https://github.com/F5OEO/rpitx Skip to content Sign up * Product + Features + Mobile + Actions + Codespaces + Packages + Security + Code review + Issues + Integrations + GitHub Sponsors + Customer stories * Team * Enterprise * Explore + Explore GitHub + Learn and contribute + Topics + Collections + Trending + Learning Lab + Open source guides + Connect with others + The ReadME Project + Events + Community forum + GitHub Education + GitHub Stars program * Marketplace * Pricing + Plans + Compare plans + Contact Sales + Education [ ] * # In this repository All GitHub | Jump to | * No suggested jump to results * # In this repository All GitHub | Jump to | * # In this user All GitHub | Jump to | * # In this repository All GitHub | Jump to | Sign in Sign up {{ message }} F5OEO / rpitx Public * Notifications * Fork 411 * Star 3k RF transmitter for Raspberry Pi GPL-3.0 License 3k stars 411 forks Star Notifications * Code * Issues 73 * Pull requests 9 * Actions * Projects 0 * Wiki * Security * Insights More * Code * Issues * Pull requests * Actions * Projects * Wiki * Security * Insights This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. master Switch branches/tags [ ] Branches Tags Could not load branches Nothing to show {{ refName }} default View all branches Could not load tags Nothing to show {{ refName }} default View all tags 4 branches 2 tags Code Latest commit Your Name Change FT8_lib to a fork ... cce1fe6 Jan 13, 2021 Change FT8_lib to a fork cce1fe6 Git stats * 302 commits Files Permalink Failed to load latest commit information. Type Name Latest commit message Commit time Not_working_with_v2 Remove coonflict Nov 6, 2018 csdr sharedmem Jun 7, 2020 doc Add files via upload Jan 9, 2020 src Use librpitx for sendiq and tune Jan 13, 2021 .gitignore Set gitignore binaries to absolute paths Feb 28, 2016 BBC.jpg Clean and add tests Nov 1, 2018 LICENCE Fix merge by hand Nov 6, 2018 README.md Update README.md Jul 23, 2020 easytest.sh Added RTTY to easytest Jan 2, 2021 fm2ssb.sh Fixe typo issue Dec 3, 2018 ft8menu.sh Add initial FT8 menu Jan 9, 2019 install.sh Change FT8_lib to a fork Jan 13, 2021 rtlmenu.sh Remove debug Dec 3, 2018 sampleaudio.wav Add ssb using csdr Nov 1, 2018 snap2spectrum.sh Fix shellcheck issues Dec 1, 2018 snapsstv.sh Fix shellcheck issues Dec 1, 2018 sv1afnfilter.sh Put output at each time on sv1afnfilter Jan 8, 2019 testam.sh Fix shellcheck issues Dec 1, 2018 testchirp.sh Fix shellcheck issues Dec 1, 2018 testfmrds.sh Fix shellcheck issues Dec 1, 2018 testfoxhunt.sh testfoxhunt is executable Nov 3, 2020 testfreedv.sh Fix shellcheck issues Dec 1, 2018 testfsq.sh Fix shellcheck issues Dec 1, 2018 testnfm.sh Fix shellcheck issues Dec 1, 2018 testopera.sh Fix shellcheck issues Dec 1, 2018 testpocsag.sh Fix shellcheck issues Dec 1, 2018 testrtty.sh Forgot sudo Jan 2, 2021 testspectrum.sh Fix shellcheck issues Dec 1, 2018 testssb.sh Fix shellcheck issues Dec 1, 2018 testsstv.sh Fix shellcheck issues Dec 1, 2018 testvfo.sh Fix shellcheck issues Dec 1, 2018 transponder.sh Remove debug Dec 3, 2018 View code [ ] About rpitx Installation Hardware How to use it Easytest Carrier Chirp Spectrum RfMyFace FM with RDS Single Side Band modulation (SSB) Slow Scan Television (SSTV) Pocsag (pager mode) Freedv (digital voice) Opera (Beacon) Rpitx and low cost RTL-SDR dongle Record and play Transponder Relay with transmodulation To continue Credits README.md rpitx banner About rpitx rpitx is a general radio frequency transmitter for Raspberry Pi which doesn't require any other hardware unless filter to avoid intererence. It can handle frequencies from 5 KHz up to 1500 MHz. Rpitx is a software made for educational on RF system. It has not been tested for compliance with regulations governing transmission of radio signals. You are responsible for using your Raspberry Pi legally. A forum is available : https://groups.io/g/rpitx _Created by Evariste Courjaud F5OEO. See Licence for using it. Installation Assuming a Raspbian Lite installation (stretch) : https:// www.raspberrypi.org/downloads/raspbian/ Be sure to have git package installed : sudo apt-get update sudo apt-get install git You can now clone the repository. A script (install.sh) is there for easy installation. You could inspect it and make steps manualy in case of any doubt. You can note that /boot/config.txt should be prompt to be modified during the installation. If it is not accepted, rpitx will be unstable. git clone https://github.com/F5OEO/rpitx cd