolated to good effect. I’ve learned a lot recently, of course never enough. The GaaS-pHemt that SoNic referenced looks a pretty nice device. My whole work life has been in air traffic ground comms so I’m no stranger to 100-400MHz, 1GHz is definitely more demanding but only because it gets a bit smaller. ---
**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:** [August 27, 2019, 1:38pm UTC](https://discussions.flightaware.com/t/its-failed-again/54231/17 "2019-08-27T13:38:05Z")
> [@hs0zed](#): > > The board design for simple amps and filters seems not too awkward and there is some online information that can be extrapolated to good effect. It’s probably not too complicated. If you can source good SAW filters and amps, i’m sure the rest falls in place. As far as i understand a 2 stage amplifier design helps in avoiding overload by out of band signals while providing lots of amplification. If you are doing your own PCB anyway, you can consider building an amplifier board with an antenna, like this: [![](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/a/8/a81d8a9adc97c1dca000adce13ca4c831d78a70d.jpeg) ](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/a/8/a81d8a9adc97c1dca000adce13ca4c831d78a70d.jpeg) Don’t know about the pitfalls of that though. There are some Chinese clones of this antenna floating around, this below is the original i believe: [https://forum.planefinder.net/threads/very-small-pcb-active-antenna-210-mm-high.224/](https://forum.planefinder.net/threads/very-small-pcb-active-antenna-210-mm-high.224/) ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 2:39pm UTC](https://discussions.flightaware.com/t/its-failed-again/54231/18 "2019-08-27T14:39:53Z")
Yes this looks very interesting. I’ve seen the Chinese ones on Lazada here. The original F5ANN/F1OPA plans including schematic and board layout are on the web though here [https://sites.google.com/site/vincentf1opa/descriptions/antenne-active-1090mhz](https://sites.google.com/site/vincentf1opa/descriptions/antenne-active-1090mhz) The 2 stage amp is probably the best compromise. A bit of gain first to overcome the filter losses then a bit more gain to drive it down the lossy coax. ---
**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:** [August 27, 2019, 3:09pm UTC](https://discussions.flightaware.com/t/its-failed-again/54231/19 "2019-08-27T15:09:14Z")
Under $9 for 2 of them: ![20190827_110522](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/e/e/ee300f26db8e7e7a1521e16a4edbe4fd80457d12.jpeg) ---
**Author:** ![hs0zed](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/hs0zed/32/93702_2.png) [@hs0zed](https://discussions.flightaware.com/u/hs0zed)\ **Post date:** [August 27, 2019, 5:10pm UTC](https://discussions.flightaware.com/t/its-failed-again/54231/20 "2019-08-27T17:10:54Z")
These are the GaaS pHemt’s? I like the look of this French integrated antenna. The PSA4-5043+ looks like a winner too, also a pHemt device I think, 0.9dB noise figure around 1GHz and about 18dB gain per device less about 3dB for the filter and maybe another 3dB for the coax to the sdr. [Next page](https://discussions.flightaware.com/t/its-failed-again/54231.md?page=2)