SmartNet transmissions cut off at the beginning

[patrickfish]

I pulled the latest master branch tonight and restarted trunk-recorder and noticed almost all of my recordings were cut off by 2-5 sec. I reverted back to a975e01d662152e379a0e142624566053a6288dd (commit prior to https://github.com/robotastic/trunk-recorder/commit/d6613b940415c767bb58d4a18f118396c180be6d) and everything was back to normal. Has anyone else experienced this on SmartNet?

[robotastic]

Hmm… is that just for SmartNet or P25 too? It was probably that change to P25 Recorder, with the low-pass filter change. I will try out some different settings.

On Feb 19, 2017, at 1:17 AM, patrickfish notifications@github.com wrote:

I pulled the latest master branch tonight and restarted trunk-recorder and noticed almost all of my recordings were cut off by 2-5 sec. I reverted back to a975e01 https://github.com/robotastic/trunk-recorder/commit/a975e01d662152e379a0e142624566053a6288dd (commit prior to d6613b9 https://github.com/robotastic/trunk-recorder/commit/d6613b940415c767bb58d4a18f118396c180be6d) and everything was back to normal. Has anyone else experienced this on SmartNet?

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[robotastic]

What sampling rate are you using from the source? Is it RTL-SDR dongles, or something beefier, like a HackRF? The number of filter taps is related to delay, and with a higher sampling rate, I think there would be more taps. Can you look for the "Number of LPF taps: “ print out when you first start up?

On Feb 19, 2017, at 1:17 AM, patrickfish notifications@github.com wrote:

I pulled the latest master branch tonight and restarted trunk-recorder and noticed almost all of my recordings were cut off by 2-5 sec. I reverted back to a975e01 https://github.com/robotastic/trunk-recorder/commit/a975e01d662152e379a0e142624566053a6288dd (commit prior to d6613b9 https://github.com/robotastic/trunk-recorder/commit/d6613b940415c767bb58d4a18f118396c180be6d) and everything was back to normal. Has anyone else experienced this on SmartNet?

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/robotastic/trunk-recorder/issues/98, or mute the thread https://github.com/notifications/unsubscribe-auth/AAG53HZ-RfqnIMXYyyFcTXX0KkyBWePnks5rd95ogaJpZM4MFX3F.

[patrickfish]

Using a HackRF with a sampling rate of 8000000.0 Number of LPF taps: 24243

I don't have any P25 systems to test with, only SmartNet with P25 voice.

[robotastic]

Ah! Ok - I will test with my HackRF. I think it is from the low pass filter and the higher sample rate. My filters are too tight which adds delay.

Sent from my iPhone

On Feb 19, 2017, at 1:23 PM, patrickfish notifications@github.com wrote:

Using a HackRF with a sampling rate of 8000000.0 Number of LPF taps: 24243

I don't have any P25 systems to test with, only SmartNet with P25 voice.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.

[robotastic]

Can you give the lpf_test branch a try? It seemed to work well with my hackrf

[patrickfish]

Seems like something is off with the channel calculations...here's the full run output.

