RTL-SDR - Revision history

ChrisSmolinski: /* Building rtl-sdr on Mac OS X */

2015-11-27T18:09:22Z

Building rtl-sdr on Mac OS X

← Older revision		Revision as of 18:09, 27 November 2015
Line 37:		Line 37:

	== Building rtl-sdr on Mac OS X ==		== Building rtl-sdr on Mac OS X ==
		+	Update, I found that on Yosemite, you can just use MacPorts to built the rtl-sdr package:
		+
		+	sudo port install rtl-sdr
		+
	First I got the code from [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]		First I got the code from [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]

WikiSysop at 19:11, 17 January 2013

2013-01-17T19:11:40Z

← Older revision		Revision as of 19:11, 17 January 2013
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	*Dump 1090 Mode S decoder specifically designed for RTLSDR devices: [https://github.com/antirez/dump1090 https://github.com/antirez/dump1090]		*Dump 1090 Mode S decoder specifically designed for RTLSDR devices: [https://github.com/antirez/dump1090 https://github.com/antirez/dump1090]

		+	== Installing pre-built rtl-sdr on Mac OS X ==
		+	Download and decompress the archive: [http://inst.eecs.berkeley.edu/~ee123/fa12/rtlsdr/rtlsdr_osx.zip http://inst.eecs.berkeley.edu/~ee123/fa12/rtlsdr/rtlsdr_osx.zip]
		+
		+	Make sure you have the directories /usr/local/bin and /usr/local/lib
		+	If not, create them:
		+	sudo mkdir /usr/local/bin
		+	sudo mkdir /usr/local/lib
		+
		+	Copy files from the archive:
		+	sudo cp rtl_sdr rtl_tcp rtl_test /usr/local/bin/
		+	sudo cp lib* /usr/local/lib/
		+
		+	Plug in your RTL dongle and run rtl_test:
		+	rtl_test -t
		+
		+	You should see an output like this:
		+	Found 1 device(s):
		+	0: Terratec T Stick PLUS
		+
		+	Using device 0: Terratec T Stick PLUS
		+	Found Elonics E4000 tuner
		+	Supported gain values (18): -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 43.0 45.0 47.0 49.0
		+	Benchmarking E4000 PLL...
		+	[E4K] PLL not locked for 51000000 Hz!
		+	[E4K] PLL not locked for 2206000000 Hz!
		+	[E4K] PLL not locked for 1103000000 Hz!
		+	[E4K] PLL not locked for 1243000000 Hz!
		+	E4K range: 52 to 2205 MHz
		+	E4K L-band gap: 1103 to 1243 MHz
		+
		+
	== Building rtl-sdr on Mac OS X ==		== Building rtl-sdr on Mac OS X ==
	First I got the code from [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]		First I got the code from [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]

Beerus: /* Building rtl-sdr on Ubuntu 12.10 64-bit */

2013-01-17T01:38:58Z

Building rtl-sdr on Ubuntu 12.10 64-bit

← Older revision		Revision as of 01:38, 17 January 2013
Line 67:		Line 67:
	This is for getting rtlsdr and dump1090 working together on Ubuntu. Really not all that much different from the Mac OS X procedure above. I used a fresh install of Ubuntu 12.10.		This is for getting rtlsdr and dump1090 working together on Ubuntu. Really not all that much different from the Mac OS X procedure above. I used a fresh install of Ubuntu 12.10.

-	There's a few packages you'll need installed that probably are not already in a fresh Ubuntu install. So, run this (assuming you are the root user, starting off in <code>/root<code>):	+	There's a few packages you'll need installed that probably are not already in a fresh Ubuntu install. So, run this (assuming you are the root user, starting off in <code>/root</code>):

	<pre>		<pre>

Beerus: /* Building rtl-sdr on Ubuntu 12.10 64-bit */

2013-01-17T01:30:47Z

Building rtl-sdr on Ubuntu 12.10 64-bit

← Older revision		Revision as of 01:30, 17 January 2013
Line 65:		Line 65:
	== Building rtl-sdr on Ubuntu 12.10 64-bit ==		== Building rtl-sdr on Ubuntu 12.10 64-bit ==

-	Really not all that much different from the Mac OS X procedure above. I used a fresh install of Ubuntu 12.10.	+	This is for getting rtlsdr and dump1090 working together on Ubuntu. Really not all that much different from the Mac OS X procedure above. I used a fresh install of Ubuntu 12.10.

