C Breeki Wiki

AUDIO OUTPUT:

Pulseaudio has an extra device named "Virtual_Sink". This is to enable easier inter-programme audio decoding and output of digital signals. Please check your audio output device settings if, for instance, your browser's sound is not working!

This distribution contains only RTL2832U chipset family rtl_sdr drivers and modules, and concentrates on providing terrestial HF/VHF/UHF signal processing and portable DAB+ reception with the cheapest and most availible equipment. No other devices are supported. This distribution is intended for experimentation and legal listening purposes only. NOTE: No TETRA or similar trunked system decoders are included in this distribution for legal reasons.

PyBOMBS are ready to drop.
i386 wine32 is installed.
gqrx-sdr-2.11.5-linux-x64 binary lives in its own desktop folder.
sudo password is "gorizont", no quotes.

If any new or update packages break on apt-get install, remove Deadbeef ;-)

Thanks goes out to Aleksander Przewozniak for his atmospheric rendering of Duga-1 being used as (slightly defaced) wallpaper, and all the other coders, repo maintainers and radio freaks whose work I've bundled and prodded into this distro.

https://rtl-sdr.com FTW.

RTL POGSAG

gqrx in UDP mode.

nc -l -u -p 7355 | sox -t raw -esigned-integer -b16 -r 48000 - -esigned-integer -b16 -r 22050 -t raw - | multimon-ng -t raw -a POCSAG512 -a POCSAG1200 -a POCSAG2400 -a AFSK1200 -a AFSK2400 -a AFSK2400_2 -a AFSK2400_3 -a FLEX -a EAS -a CLIPFSK -a FMSFSK -a HAPN4800 -a FSK9600 -a X10 -f alpha -

SDR V3 KIT ANTENNA RESONANCE

Large Antenna, 5 Sections, 100cm + 2cm is resonant @ ~70 MHz
Large Antenna, 4 Sections, 80cm + 2cm is resonant @ ~87MHz
Large Antenna, 3 Sections, 60cm + 2cm is resonant @ ~115 MHz
Large Antenna, 2 Sections, 42cm + 2cm is resonant @ ~162 MHz
Large Antenna, 1 Section, 23cm + 2cm is resonant @ ~ 285 MHz
Small Antenna, 4 Sections, 14cm + 2cm is resonant @ ~445 MHz
Small Antenna, 3 Sections, 11cm + 2cm is resonant @ ~550 MHz
Small Antenna, 2 Sections, 8cm + 2cm is resonant @ ~720MHz
Small Antenna, 1 Section, 5cm + 2cm is resonant @ ~1030 MHz.

Other software like HDSDR and GQRX can also support direct sampling. It may entail setting a device string, and for the Q-branch, the value should be 2 (or sometimes 3). In GQRX the device string would be "rtl=0,direct_samp=2" (without the quotes). In some installs that use different drivers it may be "rtl=0,direct_samp=3" instead.

It is recommended that users also install the libvolk1-bin package and run the volk_profile tool to optimize GNU Radio performance on the specific computer it is being used on.

sudo apt-get install libvolk1-bin
volk_profile

DSDPlus.EXE digital to audio decoding

start DSD+ by opening a command prompt in /home/cb/Desktop/DSD

Then Enter:

wine DSDPlus.exe

Pulseaudio instructions:

On the Playback tab make sure GQRX is outputting audio to the Virtual Sink and make sure DSDPlus.exe is outputting audio to your audio-output soundcard.

Now on the Recording tab make sure dsdplus.exe is set to “Monitor of Virtual_Sink”

With GQRX on a digital channel, the audio piped to Virtual Sink, and DSD+ open, and Pulseaudio set as above you should be decoding audio.