I've tried pager_rx.py on bladeRF, and it works fine
here (GnuRadio 3.7.2.1 and Ubuntu 13.04). Tons of
traffic on channel 25 here in Silicon Valley.
I've made some changes to the code to work better
with bladeRF (mostly with the gain setting).
http://www.w6rz.net/pager_rx.py
When a flow grays out and you have to force a
quit, it usually means you don't have enough CPU cycles.
However, at 1.2 Msps, pager_rx.py isn't really taking
much CPU. Perhaps it's your VM?
Ron
On 2/13/2014 3:31 PM, Al Smith wrote:
I am new to gnuradio and have spent the last few days reading every
tutorial I can find. I have set up both 3.7.1 and 3.6.5 in separate
test environments in 2 VMs. I am using a BladeRF SDR with dual 900MHz
antenna.
I've been asked to test 2 devices which will controlled remotely over
the FLEX paging network. I can see some blocks have been built into
gnuradio-companion, FLEX Deinterleave and FLEX Synchronizer. I also
found some samples here https://github.com/argilo/sdr-examples but I
think these were built for a different version of gnuradio possibly.
When I run the python script pager_rx.py or pager_rx_929.py it pops
up with a nice waterfall display and I even get some text decoded
signals in the terminal window, but within a few seconds the display
goes gray and I cannot change any of the sliders and must force quit
to get out. I loaded the multi_tx.grc in gnuradio-companion just to
get an idea of how to build a flow chart for FLEX, but I get some
errors about missing blocks.
Loading: "/home/test/sandbox/gnuradio-builds/sdr-examples/multi_tx.grc"
>>> Error: Block key "iqbalance_fix_cc" not found in Platform -
grc(GNU Radio Companion)
>>> Error: Connection between blocks_add_xx_0(0) and
iqbalance_fix_cc_0(0) could not be made.
sink block id "iqbalance_fix_cc_0" not in block ids
>>> Error: Connection between iqbalance_fix_cc_0(0) and
blocks_add_const_vxx_1(0) could not be made.
source block id "iqbalance_fix_cc_0" not in block ids
>>> Done
If I'm going to build my own flowcharts, I'll need to know what the
blocks in the existing flows are doing, but I haven't seen any good
resources for that. If I can get some of the existing scripts to run
properly that might help as well. Any suggestions on that? Here is
the output when I run the pager_rx.py
gr-osmosdr v0.1.0-66-g154c4ddd (0.1.1git) gnuradio 3.7.1
built-in source types: file fcd rtl_tcp bladerf rfspace
[bladeRF source] Using nuand LLC bladeRF #0 SN 909d...c10c FW v1.6.1
FPGA v0.0.2
According to the readme this script is meant to be used with an
RTL-SDR rather than my BladeRF but it seems to detect the blade and I
don't see any hardware specific modules being imported. Am I missing
something?
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