Hi,
You should know that the fw is being rewritten ( branch mci-rewrite ),
to use the MCI interface for data transfer, allowing up to 4 MHz
transfer.
But this will require a HW mod to be detailled later.
Cheers,
Sylvain
As a new user of GNU radio with a couple RTL2832 dongles to play with I
used the build-gnuradio script to install on Fedora 16 and Ubuntu
12.04. The Fedora install worked fine; but the Ubuntu one produced this:
lemur4[18]$ rtl_test
Found 1 device(s):
0: ezcap USB 2.0 DVB-T/DAB/FM dongle
Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
Found Elonics E4000 tuner
Supported gain values (14): -1.0 1.5 4.0 6.5 9.0 11.5 14.0 16.5 19.0
21.5 24.0 29.0 34.0 42.0
Reading samples in async mode...
cb transfer status: 1, canceling...
Library error 0, exiting...
Segmentation fault (core dumped)
The traceback showed the fault to occur in libusb1, and seemed similar
to the issue discussed at
http://lists.gnumonks.org/pipermail/osmocom-sdr/2012-August/000201.html
I noticed this patch at the head of master touched the same general part
of the code.
commit 3cbf1392612a0c6f02ec178f8e78568138f12b0a
Author: Hoernchen <la(a)tfc-server.de>
Date: Wed Jan 16 20:03:00 2013 +0100
exit if our usb device disappears
Reverting this change fixed the issue.
Peter
Hi,
In reading the directions for rtl-sdr installation, I'm curious if following line in the Software section (http://sdr.osmocom.org/trac/wiki/rtl-sdr#Softwarer):
"Please note: prior pulling a new version from git and compiling it,
please do a "make uninstall" first to properly remove the previous
version"
means to uninstall my gnuradio installation, or if I have one, just the rtl-sdr software?
I don't have any rtl-sdr software installed yet, but I do have a recent gnuradio installed (v3.6.?) on Ubuntu 12.10. Thanks for your help.
'73' Mike, KB1QVO
Sir:
If you look in the place where you built gr-osmosdr, you will find a
file called install_manifest.txt which contains where it put all the
files. The rtlsdr_source_c.xml and osmosdr_source_c.xml (which are
files that describe the sources, both of which produce streams of
complex numbers, which is what the naming convention means) are how the
gnuradio companion knows how to use those sources.
Do a "sudo make uninstall" where you built gr-osmosdr, and then start
over with gr-osmosdr. But this time, instead of just running "cmake"
with no options, use the command:
cmake .. -DCMAKE_INSTALL_PREFIX=/usr
You "define" (that's what "-D" means) the value "CMAKE_INSTALL_PREFIX"
to be /usr. If you don't define it to be something, it will use the
default value of "/usr/local"
I have a Web page with partial instructions (it's not intended to be a
Linux introduction, although I will do my best to answer specific
questions if you have any) and some other stuff on it:
http://www.ka8kpn.org/sdr-dongle.html
Oh, and while I'm thinking about it, I really detest mailing lists whose
default action on a reply is to write directly to the person to whom you
are responding rather than to the list. To me, it is optimizing the
atypical case and it makes far more sense to optimize for what everyone
nearly always wants to do. That is, it may be technically correct, but
it is definitely the wrong thing to do. However, I know I've lost that
battle, so I'll not mention it again.
On 01/12/2013 03:24 PM, tokens(a)myranch.com wrote:
> Hi Jonathan,
>
> Please excuse my ignorant comments and questions but I am very much a
> Linux novice.
>
> I see that there are directories for gr-osmosdr, rtl-sdr, and uhd
> under home directory. Under usr/local/share/gnuradio/grc/blocks/ I
> find osmosdr_source_c.xml and rtlsdr_source_c.xml. Directories for
> gnuradio are under usr/etc and usr/include. I guess this is what you
> mean by some bits of gr-osmosdr and rtlsdr end up in usr/local. How do
> I force cmake to install the software into /usr.
>
> Thank you very much.
>
> Regards,
> Al
>
> -----Original Message----- From: Jonathan Guthrie
> Sent: Saturday, January 12, 2013 2:18 PM
> To: tokens(a)myranch.com
> Subject: Re: rtl-sdr and gr-osmosdr
>
> On 01/12/2013 09:03 AM, tokens(a)myranch.com wrote:
>> I have installed these using the procedures shown in the wiki. I
>> didn’t see any errors during the installation. The packages are on
>> the computer but they are not listed amongst the sources on GNU Radio
>> Companion.
>> If I type in the terminal rtl_test –t I get:
>> Found 1 device(s):
>> 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
>>
>> Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
>> usb_open error -3
>> Failed to open rtlsdr device #0
>>
>> Any suggestions?
>>
>
> I installed GNURadio as packaged by my distribution, and I did the
> "cmake; make; sudo make install" that I found, and I got the symptoms
> you described. The problem I had is that packaged software normally
> gets installed into /usr and the "cmake, etc" procedure installs it's
> software into /usr/local. That meant that grc was looking in the wrong
> place to find the gr-osmosdr bits.
>
> Telling cmake to install the software into /usr fixed my problem. Could
> it possibly fix yours?
>
>
Using Sudo, as suggested by two readers, takes care of the rtl_test problem.
