30 Jul
2011
30 Jul
'11
6:16 a.m.
After difficulty buying the funcubedongle i think i have found a
possible alternative piece of hardware.
Maybe even works better than FCD given a lot of people is reporting
that the dongle is sensitive to overloadis sensitive to overload.
It's a traditional radio-scanner receiver that provide a built in I/Q
output for use with SDR software.
http://www.thiecom.de/alinco-dj-x11.html
http://www.hamradioscience.com/2011/06/alinco-dj-x11t-review/
Given I/Q connected to sound card, ¿would this work directly with fcdp-tetra_demod.py?
--
<>
30 Jul
30 Jul
9:56 p.m.
Hi!
On Sat, Jul 30, 2011 at 02:16:02AM +0200, Mccauley wrote:
Maybe even works better than FCD given a lot of people
is reporting
that the dongle is sensitive to overloadis sensitive to overload.
It's a traditional radio-scanner receiver that provide a built in I/Q
output for use with SDR software.
http://www.thiecom.de/alinco-dj-x11.html
http://www.hamradioscience.com/2011/06/alinco-dj-x11t-review/
Given I/Q connected to sound card, ¿would this work directly with
fcdp-tetra_demod.py?
I couldn't find any mention of the channel bandwidth for the I/Q mode of
that scanner. If it's at least the bandwidth of the tetra signal
(25kHz), and if it doesn't have too much phase noise, it should work.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
14 Aug
14 Aug
7:04 p.m.
Hi all,
I own one of these. The I/Q bandwidth is 48kHz. But for now I can't get it to work
with the script. Should it be possible to use the same script as the FCD but with -r 48000
specified? Because then I get an error like this:
Traceback (most recent call last):
File "./src/demod/python/fcdp-tetra_demod.py", line 83, in <module>
tb = my_top_block(options)
File "./src/demod/python/fcdp-tetra_demod.py", line 36, in __init__
channel_taps = gr.firdes.low_pass(1.0, sample_rate, options.low_pass, options.low_pass
* 0.1, gr.firdes.WIN_HANN)
File
"/usr/lib/python2.7/dist-packages/gnuradio/gr/gnuradio_swig_py_general.py", line
2715, in low_pass
return _gnuradio_swig_py_general.firdes_low_pass(*args, **kwargs)
IndexError: gr_firdes check failed: 0 < fa <= sampling_freq / 2
Am I doing something wrong?
Besides this the Alinco is a great scanner!
Cheers,
Pepijn
Op 30 jul 2011, om 17:56 heeft Harald Welte het volgende geschreven:
Hi!
On Sat, Jul 30, 2011 at 02:16:02AM +0200, Mccauley wrote:
Maybe even works better than FCD given a lot of
people is reporting
that the dongle is sensitive to overloadis sensitive to overload.
It's a traditional radio-scanner receiver that provide a built in I/Q
output for use with SDR software.
http://www.thiecom.de/alinco-dj-x11.html
http://www.hamradioscience.com/2011/06/alinco-dj-x11t-review/
Given I/Q connected to sound card, ¿would this work directly with
fcdp-tetra_demod.py?
I couldn't find any mention of the channel bandwidth for the I/Q mode of
that scanner. If it's at least the bandwidth of the tetra signal
(25kHz), and if it doesn't have too much phase noise, it should work.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
5063
days inactive
5078
days old
2 comments
3 participants
participants (3)
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Harald Welte -
Mccauley -
Pepijn van den Berkhof