-	There's a few packages you'll need installed that probably are not already in a fresh Ubuntu install. So, run this:	+	There's a few packages you'll need installed that probably are not already in a fresh Ubuntu install. So, run this (assuming you are the root user, starting off in <code>/root<code>):

-	<~~code~~>	+	<pre>
-	~~sudo~~ apt-get install git cmake autoconf automake	+	apt-get install git cmake autoconf automake libusb-1*
-	</code>	+	</pre>
		+
		+	Let that install any dependencies as well (basically, just say "Y").
		+
		+	Next, create a directory under /root with <code>mkdir /root/git</code> and then change into it with <code>cd /root/git</code>.
		+
		+	Now run:
		+
		+	<pre>
		+	git clone git://git.osmocom.org/rtl-sdr.git
		+	cd rtl-sdr/
		+	mkdir build
		+	cd build
		+	cmake ../
		+	make
		+	sudo make install
		+	sudo ldconfig
		+	</pre>
		+
		+	That will get you the rtlsdr utilities built. Next, you need to do essentially the same for dump1090:
		+
		+	<pre>
		+	cd /root/git
		+	git clone git://github.com/antirez/dump1090.git
		+	cd dump1090/
		+	make
		+	cd /usr/local/bin
		+	ln -s /root/git/dump1090/dump1090
		+	</pre>
		+
		+	That's pretty much it! All of the rtl and dump1090 syntax documented in the Mac OS X section will work on Ubuntu.

Beerus at 01:23, 17 January 2013

2013-01-17T01:23:03Z

← Older revision		Revision as of 01:23, 17 January 2013
Line 62:		Line 62:

	Next I wrote a small program to open a connection to the rtl_tcp server, and grab all the received data, count the number of bytes per second, and display it once per second, as a quick and dirty test to see if everything was working OK. I got around 4M bytes per second, which is correctly for a 2 MHz sample rate (the data is 8 bit I/Q, so there are two bytes per sample).		Next I wrote a small program to open a connection to the rtl_tcp server, and grab all the received data, count the number of bytes per second, and display it once per second, as a quick and dirty test to see if everything was working OK. I got around 4M bytes per second, which is correctly for a 2 MHz sample rate (the data is 8 bit I/Q, so there are two bytes per sample).
		+
		+	== Building rtl-sdr on Ubuntu 12.10 64-bit ==
		+
		+	Really not all that much different from the Mac OS X procedure above. I used a fresh install of Ubuntu 12.10.
		+
		+	There's a few packages you'll need installed that probably are not already in a fresh Ubuntu install. So, run this:
		+
		+	<code>
		+	sudo apt-get install git cmake autoconf automake
		+	</code>

