SDR Sharp

N.E. Ohio Weather Alerts:

......There are no active watches, warnings or advisories.......

10 Latest QSO's Are:

W6BRY(RTTY, UNITED STATES, CA) WY7FD(RTTY, UNITED STATES, WY) KE1F(RTTY, UNITED STATES, FL) K4WI(RTTY, UNITED STATES, AL) N8OO(RTTY, UNITED STATES, LA) W4AAA(RTTY, UNITED STATES, NC) K9WX(RTTY, UNITED STATES, IN) N6XI(RTTY, UNITED STATES, CA) N2BJ(RTTY, UNITED STATES, IL) WB4HRL(RTTY, UNITED STATES, SC)

Untitled Document HOME PAGE

MAIN TOPICS

Aviation Operating Modes SDR Slow Scan TV My Logbook Awards My Station Weather My Projects Miscellaneous

ABOUT

N8MDP Contact Me

Tweets by n8mdp

What is GQRX?

Gqrx is an open source software defined radio receiver (SDR) powered by the GNU Radio and the Qt graphical toolkit.

Click on image to enlarge

Check out these interesting GQRX videos

GQRX supports many of the SDR hardware available, including Airspy, Funcube Dongles, rtl-sdr, HackRF and USRP devices. See supported devices for a complete list.

Gqrx SDR is available as binary package for the Raspberry Pi 3 running Raspbian Stretch and other ARM v6 running a Debian Stretch based OS. Please understand that Gqrx on ARM is still very experimental! It does not work as well as on a desktop computer and installation requires some basic Linux skills. You can download a GQRX version SDR 2.11 for Raspberry Pi 3 here (alternate download: SourceForge). Drivers included: Rtlsdr, Airspy, SDRPlay, HackRF, RFSpace, Funcube Dongle, Red Pitaya and SoapySDR (no plugins). It has been reported that using the HDMI audio results in unstable, stuttering audio output. The GQRX developers recommend using the headset jack instead. Please see here about switching.

The generic installation steps are pretty straight forward:

1. Download the package

2. Unpack the package

3. Install the dependencies, see included readme.txt

4. Install the udev rules for the SDR device you want to use, see included readme.txt

Device support Running Gqrx on the Raspberry Pi is still experimental and a compromise at best. You should not expect the same performance as on a desktop PC.

Gqrx is free software, licensed under the GNU General Public license allowing anyone to fix and modify it for their use. Gqrx offers features like:

• Discover devices attached to the computer.

• Process I/Q data from the supported devices.

• Change frequency, gain and apply various corrections (frequency, I/Q balance).

• AM, SSB, CW, FM-N and FM-W (mono and stereo) demodulators.

• Special FM mode for NOAA APT.

• Variable band pass filter.

• AGC, squelch and noise blankers.

• FFT plot and waterfall.

• Record and playback audio to / from WAV file.

• Record and playback raw baseband data.

• Spectrum analyzer mode where all signal processing is disabled.