SDRtrunk and Pi 4 (4GB(

[Ronnierozier2]

just wanted to report here i managed to get SDRtrunk installed on a raspberry pi 4 with 4gb of ram. the standard pi 4 processor is about 1.5Ghz and I overclocked this booger to 2.3Ghz. I was able to get the software to run and lock onto a control channel but the Pi 4 just didnt have enough horsepower to properly decode traffic. im no pi professional and could be doing something wrong but it didnt work so well for me. I even added an ice tower to keep it cool. picture below.

 

[lwvmobile]

Try OP25, it works great on a raspberry pi, I can only imagine how well it'll work on one with RGB enhancements.

 

[Ronnierozier2]

Try OP25, it works great on a raspberry pi, I can only imagine how well it'll work on one with RGB enhancements.

I’ll give OP25 a try.

Yeah the RGB gives my Rpi turbo mode 😆

 

[lwvmobile]

Probably would be a good idea to turn the clock back down to stock speed though. Even with that cooler, I can't imagine it's going to run stable, or be able to power itself and the USB devices properly at that clock.

 

[Ronnierozier2]

Probably would be a good idea to turn the clock back down to stock speed though. Even with that cooler, I can't imagine it's going to run stable, or be able to power itself and the USB devices properly at that clock.

I’ll turn it back down to stock and give that a try

 

[lwvmobile]

What's htop or whichever task manager reporting the CPU usage as when SDRtrunk is running with the CC active on it. Is it pegged at 100% or nearly 100%? If so, then definitely try out OP25, it can run with a lot less horsepower, but it does have a bit of a learning curve to get set up properly. Other considerations include which type of system you are trying to decode will determine if you need to specify additional frequencies mapped in as channels, and also signal stregnth. If signal is bad, then that could cause your issues with no traffic channel decoding. Its a lot easier to get locks on a control channel and get some partial decoding, than it is to stay on a traffic channel and get clean voice decoding.

 

[Ronnierozier2]

What's htop or whichever task manager reporting the CPU usage as when SDRtrunk is running with the CC active on it. Is it pegged at 100% or nearly 100%? If so, then definitely try out OP25, it can run with a lot less horsepower, but it does have a bit of a learning curve to get set up properly. Other considerations include which type of system you are trying to decode will determine if you need to specify additional frequencies mapped in as channels, and also signal stregnth. If signal is bad, then that could cause your issues with no traffic channel decoding. Its a lot easier to get locks on a control channel and get some partial decoding, than it is to stay on a traffic channel and get clean voice decoding.

quiet often the CPU is topping out at 100%. i can lock onto the control channel just fine but the messages are scrolling by very slowly like the system cant keep up. i can see calls but no audio. guess it's just running out of horse power. thats my guess.

 

[maus92]

I hope that's not the rig that you have been using when you posted on other threads about not receiving anything using SDRT. That would be the reason.

 

[Ronnierozier2]

I hope that's not the rig that you have been using when you posted on other threads about not receiving anything using SDRT. That would be the reason.

It’s not, I was using a 64 bit pc and it’s working now perfectly. I was just trying to see if a pi had enough horsepower

 

[moustache]

I am running the same PI 4 with DragonOS Pi64 with sdrtrunk and it runs just fine. However I turned the channels number down to 2, and am using the heterodyne channelizer, it runs and decodes just fine.

 

[Ronnierozier2]

I am running the same PI 4 with DragonOS Pi64 with sdrtrunk and it runs just fine. However I turned the channels number down to 2, and am using the heterodyne channelizer, it runs and decodes just fine.

I’m going to give that a try and see how it performs. Thanks!

 

[AngWay]

I am running the same PI 4 with DragonOS Pi64 with sdrtrunk and it runs just fine. However I turned the channels number down to 2, and am using the heterodyne channelizer, it runs and decodes just fine.

Did u overclock the pi or is it factory?

 

[moustache]

Stock

 

[DC31]

Hmmm. I run SDRTrunk on an Inovato (inovato.com) fairly successfully with no usb hub or auxiliary cooling. That device is reported to be approximately equal to a pi3. It decodes a relatively quiet P25 system with maybe 3-4 recorders. You can hear it at OpenMHz

it was crashing occasionally but I learned that a poor usb connection could be to blame. Installed a usb extension cable rather than plugging the rt–sdr directly into the unit and that helped a lot. It requires considerably less CPU if you disable the waterfall (under the view menu).

 

[DC31]

oh yeah, I also run OP25 on a pi4 and it handles that quite well.