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07-26-2012 06:50 AM - edited 07-26-2012 06:51 AM
A wonderful hack to play with:
Search the youtube for
RTLSDR or SDR#
Just tried it with my 14.95EUR LogiLink USB DVBT stick, Zadig driver and SDR# (nightly edition) on W7. A software defined radio spanning <70MHz to >1GHz with 1MHz bandwidth 😄
Nice to poke for EMV issues, listening to FM radio or sit in the plane and listen to the tower/pilot 😉
USB sticks with certain REALTEK USB DVB-T decoder IC and some types of down mixer chips can be switched to a mode where the raw 2MS/S 8bit IQ data is send over the USB
I have no experience with DLL calls, but would love to have a LabVIEW link to that.
http://hackaday.com/tag/rtl-sdr/
http://www.youtube.com/watch?v=V73q1p1yOHw
07-27-2012 11:07 AM
About two or three weeks ago, I actually found the exact same links. Certainly would be useful to do a poor mans USRP. 😄
Would be cool to be able to tap into it using LabVIEW.
06-05-2013 12:20 PM
Well, somebody is working on that.
See this link: http://ha5kfu.sch.bme.hu/node/94
It uses rtl_tcp server isntead of calls to DLL but looks quite interesting. Do not know if he will share vi´s.
Cheers.
Alipio.
06-06-2013 03:43 AM - edited 06-06-2013 04:03 AM
I was able to demodulate a 40MHz heterodyne laser IF signal with the DVBT-stick , with SDR# rigth out of the box (laser mic 🙂 ) , with LV not in realtime.... (to much load for my tiny DELL430) but with scaled acceleration output.
The current DAQ for that is a PXI system with a 5124 about 1k times the value, but not really compareable 😉
06-11-2013 07:57 PM
With an assist from the libusb bulk transfer interface, it was pretty darn easy to get this going. Glad I got my old Elonics E4000 when I did, they are apparently discontinued.
Here is a local FM radio station:
06-12-2013 12:35 AM
@Darin.K wrote:
With an assist from the libusb bulk transfer interface, it was pretty darn easy to get this going. Glad I got my old Elonics E4000 when I did, they are apparently discontinued.
Here is a local FM radio station:
Scale is weird.
How do you get from a center frequency of 9.2 MHz to a center frequency of 2100?
06-12-2013 12:52 AM
06-12-2013 01:17 AM
Hello.
Can you post vis to call rtlsdr DLL please?
TCP runs fine but USB seems better for local use.
Cheers.
Alipio.
06-12-2013 02:15 AM
@Darin.K wrote:
Glad I got my old Elonics E4000 when I did, they are apparently discontinued.
According to this table
Tuner | Frequency range |
Elonics E4000 | 52 - 2200 MHz with a gap from 1100 MHz to 1250 MHz (varies) |
Rafael Micro R820T | 24 - 1766 MHz |
Fitipower FC0013 | 22 - 1100 MHz (FC0013B/C, FC0013G has a separate L-band input, which is unconnected on most sticks) |
Fitipower FC0012 | 22 - 948.6 MHz |
FCI FC2580 | 146 - 308 MHz and 438 - 924 MHz (gap in between) |
Source: http://sdr.osmocom.org/trac/wiki/rtl-sdr
the E4000 has the widest possible range ( I got mine for 10EUR incl shipping 🙂 and a FC0013 is also flying around)
However, he HAM guys prefer the R820T, lower range, no gaps and said to be the most sensitive ....
“Buy a $10 radio and a $100 antenna” - Old ham radio saying.
10-08-2013 06:04 AM
Hi all.
Code for playing wirh Labview and RTLSDR by HA5KFU is available in: http://ha5kfu.sch.bme.hu/sdrlab
Cheers.
Alipio.