James,

Can you also post your test.tsv file and elaborate on the specific P25 system that you desire to monitor?    I have not had any issues with the RTL SDR on OP25 scope.py running under Ubuntu 14.04 using the following command outline to build my system.   Let me know if you are running Ubuntu in VirtualBox on a Windows machine as there are a couple of additional pointers that I can pass along.

Download and install Ubuntu 14.04 Latest: http://releases.ubuntu.com/14.04/

sudo apt-get update
sudo apt-get build-dep gnuradio
sudo apt-get install gnuradio gnuradio-dev gr-osmosdr librtlsdr-dev libuhd-dev libhackrf-dev libitpp-dev libpcap-dev git

cd ~
git clone git://op25.osmocom.org/op25.git
cd op25
mkdir build
cd build
cmake ../
make
sudo make install
sudo ldconfig

sudo nano /etc/modprobe.d/dvb-blacklist.conf
blacklist r820t
;blacklist rtl2832
blacklist rtl2830
blacklist dvb_usb_rtl28xxu

# ctrl+x to save and exit

sudo cp /etc/pulse/client.conf /etc/pulse/client.confbackup
sudo nano /etc/pulse/client.conf
Edit the following line: From: ; autospawn = yes To: autospawn = no

Restart!

Create trunk.tsv
Create trunkgroup.tsv

Create scope.sh

cd /home/username/op25/op25/gr-op25_repeater/apps

./scope.py --args rtl=0 -N LNA:46 -f 853.9125e6 -S 2560000-q 0

-V -T trunk.tsv

chmod +x scope.sh

Bill, WA8WG

 (most recent call last):

  File "./scope.py", line 55, in <module>

    import op25_repeater

  File "/usr/local/lib/python2.7/dist-packages/op25_repeater/__init__.py",

line 45, in <module>

    from op25_repeater_swig import *

  File

"/usr/local/lib/python2.7/dist-packages/op25_repeater/op25_repeater_swig.py",

line 28, in <module>

    _op25_repeater_swig = swig_import_helper()

  File

"/usr/local/lib/python2.7/dist-packages/op25_repeater/op25_repeater_swig.py",

line 24, in swig_import_helper

    _mod = imp.load_module('_op25_repeater_swig', fp, pathname, description)

ImportError: /usr/local/lib/libgnuradio-op25_repeater.so: undefined

symbol: _ZN8p25p2_vf12encode_dstarEPhPKi

Searching around for this does not turn up anything really. Has anyone seen this before?

Thanks,

James