Versions 0.5.3 (final) & 0.6.0 Alpha 5 Released

[sdrtrunk]

These two releases resolve multiple issues with application lockup, tuner freezes, buffer overflows and excessive memory usage:

Version 0.5.3 https://github.com/DSheirer/sdrtrunk/releases/tag/v0.5.3

Version 0.6.0 Alpha 5 https://github.com/DSheirer/sdrtrunk/releases/tag/v0.6.0-alpha.5

v/r,

Denny

[Nathan Deppe]

I am running a system with 3 SDRplay devices on 0.6.0 Alpha 5 I am having issue with the control channel dropping out. 

On startup the tuners tune and begin to decode 3 control channels, and traffic for other channels is show and displayed as expected. After some time the control channel will drop out on two of the 3 control channels that are using a single interface on 800mhz. When the issue occurs the Channel Peak is reading -50, power is reading -70. AGC is disabled, and the Gain slider has been adjusted to mid range, no Gain Overload is indicated. See attached video

System runs for a while but eventually freezes, no errors displayed in the terminal window. CPU seems to be getting overloaded, as CPU begins to ramp up.

Ubuntu 22.04 LTS

i5-10500T @ 2.0GHz

16GB RAM

[Nathan Deppe]

Here is a comparision with 0.6.0 Alpha 4. This version seems to work better; however, crashes after several hours.

[charley....@gmail.com]

Installed Alpha 5 on a mid-tier PC using an Airspy Mini to cover the system bandwidth.  The monitored system is P25 Phase 2 Moto currently under deployment testing.  Today they ae testing talk group patching.  I'm noticing that the patch labels are persistent in the "Now Playing" window  (P:08616 [08617]) meaning that when the Call is released, the patch label     does not disappear.

[charley....@gmail.com]

I'm also noting the same behavior in a busier Phase 2 system, where the tg label is persistent in the "now playing' tgid window after the tg has been released.  It sticks until a new transmission is played.  It seems to happen only with patched (together) talk groups.

[Eric F.]

I don't actively monitor any patched talkgroups so I can't say I've seen that behavior. I have however in the past noticed that same behavior from time to time but did not pay attention as to whether or not it was a patched group.
Running 0.5.3 since it was published, the issue I had with the program freezing up seems to be corrected. (0.5.0 didn't do that.) However, I too have had the control channel drop and refuse then to 'stick' again, while active calls continue, but after a few minutes it'll come back. Occasionally something would populated the alias column of the control channel. Now it seems when that happens and it's a group I ignore it will drop the control channel. I haven't had this happen enough to be certain. It does use a lot of memory, 470 MB at startup but over 1G more after a short while.

[Brian Hall]

With 0.6.0 Alpha 5, after a while, it stops receiving the control channel, and sdrtrunk displays this error repeatedly forever:

2023-04-23 09:49:41.475 INFO  i.g.d.s.t.m.TunerManager - Unable to source channel [854912500] from preferred tuner [Airspy B58069DC-39632E14] - searching for another tuner  [1GB/1GB 66%]

[charley....@gmail.com]

Can you post your tuner configuration page?

Alpha 5 does not play well with my RSP1a.  It will start throwing errors and crash shortly after startup, but if I use an Airspy Mini, Alpha 5 runs normally.

[Brian Hall]

See attached for my tuner config page in sdrtrunk. Using Airspy R2 (RTL-SDR is being used for another application and is disabled in sdrtrunk).

[Brian Hall]

And here's another shot of my tuner config after playing around with the levels.

[jim...@gmail.com]

I have a basic All-In_one Acer desktop with an i5, 12g mem, running Windows 11 pro. I was one of the ones who had to switch  my Source from Polyphase to Heterodyne or my waterfall would breakup and all decoding stopped. With 060 Alpha 5 all works great. Back on Polyphase and no issues. I listen to one P25 system that is county wide.  All county departments, Sheriff Office, 7 city police departments. Everything works great.

[charley....@gmail.com]

Since your only available tuner is covering the 700 band, you will not be able to receive a frequency in the 800 band with the same tuner.

On Monday, April 24, 2023 at 5:49:13 PM UTC-4 bhal...@gmail.com wrote:

[Brian Hall]

Understood. Yes, the system I'm attempting to monitor is in the 700 MHz range. I occasionally monitor other systems in the 800 range, but never both simultaneously.

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[A Vel]

I was wondering when Alpha 6 or 7 will be released? Can't wait to see how Airspy HF+ performs on sdrtrunk