sdr.txt

# getting live preview
rtl_433
# witj JSON output
rtl_433 -F JSON
# ^^ 433MHz is where typical house-hold thermometers transmit

# GUI for visualization / waterfall plot
apt install cubicsdr
CubicSDR
# alt:
SDR++


# (W)M-bus (electricity / water / gas meters)
step by step instructions: https://dev.to/ordigital/zdalny-odczyt-licznika-amiplus-z-hanplus-m-bus-15o1
projects / libs:
* https://github.com/xaelsouth/rtl-wmbus
* https://github.com/wmbusmeters/wmbusmeters

usually running ~868.9MHz


# analog PMR
* around 446.0MHz - 446.2MHz
* 12.5kHz channel spacing
* (NB)FM modulation
* ~6kHz bandwidth is enough


### UNSORTED (WIP)

# random
apt install rtl-sdr
apt install gnuradio

# Chris

gqrx-sdr - Software defined radio receiver
multimon-ng - digital radio transmission decoder

https://konektor5000.pl/index.php?p4657,yard-stick-one-great-scott-gadgets-nadajnik-odbiornik-sdr-3-pasmowy-np-do-radio-hackingu
https://greatscottgadgets.com/yardstickone/

https://www.gqrx.dk/

```
git clone https://github.com/osmocom/rtl-sdr.git
cd rtl-sdr
mkdir build && cd $_
cmake -DINSTALL_UDEV_RULES=ON -DDETACH_KERNEL_DRIVER=ON ..
make
sudo make install
```