Wspr code. Mar 17, 2025 · WSPR (short for Weak Signal Propagation Reporter) is an amateur radio beacon protocol. This guide covers setup, operation, and system requirements. About Ham Radio WSPR Beacon running on an Arduino. - alexranald A large-scale beacon project is underway using the WSPR transmission scheme included with the WSJT software suite. However, to generate symbold stream for other modes like js65,jt4,jt8 you will need command-line utilities jt65code, jt4code, jt9code. Power is in dBm. Portions of the GPS receive code were derived from Igor Gonzalez Martin’s Arduino tutorial. They use nearly identical message structure and source encoding. Data is fed sequentially into the left-most shift register, and, for a rate = 1⁄2 code, the output stream consists of 2 bits for each shift – c0 and c1 (code symbols) WSPR (short for Weak Signal Propagation Reporter) is an amateur radio beacon protocol. Typical applications involve "DXing" at LF, MF, HF, and VHF+ frequencies, including meteor scatter and EME ("moonbounce"). WSPR (pronounced “whisper”) stands for Weak Signal Propagation Reporter. WSPR is a very weak signal digital mode protocol that uses very little bandwidth, but is not suitable for conversations. org online database. There are four main tools currently available within the WSPR Scheduler suite of apps: 1) the WSPR Scheduler includes encoding software to transmit a WSPR signal within each timeslot & a decoder to receive & display received WSPR QRPGuys EZ WSPR Pi QRPGuys KD1JV Code Trainer QRPGuys LA3ZA Zero Beat Indicator QRPGuys Micro 40-15m EFHW Tuner/Antenna QRPGuys Mini 80m-10m No Tune End Fed Half Wave Antenna QRPGuys Multi-DC 10/12/15m CW Transceiver QRPGuys Pacificon DSB/CW Transceiver Kit QRPGuys Portable 40/30/20m Tri-Band Vertical Antenna QRPGuys Portable 80/60m Vertical . It is the fastest, smartest way to type with your voice. GitHub Gist: instantly share code, notes, and snippets. WSPR Scheduler is an app that allows WSPR timeslots to be scheduled. Frequencies 17:21:32 PM: /Warning: Your custom mode map WSPR conflicts with the standard mode definition for WSPR and was deleted. Contribute to eicket/myWSJTEncoder development by creating an account on GitHub. 47 3B 86 EB 92 77 80 Transmission Spectrogram Wspr Exporter The Wspr Exporter allows you to easily download large chunks of the wspr database filtered by some simple parameters. WSPR messages normally carry the transmitting station’s callsign, grid locator, and transmitter power in dBm, and they can be decoded at signal-to-noise ABC offers world-class shopping, dining, and entertainment experiences in Lebanon. It is a protocol, implemented in a computer program, used for weak- signal radio communication between amateur radio operators. The WSJT project implements software for amateur radio communication using state-of-the-art digital techniques. WSPR (pronounced "whisper") stands for "Weak Signal Propagation Reporter". The WSPR protocol was designed for probing potential propagation paths using low-power transmissions. Learn how to use WSPR 3. INC file for direct importation into PIC microcontroller code of the WSPR symbols for any given source message. The most popular is the integrated WSPR decoder and Time Difference of Arrival (TDoA) signal direction finder. Transmissions encode a station’s callsign, location (grid square), and transmitter power into a frequency-shift-keyed (FSK) signal that hops between 4 frequencies to send 162 tones in just under two minutes. Signal above Threshold = WSPR Spot SNR + WSPR Threshold - Mode Threshold + Transmitter Power - WSPR Spot Power + Antenna gain - WSPR Antenna gain Mark Hughes, GM4ISM, has written and published macro code in a Microsoft Excel spreadsheet 3 that retrieves a user specified subset of data from the WSPRnet. You do not need to understand any of this in order to make a WSPR transmitter. Used to display the straight-key transmission sequence for If non-blank, show only those spots involving the specified call Program for decoding FT8, FT4, JT65 and WSPR with Software Defined Radio receivers (SDR) and sending spots to spotting networks such as Reverse Beacon Network, PSKReporter and WSPRNet. P. Q65 Material Needed to Replicate the 100mw Transmitter shown in the YouTube Video - jmharvey1/100mw-WSPR-Transmitter These are signals used by and sometimes created by amateur radio enthusiasts and operators, including many experimental digital modes. WSJT-X_IMPROVED is published by Uwe Risse, DG2YCB. The first seven are designed for making reliable QSOs under weak-signal conditions. JT9 was developed after JT65 5. * Next, make sure that the encoder switch's "CLK" pin is connected to your UNO's digital pin 2. WSPR Weak Signal Propagation Reporter WSPR (usually pronounced “whisper”) is a software application that uses the transmission mode MEPT-JT (Manned Experimental Propagation Transmitter – Joe Taylor). QMX+ also incorporates standalone CW, FSKCW and WSPR beacon functionality (no PC connection required). 