Sep 192014
 

Finally received my DVB-T/DAB/FM dongle and more precisely my R820T tuner.

This, with the proper drivers (here), will allow me to « listen » to my RF433 radio devices.

sdrsharp

Even better I can record my signal in audacity using a « virtual audio cable« . (note that are free alternatives).

Or else I can display my packets using rtl_433_win32 (although not decoded properly).

rtl_433

Note : ab 53 32 cb 54 d5 4b 2a 80 is a chacon remote control (to switch on/off a 220v plug outlet).

We can see in audacity the pattern repeated 5 times.

rf433_Audacity

Zooming in one pattern, we can see high and low bits.

rf433_Audacity2

Now the challenge is the following :
-snif a RF433 packet and decode it
-replay it with my Arduino+CC1101

How fun 🙂

 Posted by at 20 h 00 min

  One Response to “SDR as in Software Defined Radio Part 1”

  1. […] a previous article, we had managed to snif & record RF signals, decode it and reproduce it with […]

 Leave a Reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

(required)

(required)