Step 6: Mobile SDR
Step 7: Microphone Transmitter Kit
GNU Radio is a free and open-source software
development toolkit that provides signal processing
blocks to implement software radios. It can be used
with readily-available external RF hardware to create
software-de ned radios. GNU Radio is widely used in
hobbyist, academic, and commercial environments to
support both wireless communications research and
real-world radio systems.
There are many avors and implementations of GNU
Radio. GQRX is a nice variant for OSX and Linux users.
SDR Touch can turn your mobile phone or tablet into
an a ordable and portable software de ned radio
scanner. Listen to live on air FM radio stations,
weather reports, police, re department and
emergency stations, taxi tra c, airplane
communications, audio of analogue TV broadcasts,
HAM radio amateurs, digital broadcasts, and many
more.
An on-the-go (OTG) USB cable or adapter is required
to connect the SDR USB dongle to a mobile device. An
OTG cable with an extra (auxiliary) power port may be
required to power the dongle. An extra power port
may be a good idea regardless, as an app like SDR
Touch is prone to rapidly draining the batteries pf
mobile devices.
https://www.youtube.com/watch?v=KBygxaLthZ8
This soldering kit is a simple three-transistor frequency modulating (FM) audio transmitter. It operates in the
frequency range of 80MHz-108MHz allocated for FM broadcast radio. The working voltage of the transmitter is
1.5V-9V and it will transmit over 100 meters depending upon supplied power, antenna con guration, tuning, and
ambient electromagnetic factors.
Kit Contents:
HackerBox 0034: SubGHz: Page 5
