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<p>On 14 Mar 2017 19:19:37 +0000<br>
"ikj1234i@yahoo.com [op25-dev]" <op25-dev@yahoogroups.com> wrote:<br>
<br>
> the message "osmosdr source_c creation failure" suggests the SDR<br>
> device isn't being seen by scope.py.<br>
> <br>
> To rule out hardware and/or driver and/or permission issues let's<br>
> have you first run the osmocom_fft app to test and verify basic SDR<br>
> connectivity...<br>
> <br>
> also scope.py wants a frequency (even a dummy frequency) such as<br>
> scope.py -f 858.7e6. I highly recommend adding a sampling rate (-S)<br>
> and offset (-o) as well as a correction for PPM drift (-q). This<br>
> should be enough to get tuned to the trunk CC as a first step...<br>
> <br>
> Max<br>
<br>
I'm using my flightaware dongle. The MCX fell out of my DVB-T. :-(<br>
<br>
Here is the FFT:<br>
osmocom_fft -f 88.5e6 -s 2e6<br>
linux; GNU C++ version 4.8.5; Boost_105400; UHD_003.009.005-0-unknown<br>
<br>
Works fine.<br>
<br>
gr-osmosdr 772fb153 (0.1.1git) gnuradio v3.7.10.1-237-g81e7af7b<br>
built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf <br>
Using device #0 Realtek RTL2832UFA SN: 00001000<br>
Found Rafael Micro R820T tuner<br>
[R82XX] PLL not locked!<br>
Exact sample rate is: 2000000.052982 Hz<br>
[R82XX] PLL not locked!<br>
<br>
----------------------------------------------------<br>
<br>
/usr/local/src/op25/op25/gr-op25_repeater/apps> ./scope.py -f<br>
772.54375e6 linux; GNU C++ version 4.8.5; Boost_105400;<br>
UHD_003.009.005-0-unknown<br>
<br>
gr-osmosdr 772fb153 (0.1.1git) gnuradio v3.7.10.1-237-g81e7af7b<br>
built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf <br>
Using device #0 Realtek RTL2832UFA SN: 00001000<br>
Found Rafael Micro R820T tuner<br>
[R82XX] PLL not locked!<br>
gain: name: LNA range: start 0 stop 0 step 0<br>
supported sample rates 250000-2400000 step 24000<br>
Traceback (most recent call last):<br>
File "./scope.py", line 2751, in <module><br>
app = stdgui2.stdapp(p25_rx_block, "APCO P25 Receiver", 3)<br>
File<br>
"/usr/local/lib64/python2.7/site-packages/gnuradio/wxgui/stdgui2.py",<br>
line 46, in __init__ wx.App.__init__ (self, redirect=False) File<br>
"/usr/lib64/python2.7/site-packages/wx-3.0-gtk2/wx/_core.py", line<br>
8628, in __init__ self._BootstrapApp() File<br>
"/usr/lib64/python2.7/site-packages/wx-3.0-gtk2/wx/_core.py", line<br>
8196, in _BootstrapApp return _core_.PyApp__BootstrapApp(*args,<br>
**kwargs) File<br>
"/usr/local/lib64/python2.7/site-packages/gnuradio/wxgui/stdgui2.py",<br>
line 49, in OnInit frame = stdframe (self.top_block_maker, self.title,<br>
self._nstatus) File<br>
"/usr/local/lib64/python2.7/site-packages/gnuradio/wxgui/stdgui2.py",<br>
line 76, in __init__ self.panel = stdpanel (self, self,<br>
top_block_maker) File<br>
"/usr/local/lib64/python2.7/site-packages/gnuradio/wxgui/stdgui2.py",<br>
line 98, in __init__ self.top_block = top_block_maker (frame, self,<br>
vbox, sys.argv) File "./scope.py", line 212, in __init__<br>
self.__init_gui(frame, panel, vbox) File "./scope.py", line 544, in<br>
__init_gui self.data_scope = datascope_sink_f(self.notebook,<br>
samples_per_symbol = 10, num_plots = 100) File "./scope.py", line 1467,<br>
in __init__ self.st = blocks.message_sink(gr.sizeof_float, msgq, 1)<br>
File<br>
"/usr/local/lib64/python2.7/site-packages/gnuradio/blocks/blocks_swig0.py",<br>
line 1547, in make return _blocks_swig0.message_sink_make(*args)<br>
NotImplementedError: Wrong number or type of arguments for overloaded<br>
function 'message_sink_make'. Possible C/C++ prototypes are:<br>
gr::blocks::message_sink::make(size_t,gr::msg_queue::sptr,bool)<br>
gr::blocks::message_sink::make(size_t,gr::msg_queue::sptr,bool,std::string<br>
const &)<br>
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