WikiSysop at 22:04, 16 January 2013

2013-01-16T22:04:46Z

← Older revision		Revision as of 22:04, 16 January 2013
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	*rtl-sdr software download: [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]		*rtl-sdr software download: [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]
	*Dump 1090 Mode S decoder specifically designed for RTLSDR devices: [https://github.com/antirez/dump1090 https://github.com/antirez/dump1090]		*Dump 1090 Mode S decoder specifically designed for RTLSDR devices: [https://github.com/antirez/dump1090 https://github.com/antirez/dump1090]
		+
		+	== Building rtl-sdr on Mac OS X ==
		+	First I got the code from [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]
		+
		+	I followed the instructions from [http://sdr.osmocom.org/trac/wiki/rtl-sdr http://sdr.osmocom.org/trac/wiki/rtl-sdr]
		+
		+	cd rtl-sdr/
		+	autoreconf -i
		+	./configure
		+	make
		+	sudo make install
		+	sudo ldconfig
		+
		+	The first problem was after ./configure, namely:
		+
		+	configure: error: Package requirements (libusb-1.0 >= 1.0) were not met
		+
		+	Turns out I had an ancient version of libusb.
		+
		+	sudo port install libusb
		+	solved that.
		+
		+	With the programs built, the next step was running rtl_test:
		+
		+	$ rtl_test -t
		+	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 Rafael Micro R820T tuner
		+	Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6
		+	No E4000 tuner found, aborting.
		+
		+	So far so good.
		+
		+
		+	Next I tried running rtl_fm, which lets you demodulate a FM signal. AM is supposedly also supported. I say supposedly because I could not get rtl_fm to work properly. It would run, and write demodulated sound data to a file, but playing it back always produced gibberish. Also, the files were way too large for the specified sample rate and length of time the program was running. The documentation for rtl_fm is sketchy. For example, the list of options includes:
		+	[-s sample_rate (default: 24k)]
		+
		+	which naturally makes you suspect -s sets the sample rate. It does no such thing, it actually sets the IF bandwidth. Again, supposedly.
		+
		+	After several hours of trying to get rtl_fm to work properly, I threw in the towel, and moved on to rtl_tcp, which acts as a little TCP server, sending I/Q data to a connected client. I had much better luck here. Running the program produced the following:
		+	$ ./rtl_tcp
		+	Found 1 device(s).
		+	Found Rafael Micro R820T tuner
		+	Using ezcap USB 2.0 DVB-T/DAB/FM dongle
		+	Tuned to 100000000 Hz.
		+	listening...
		+	Use the device argument 'rtl_tcp=127.0.0.1:1234' in OsmoSDR (gr-osmosdr) source
		+	to receive samples in GRC and control rtl_tcp parameters (frequency, gain, ...).
		+
		+	I then connected to it via telnet in another console window:
		+	$ telnet 127.0.0 1234</code>
		+
		+	And the rtl_tcp server program responded with:
		+	client accepted!
		+	and proceeded to send I/Q data to my telnet session, which spewed it to the window. Mission accomplished.
		+
		+	Next I wrote a small program to open a connection to the rtl_tcp server, and grab all the received data, count the number of bytes per second, and display it once per second, as a quick and dirty test to see if everything was working OK. I got around 4M bytes per second, which is correctly for a 2 MHz sample rate (the data is 8 bit I/Q, so there are two bytes per sample).

WikiSysop at 00:56, 15 January 2013

2013-01-15T00:56:30Z

← Older revision		Revision as of 00:56, 15 January 2013
Line 1:		Line 1:
	An inexpensive [[Software Defined Radio]] using the DVB-T dongles based on the Realtek RTL2832U.		An inexpensive [[Software Defined Radio]] using the DVB-T dongles based on the Realtek RTL2832U.
		+
		+	*Osmocom rtl-sdr site: [http://sdr.osmocom.org/trac/wiki/rtl-sdr http://sdr.osmocom.org/trac/wiki/rtl-sdr]
		+	*rtl-sdr software download: [http://cgit.osmocom.org/cgit/rtl-sdr/ http://cgit.osmocom.org/cgit/rtl-sdr/]
		+	*Dump 1090 Mode S decoder specifically designed for RTLSDR devices: [https://github.com/antirez/dump1090 https://github.com/antirez/dump1090]

WikiSysop: Created page with "An inexpensive Software Defined Radio using the DVB-T dongles based on the Realtek RTL2832U."

2013-01-15T00:50:46Z

Created page with "An inexpensive Software Defined Radio using the DVB-T dongles based on the Realtek RTL2832U."

New page

An inexpensive [[Software Defined Radio]] using the DVB-T dongles based on the Realtek RTL2832U.