rpitx ./install.sh Make a reboot in order to use rpitx in a stable state. That's it ! sudo reboot Hardware bpf Raspberry Model Status Pizero OK PizeroW OK PiA+ OK PiB Partial PiB+ OK P2B OK Pi3B OK Pi3B+ OK Pi4 In beta mode Plug a wire on GPIO 4, means Pin 7 of the GPIO header (header P1). This acts as the antenna. The optimal length of the wire depends the frequency you want to transmit on, but it works with a few centimeters for local testing. How to use it easymenu Easytest easytest is the easiest way to start and see some demonstration. All transmission are made on free ISM band (434MHZ). To launch it, go to rpitx folder and launch easytest.sh : cd rpitx ./easytest.sh Choose your choice with arrows and enter to start it.Don't forget, some test are made in loop, you have to press CTRL^C to exit and back to menu. Easy way to monitor what you are doing is by using a SDR software and a SDR receiver like a rtl-sdr one and set the frequency to 434MHZ. Carrier Carrier A simple carrier generated at 434MHZ. Chirp Chirp A carrier which move around 434MHZ. Spectrum Spectrum A picture is displayed on the waterfall on your SDR. Note that you should make some tweaks in order to obtain contrast and correct size depending on your reception and SDR software you use. RfMyFace Rfmyface Spectrum painting of your face using the raspicam for fun ! FM with RDS FMRDS Broadcast FM with RDS. You should receive it with your SDR. This is the modulation that you should hear on your classical FM Radio receiver, but at this time, the frequency is too high. Single Side Band modulation (SSB) SSB This is the classical Hamradio analog voice modulation. Use your SDR in USB mode. Slow Scan Television (SSTV) SSTV This is a picture transmission mode using audio modulation (USB mode). You need an extra software to decode and display it (qsstv,msstv...). This demo uses the Martin1 mode of sstv. Pocsag (pager mode) pocsag This is a mode used by pagers. You need an extra software to decode. Set your SDR in NBFM mode. Freedv (digital voice) freedv This is state of the art opensource digital modulation. You need Freedv for demodulation. Opera (Beacon) opera This a beacon mode which sound like Morse. You need opera in mode 0.5 to decode. Rpitx and low cost RTL-SDR dongle rtlmenu rtlmenu allows to use rtl-sdr receiver dongle and rpitx together. This combine receiver and transmission for experimenting. To launch it, go to rpitx folder and launch rtlmenu.sh : ./rtlmenu.sh You have first to set receiver frequency and gain of rtl-sdr. Warning about gain, you should ensure that you have enough gain to receive the signal but not to strong which could saturate it and will not be usefull by rpitx. Choose your choice with arrows and enter to start it.Don't forget, some test are made in loop, you have to press CTRL^C to exit and back to menu. Record and play replay A typical application, is to replay a signal. Picture above shows a replay of a signal from a RF remote switch. So first, record few seconds of signal, CTRL^C for stop recording. Then replay it with play. Transponder fmtransponder We can also live transmitting a received band frequency. Here the input frequency is a FM broadcast station which is retransmit on 434MHZ. Relay with transmodulation We assume that input frequency is tuned on FM station. It is demodulated and modulate to SSB on 434MHZ. SSB is not HiFi, so prefere to choose a talk radio, music sounds like bit weird ! To continue rpitx is a generic RF transmitter. There is a lot of modulation to do with it and also documentation to make all that easy to contribute. This will be the next step ! Feel free to inspect scripts, change parameters (frequencies, audio input, pictures...). Credits All rights of the original authors reserved. I try to include all licences and authors in sourcecode. Need to write all references in this section. About RF transmitter for Raspberry Pi Resources Readme License GPL-3.0 License Stars 3k stars Watchers 203 watching Forks 411 forks Releases 2 Last release of v1 rpitx Latest Nov 6, 2018 + 1 release Packages 0 No packages published Contributors 17 * * * * * * * * * * * + 6 contributors Languages * C 43.7% * Assembly 26.2% * C++ 24.0% * Shell 2.5% * Python 2.2% * Makefile 0.8% * Objective-C 0.6% * (c) 2022 GitHub, Inc. * Terms * Privacy * Security * Status * Docs * Contact GitHub * Pricing * API * Training * Blog * About You can't perform that action at this time. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.