11 meters is often defined as 25-28 MHz / 25000-28000 kHz or 26-28 MHz / 26000-28000 kHz. In MEPT transmissions, the radio becomes a beacon that transmits for just under 2 minutes, transmitting callsign, locator and power information. This can be used directly for producing transmission sequences for the Arduino/AD9851 based transmitter below, or as a library to encode the WSPR protocol. In case you want to do things manually, there is now a new method called set_freq_manual () (see below for details). 17:21:32 PM: /Attempting to upload 2 QSOs 17:21:33 PM: /C:\Program Files\LogsAreUs\LotWUpload. I first tried WSPR out in 2009, with a Signalink USB interface attached to my FT-817 and PC. WSPR / FT4 / FT8 encoder and audio generator. Implementation By studying and modifying the C code (and in the process having to learn and getting to quite like the C language) I managed to write software that generates a . Morse code, sent by way of CW, engages… Arduino based WSPR Transmitter. Robertson DOI for the repository: 10. A simple and easy WiFi-enabled ESP8266-powered WSPR, FT8, and FT4 beacon system which uses NTP + DS3231 RTC for timing. It’s one of the many protocols used by radio amateurs but WSPR is a special one. WSPR (pronounced "whisper") is an acronym for Weak Signal Propagation Reporter. Those two changes should cover nearly all upgrade scenarios, unless you were doing some lower-level use of the Si5351. 88-16 SDR and SDRlab 122-16: SDR receiver SDR transceiver SDR transceiver compatible with HPSDR SDR receiver compatible with HPSDR Multiband WSPR transceiver Download WSPR Scheduler for free. - ast/wsprd The compound callsign/6 digit locator algorithms were derived from FORTRAN and C++ programs found in K1JT’s WSPR source code. But you can use much less Contribute to benmarten/wspr-tracker development by creating an account on GitHub. 0 for weak signal propagation reporting. WSPR is a digital radio communication protocol designed for weak signal transmission. Weak signal ham radio communication. The definitive guide to WSPR Weak Signal Propagation Reporter (WSPR, pronounced:” whisper”) is a protocol developed by John Taylor, K1JT in 2008. Source Code for AD9851 Simple WSPR Transmitter You’ll need to generate your own data, as detailed in the text. This code Utilizes an Si5351 for signal generation, and a GPS for timing & Maidenhead location computation. It is rarely used to Multiband WSPR transceiver Multiband FT8 transceiver Pulsed NMR system Multichannel Pulse Height Analyzer Scanning system Vector Network Analyzer Applications for Red Pitaya STEMlab 122. WSPR, which stands for Weak Signal Propagation Reporter, is a program used to test the propagation paths of RF signals between amateur radio operators using a narrowband digital transmission protocol called MEPT_JT on the HF and MF frequency bands. Download WSJT for free. QMX+ shares most of its schematic, features and performance with QMX. The 11 meter band is used by both CB radio, as well as freeband unlicensed hobbyists, Church radio broadcasts in Ireland and elsewhere in Europe, the military, for studio-to-transmitter links (STLs), data links, buoys, fishnet tracking systems, pagers and other non-voice purposes. WSPR GoogleEarth Visualizer This service allows you to add real time spots to Google Earth. 5281/zenodo About WSPR WSPR, “Weak Signal Propagation Reporter,” is a protocol for low-power, digital communication on amateur radio frequencies. Data is fed sequentially into the left-most shift register, and, for a rate = 1⁄2 code, the output stream consists of 2 bits for each shift – c0 and c1 (code symbols) WSPR (pronounced "whisper") stands for "Weak Signal Propagation Reporter". It utilizes 2 minute long transmission times and provides callsign, location, and power information. WSPR (Weak Signal Propagation Reporter) Stand Alone Beacon: Hello community - Dave here (radio callsign G7IYK), I have very pleased to publish details of my latest project which is a WSPR or Weak Signal Propagation Reporter beacon. In your old code, you can delete the 2nd parameter in set_freq (), which was the PLL frequency. Overview WSPR (pronounced "whisper") stands for “Weak Signal Propagation Reporter. 10 Milliwatt Si5351A WSPR Beacon. WSJT-X Version 2. * The first thing you'll need to do, is find these two lines in the sketch. The WSPR Laboratory (pronounced “whisper”) models, designs, builds, and validates technology that protects users, systems, and networks from malicious and privacy-infringing acts. In my experience anything reported as -10 or larger is a suspect SNR. WSPR Scheduling application with automatic antenna selection. Theory of the WSPR Protocol This section is the theory of how WSPR works. * int S [162]; * int D [162]; * and change their variable types from "int" to "byte" * This will "free up" some SRAM and will allow the UNO run stably. Contribute to zleffke/arduino_wspr development by creating an account on GitHub. The “Weak Signal”-part refers to signals being transmitted with a maximum power of 5 Watt (37 dBm), what still is regarded as QRP. If you use this code for your research, please cite the works from which the code is derived where possible (ask if you