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Using DVB-T sticks as Wideband SDR Receivers

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Presentation on theme: "Using DVB-T sticks as Wideband SDR Receivers"— Presentation transcript:

1 Using DVB-T sticks as Wideband SDR Receivers
Phil Crump M0DNY

2 Architecture I smell very cheap poor man's software radio here :) – Antti Palosaari

3 E4000 Tuner 50-2200MHz Tunable CMOS Bandpass filter Zero-IF I/Q output
Gap at MHz Tunable CMOS Bandpass filter Zero-IF I/Q output

4 RTL2832 ADC DVB-T Demodulator Also contains 8-bit ADC at up to 3.2Msps
Designed for WFM, DAB. Est. 48dB Dynamic Range

5 Vs Funcube Dongle Funcube Dongle Pro RTL-SDR TV Dongle

6 Vs Funcube Dongle (Specs)
FCD Pro FCD Pro + RTL-SDR (E4000) Bandwidth ~80KHz 192KHz 3.2 MHz ADC Resolution 16 bits (~14 actual) 24 bits (~20 actual) 8 bits (~7 actual) Dynamic Range ~90dB ~120dB ~42dB XTAL Accuracy ~50ppm 0.5ppm TCXO ~200ppm Cost £100 £125 ~£20

7 Potential Uses Anything the FCD can do Wider Bandwidth stuff
WFM, NFM, SSB, TETRA, ... Wider Bandwidth stuff ADS-B, GSM, LTE, GPS, ... Yes, even GPS!

8 Software Windows Linux Zadig for drivers SDR # (SDR Sharp) GNU Radio
gqrx QT Radio

9 Time to see how good a Faraday cage this place is..
Demo Time to see how good a Faraday cage this place is..

10 VHF NFD (2m SSB Band)

11 E4000 Frontend Filter

12 Add-ons HF Upconverters LNAs Push HF up to ~100MHz
With bandpass Filters

13 Useful Tips ESD Diode often not installed. Crystal Temperature
BAV99 is a suitable replacement. Crystal Temperature Keep it out of the wind! USB Extension cable

14 Availability eBay: ~£20 Alternative Tuner Chips: Beware scam sites.
FC0012/FC0013 FC2580 Beware scam sites.

15 More Information http://sdr.osmocom.org/trac/wiki/rtl-sdr
##rtlsdr on irc.freenode.net Slides and references will be available at: https://www.thecraag.com/RTL-SDR

16 Questions?


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