However, I still don’t have the OsmoSDR and RTLSDR source blocks appearing in GNU Radio Companion.
Thank you.
Al
I like adsbScope under Windows, but is there anything similar for unix? Hopefully something free that takes a tcp feed.
Alan
-----
Radio Astronomy - the ultimate DX
Greetings,
I noticed today that rtl_source_c::get_freq_range() returns an empty
range for all but E4000 tuners. Is it due to lack of information? I
have dongles with R820T and FCI2580 tuners that I can measure the
usable ranges for if needed.
Alex
Is this from Windows or something? In unix it's sleep, not Sleep, and it only takes ints or something similar.
I have a native (OpenBSD) usleep so I ifdefed:
#ifdef _WIN32
#define usleep(x) Sleep(x/1000)
#endif
It didn't affect my problem but it made me feel better.
Alan
-----
Radio Astronomy - the ultimate DX
With rtl_fm, I get a tiny burst of audio about once a minute.
My dongle is a vendor ID 0x0bda, product ID0x2838 from http://www.amazon.com/gp/browse.html?ie=UTF8&marketplaceID=ATVPDKIKX0DER&me…
I did:
rtl_fm -f 88500000 - | play -t raw -r 24k -e signed-integer -b 16 -c 1 -V1 -
I got:
Found 1 device(s):
0: Realtek, RTL2838UHIDIR, SN: 00000013
Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
Found Rafael Micro R820T tuner
-: (raw)
Encoding: Signed PCM
Channels: 1 @ 16-bit
Samplerate: 24000Hz
Replaygain: off
Duration: unknown
In:0.00% 00:00:00.00 [00:00:00.00] Out:0 [ | ] Clip:0
Oversampling input by: 42x.
Oversampling output by: 1x.
Buffer size: 8.13ms
Tuned to 88752000 Hz.
Sampling at 1008000 Hz.
Output at 24000 Hz.
Exact sample rate is: 1008000.009613 Hz
Tuner gain set to automatic.
In:0.00% 00:00:00.68 [00:00:00.00] Out:16.4k [ =====|===== ] Clip:0
^CSignal caught, exiting!
The dongle works if I boot into Windows, but in OpenBSD I can't get anything out of it. I'm still trying to get dependencies for Gnuradio together. The only odd thing is that being OpenBSD, there's no -lrt when I link. Those functions are built into something else so I compile without the -lrt. There isn't an -lrt library.
I've tried writing little scripts to run it so I do it consistently. My wide FM one:
#!/bin/sh
rtl_fm -W -l 0 -f 88500000 - | play -t raw -r 32000 -e signed-integer -b 16 -c 1 -V4 -
Narrow:
#!/bin/sh
rtl_fm -N -l 0 -f 162550000 - | play -t raw -r 32k -e signed-integer -b 16 -c 1 -V4 -
I've played with various options. If I use -R it runs for a long time with lots of data by Sox's meter, but I don't hear anything. If I pipe it to a file (without -R) the file is very small and grows slowly, not what I would expect from audio. I just grabbed a fresh copy by git yesterday but it works about the same.
A fresh run:
freebie# rtl_fm -N -f 162550000 - | play -t raw -r 32k -e signed-integer -b 16 -c 1 -V 4 -
Found 1 device(s):
play: SoX v14.3.2
0: Realtek, RTL2838UHIDIR, SN: 00000013
Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
Found Rafael Micro R820T tuner
Oversampling input by: 42x.
Oversampling output by: 1x.
Buffer size: 8.13ms
Tuned to 162802000 Hz.
Sampling at 1008000 Hz.
Output at 24000 Hz.
Exact sample rate is: 1008000.009613 Hz
Tuner gain set to automatic.
Signal caught, exiting!
I don't have much idea what's going on, but I'm tempted to try opening it from a pipe (in C) to see if I can capture anything more.
Alan
-----
Radio Astronomy - the ultimate DX
Happy New Year to Everyone ....
I am thinking this may be more of an issue with rtl_tcp than with the
client software (SDR#) so I thought I would throw this out there and see
if anyone has any ideas.
I have a Ham-it-Up up converter connected to an EZcap 668 (e4000) dongle
and am using a random length long wire antenna all connected on a remote
linux server (with minimal OS install) where I am running rtl_tcp. I am
starting rtl_tcp using the following command: rtl_tcp -a
192.168.110.220 -p 1236 -d 2
When I connect to the remote dongle/converter using SDRSharp with
RTL-USB/TCP I get nothing but static / noise. If I put the converter in
bypass mode, then SDRSharp and my dongle perform with the typical
performance I have experienced in the past.
If I move the same dongle and up converter combo to the same pc running
SDRSharp and connect to the dongle using RTL-SDR/USB I am able to
receive many HF signals, as one would expect. For example, CHU Canada,
WWV, some local CB radio chatter and even our local airport's LF beacon
at 329 KHZ.
I also tried starting rtl_tcp with the -g option and setting a gain to
try to match the gain options available under RTL-SDR/USB but that had
no effect.
I am just wondering if I am not finding the correct settings so this
will work or if this is an issue with rtl_tcp?
BTW:
I actually have two other Ezcap 668's running simultaneously on the
remote linux server as device 0 / port 1234 and device 1 / port 1235
working just fine when connected to other remote instances of SDR Sharp.
73's - Dave
KD9GN