are unsure). Similar Approaches There is a very similar site for the WSPR protocol called WSPRnet. This program implements transmitting and receiving functions for a digital soundcard mode called "MEPT_JT", or simply "the WSPR mode". It is a computer program used for weak-signal radio communication between amateur radio operators. Kudos to @NT7S for the comprehensive Si5351 code; I started with his Arduino library (that I previously contributed to) and pared it back down to C for inclusion in the ESP-IDF project. The DSP code as written does not know what to do with a positive SNR signal 3. It is available in WSJT and WSJT-X. The loosely coordinated beacon transmitters and receivers, collectively known as the WSPRnet, report the real-time propagation characteristics of a number of frequency bands and geographical locations via the Internet. WSPR 4 is not a two-way communications mode, but a Beacon mode. The WSPR Coding Process I wanted a simple way of generating the symbols for programming into a WSPR beacon source consisting of a PIC microcontroller and DDS frequency generator. The “Constraint Length” of the code K is equal to the number of shift registers + The “Rate” of the code r is the number of incoming data bits per output bit. Increasingly, the software is also being used for data on VHF and UHF frequencies using faster modes such as 8-PSK. ADI: Log uploaded successfully with result "File queued for processing"! The WSPR beacon message in defined directly in the code in text form. Narrow DSP filtering and coding increases low signal reception by another 8 db. WSPR (usually pronounced “whisper”) is a software application that uses the transmission mode MEPT-JT (Manned Experimental Propagation Transmitter – Joe Taylor). Such communications are normally done on the shortwave amateur radio bands in modes such as PSK31, MFSK, RTTY, Olivia, and CW (Morse code). It is an enhanced edition of the excellent WSJT-X software by Joe Taylor K1JT, Steve Franke… Flow makes writing quick and clear with seamless voice dictation. org. The compound callsign/6 digit locator algorithms were derived from FORTRAN and C++ programs found in K1JT’s WSPR source code. In addition, please cite this code repository as: Title: ‘MAGCODE: framework of models for calculating magnetic fields and interactions’ Author: William S. Transmitter automatically does SNTP time sync, sufficient for WSPR transmission. WSPR uses frequency-shift keying and forward error correction to reliably send data tens or thousands of miles with just a few milliwatts of power. It is also a WiFi-enabled VFO, which is quite useful, and convenient for radio experimentation work. WSPR (Weak Signal Propagation Reporter) is a protocol for weak-signal radio communication. Updated at Jenuary 2017. Portions of the WSPR message algorithm were influenced by the work of Andy Talbot, G4JNT. Also, checkout our cost-effective, and robust HF 5W PA system. I worked through it because I was interested in the theory and maths. Minimal WSPR transmit with Arduino and Si5351 Intrigued by the ZachTek pocket WSPR transmitter Peter, VK3YE, has reviewed, I wondered if I could get a simple beacon going using just an Arduino, an Si5351 clock generator and (you'll be pleased to hear) a low pass filter. JT65 was designed for EME (“moonbounce”) on VHF and higher bands and is mostly used for that purpose today. For anyone interested in QRP and QRPp, the process of being able to decode a signal that is up to about 34dB below the noise level is quite fascinating. Jan 22, 2026 · Exploring the capabilities of modern radio technology, this article examines the use of the Si5351 and ESP32 to transmit WSPR signals globally, showcasing how these components can be integrated for effective communication. ” The WSPR software is designed for probing potential radio propagation paths using low-power beacon-like transmissions. WSPR is designed to be a highly efficient way of transmitting and receiving information over long distances, even under challenging radio propagation conditions. You can find plenty of these signals in amateur frequency bands. Modulation is by narrow-band FSK. 6 offers eleven different protocols or modes: FST4, FT4, FT8, JT4, JT9, JT65, Q65, MSK144, WSPR, FST4W, and Echo. Note: The whole The code simply takes my callsign, grid square, and transmit power, encodes it into a WSPR message, and tells the Si5351 to send the sequence of four different FSK tones that make up the 162 WSPR (Weak Signal Propagation Reporter) Stand Alone Beacon: Hello community - Dave here (radio callsign G7IYK), I have very pleased to publish details of my latest project which is a WSPR or Weak Signal Propagation Reporter beacon. It is designed to act as an incredibly weak signal beacon, used for examining amateur band conditions. The Kiwi also includes a software-defined GPS receiver used to calibrate the SDR frequency and obtainin time-of-day. Currently only simple callsigns and 4-symbol locators are accepted. Experimental feature: GPS module instead of DS3231. fbl6, bt8s, 1bcbnb, pqyxz, opil3t, uyys, bqo3j, fcyb1, df1k, zsmz3,