$ linux; GNU C++ version 5.3.1 20151219; Boost_105800; UHD_003.009.002-0-unknown

[2017-02-20 23:11:45.616100] [0x00007fe7cc39a900] [info]    System Type: smartnet
[2017-02-20 23:11:45.616142] [0x00007fe7cc39a900] [info]    Control Channels:
[2017-02-20 23:11:45.616190] [0x00007fe7cc39a900] [info]    8.53638e+08
[2017-02-20 23:11:45.616204] [0x00007fe7cc39a900] [info]
[2017-02-20 23:11:45.616212] [0x00007fe7cc39a900] [info]    API Key: 75559ce06bee6b7eb727e2df776463bb996b6472a3755cf0eb0e4192c06656c2
[2017-02-20 23:11:45.616222] [0x00007fe7cc39a900] [info]    Short Name: Davis
[2017-02-20 23:11:45.616229] [0x00007fe7cc39a900] [info]    Upload Script:
[2017-02-20 23:11:45.616238] [0x00007fe7cc39a900] [info]    Talkgroups File: bc3b.csv
[2017-02-20 23:11:45.616262] [0x00007fe7cc39a900] [info]    Capture Directory: /home/pfish/trunk-recorder
[2017-02-20 23:11:45.616271] [0x00007fe7cc39a900] [info]    Config Directory: /home/pfish/trunk-recorder
[2017-02-20 23:11:45.616279] [0x00007fe7cc39a900] [info]    Upload Server: https://api.openmhz.com
[2017-02-20 23:11:45.616286] [0x00007fe7cc39a900] [info]    Default Mode: digital
[2017-02-20 23:11:45.616292] [0x00007fe7cc39a900] [info]    Call Timeout (seconds): 3
[2017-02-20 23:11:45.616333] [0x00007fe7cc39a900] [info]    Center: 8.545e+08
[2017-02-20 23:11:45.616348] [0x00007fe7cc39a900] [info]    Rate: 8e+06
[2017-02-20 23:11:45.616359] [0x00007fe7cc39a900] [info]    Error: 0
[2017-02-20 23:11:45.616372] [0x00007fe7cc39a900] [info]    PPM Error: -5
[2017-02-20 23:11:45.616384] [0x00007fe7cc39a900] [info]    Gain: 0
[2017-02-20 23:11:45.616397] [0x00007fe7cc39a900] [info]    IF Gain: 24
[2017-02-20 23:11:45.616409] [0x00007fe7cc39a900] [info]    BB Gain: 24
[2017-02-20 23:11:45.616418] [0x00007fe7cc39a900] [info]    LNA Gain: 0
[2017-02-20 23:11:45.616425] [0x00007fe7cc39a900] [info]    MIX Gain: 0
[2017-02-20 23:11:45.616436] [0x00007fe7cc39a900] [info]    Squelch: -60
[2017-02-20 23:11:45.616448] [0x00007fe7cc39a900] [info]    Idle Silence: false
[2017-02-20 23:11:45.616459] [0x00007fe7cc39a900] [info]    Digital Recorders: 2
[2017-02-20 23:11:45.616467] [0x00007fe7cc39a900] [info]    Debug Recorders: 0
[2017-02-20 23:11:45.616476] [0x00007fe7cc39a900] [info]    Analog Recorders: 4
[2017-02-20 23:11:45.616485] [0x00007fe7cc39a900] [info]    Driver: osmosdr
[2017-02-20 23:11:45.616496] [0x00007fe7cc39a900] [info]    Modulation: fsk4
[2017-02-20 23:11:45.616505] [0x00007fe7cc39a900] [info]    Source Device not specified
gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.9
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy redpitaya
Number of USB devices: 8
USB device 1d50:6089: 0000000000000000457863c8223e261f match
Using HackRF One with firmware 2015.07.2
[2017-02-20 23:11:46.318425] [0x00007fe7cc39a900] [info]    SOURCE TYPE OSMOSDR (osmosdr)
[2017-02-20 23:11:46.318447] [0x00007fe7cc39a900] [info]    Setting sample rate to: 8e+06
[2017-02-20 23:11:46.319648] [0x00007fe7cc39a900] [info]    Actual sample rate: 8e+06
[2017-02-20 23:11:46.319686] [0x00007fe7cc39a900] [info]    Tunning to 8.545e+08hz
[2017-02-20 23:11:46.320172] [0x00007fe7cc39a900] [info]    Gain Stage: RF supported values: 0 14
[2017-02-20 23:11:46.320230] [0x00007fe7cc39a900] [info]    Gain Stage: IF supported values: 0 8 16 24 32 40
[2017-02-20 23:11:46.320340] [0x00007fe7cc39a900] [info]    Gain Stage: BB supported values: 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62
[2017-02-20 23:11:46.320365] [0x00007fe7cc39a900] [info]    Max HZ: 8.585e+08
[2017-02-20 23:11:46.320382] [0x00007fe7cc39a900] [info]    Min HZ: 8.505e+08
[2017-02-20 23:11:46.320645] [0x00007fe7cc39a900] [info]    IF Gain set to: 24
[2017-02-20 23:11:46.320885] [0x00007fe7cc39a900] [info]    BB Gain set to: 24
[2017-02-20 23:11:46.320919] [0x00007fe7cc39a900] [info]    Gain set to: 0
Using Volk machine: sse4_2_64_orc
O[2017-02-20 23:11:46.584967] [0x00007fe7cc39a900] [info]    Resampled Rate: 96385.5 Decimation: 83 System Rate: 48000 ARB Rate: 0.498
[2017-02-20 23:11:46.585196] [0x00007fe7cc39a900] [info]    P25 Recorder Taps - initial: 873 channel: 175 ARB: 1461 Total: 2509
Project 25 IMBE Encoder/Decoder Fixed-Point implementation
Developed by Pavel Yazev E-mail: pyazev@gmail.com
Version 1.0 (c) Copyright 2009
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; see the file ``LICENSE'' for details.
[2017-02-20 23:11:46.595622] [0x00007fe7cc39a900] [info]    Resampled Rate: 96385.5 Decimation: 83 System Rate: 48000 ARB Rate: 0.498
[2017-02-20 23:11:46.595850] [0x00007fe7cc39a900] [info]    P25 Recorder Taps - initial: 873 channel: 175 ARB: 1461 Total: 2509
O[2017-02-20 23:11:46.605571] [0x00007fe7cc39a900] [info]    P25 Recorder Taps - initial: 873 channel: 131 ARB: 1461 Total: 2465
O[2017-02-20 23:11:46.613388] [0x00007fe7cc39a900] [info]    P25 Recorder Taps - initial: 873 channel: 131 ARB: 1461 Total: 2465
[2017-02-20 23:11:46.620002] [0x00007fe7cc39a900] [info]    P25 Recorder Taps - initial: 873 channel: 131 ARB: 1461 Total: 2465
[2017-02-20 23:11:46.626441] [0x00007fe7cc39a900] [info]    P25 Recorder Taps - initial: 873 channel: 131 ARB: 1461 Total: 2465
[2017-02-20 23:11:46.627226] [0x00007fe7cc39a900] [info]    Loading Talkgroups...

[2017-02-20 23:11:46.627410] [0x00007fe7cc39a900] [info]    Read 30 talkgroups.
[2017-02-20 23:11:46.627427] [0x00007fe7cc39a900] [info]    Control Channel: 8.53638e+08
[2017-02-20 23:11:46.627462] [0x00007fe7cc39a900] [info]    SmartNet Trunking - SysId: 0
[2017-02-20 23:11:46.627475] [0x00007fe7cc39a900] [info]    Control channel: 8.53638e+08
O[2017-02-20 23:11:46.633378] [0x00007fe7cc39a900] [info]    P25 Recorder Taps - initial: 873 channel: 175 ARB: 1947 Total: 2995
O[2017-02-20 23:14:15.994188] [0x00007fe7cc39a900] [info]       Recording not started because there was no source covering: 4.92638e+08 For TG: 44240

[robotastic]

Sorry about that - I had left the code I use for my local smartnet sys in. I just fixed it, the channels should be correct now.

[patrickfish]

So far so good...will keep this branch running for a bit and let you know if I have any issues.

[patrickfish]

Yup, looks like we're back to normal. Thanks for checking into this! I see it's been merged into master now.

[robotastic]

Wahoo!!!