During the late 1960s and early 1970s the station aired a top 40 format under the callsign wtxl. Weak signal propagation reporting wspr with the limesdr. The program can decode signals with sn as low as 28 db in a 2500 hz bandwidth. Its used by radio enthusiasts to see what propagation conditions are like. Some of my more popular products are different models of wspr transmitters that is made for the radio amateur that wants a standalone transmitter for mobile or stationary use. Like so many other radio advances, this one is really helped by. The text includes instructions for configuring software programs for popular modes such as psk31, rtty, ft8 and jt65. Dec 11, 2014 wspr is an acronym for weak signal propagation reporter and is a software program and rf protocol designed for very weak signal radio communications between ham radio users. It enables your radio transceiver to transmit beacon signals, and to receive beacon signals from similarlyequipped stations in the same amateur band. With less than 5w of transmitting power, a wspr signal could potentially be copied all over the world.
With a bit of luck, it will motivate experimenters, teachers, and students to begin exploring the many facets of science and engineering touched upon here. By stana horzepa, wa1lou the tapr booth at the 1989. Other amateurs around the world have similar setups and use their rig and radio to listen for the wspr broadcasts and decode them. The software is open source, and the data collected are available to the. It can produce qrss, hell, wspr, opera and pi4 slowsignal modes anywhere from 2200m to 2m and even 222mhz bands.
Wspr 1490 am is a radio station licensed to serve west springfield, massachusetts. A video about a software tool for radio amateurs called wspr or weak signal propagation reporter which is commonly referred to as whisper. The groups seven faculty members and affiliated students work on all areas of cybersecurity, from designing new cryptographic constructs to ensure protected. The transceiver provides single band operation between 630 and 10 meters. Wsjtx is smart enough to not transmit on the wspr frequencies as long as you are using rig control so it knows where you are. Wsprs biggest selling point is you can do it on the cheap. Apr 22, 2018 many digital modes such as wspr and ft8 require reasonably price clocks which may be assisted by gps technology. Wspr amateur radio software wikimili, the best wikipedia. Although joe taylor launched wspr, it is now open source and is managed by a small team of radio amateurs. In fact the letters wspr stand for weak signal propagation reporter. Aug 08, 2011 the software tunes your rig to the appropriate frequency, then puts out a wspr broadcast, which includes your callsign, location and power.
Many digital modes such as wspr and ft8 require reasonably price clocks which may be assisted by gps technology. So join the group of whispering raspberries on 30 and 40 meters by ordering a tapr 30m or 40m wsprpi today. In this video i show how to get started using the wspr 2. The wspr laboratory pronounced whisper models, designs, builds, and validates technology that protects users, systems, and networks from malicious and privacyinfringing acts.
Like so many other radio advances, this one is really helped by the advent of inexpensive sdr receivers. An updated version of the controller used with the classie wspr transceiver is presented here because of my location, amateur radio operations are limited to low power and disadvantaged antennas. Verylowpower amateur radio stations mf 160 meters 1810 khz cw mf 160 meters 1818 khz cw. Using a software defined receiver with wsjtx download article. Wspr is a way of sending a tiny amount of data over huge distances using very little power. Jun 06, 2009 a video about a software tool for radio amateurs called wspr or weak signal propagation reporter which is commonly referred to as whisper. Normally, ordinary ssb radio transceivers are used to send and receive wspr signals using a sound card connection to a pc that is running wspr software. The si5351a synthesiser can also be used in the u3 kit, with firmware versions v3.
Wspr is an acronym for weak signal propagation reporter and is a software program and rf protocol designed for very weak signal radio communications between ham radio users. Dec 15, 2017 this software along with a web site wspr net plots all the radio signals heard by amateur radio operators from around the world. The program can decode signals with sn as low as 28 db in a 2500 hz. Searches for radio stations can be performed by location andor format.
The software to decode and the transmit software too is free and open source. Describe your experience with the qrp labs ultimate3 qrsswspr kit and tell us why you give it the rating you did required. Wspr is a software application which was created by joe taylor, k1jt, a nobel prizewinning princeton physicist who also developed another digital mode for amateur radio called wsjt. Software is now open source and is developed by a small team. Wspr implements a protocol designed for probing potential propagation paths with lowpower transmissions. It is used to broadcast a position, call sign, and power level and see who hears and decodes it. The program is designed for sending and receiving lowpower transmissions to test propagation paths on the mf and hf bands. In receive mode the sound card digitizes audio from the transceiver. An updated version of the controller used with the classie wspr transceiver is presented here. Wspr implements a protocol designed for probing potential propagation paths with lowpower. Hans g0upl observes that wspr does not require gps. Radio propagation studies using wspr gwyn griffiths 6. Welcome to zachtek, here you will find rf related products and information. Wspr whisper or weak signal propagation reporter software.
Like a normal transceiver psdr is set to wsprs dial frequency, the actual signals are 1. This is an updated version of the wspr audio signal source that includes onchip generation of wspr message and onthefly gps generation of grid square location for portable operation. A radio relay system for remote sensors in the antarctic. During the late 1960s and early 1970s the station aired a top 40 format under the callsign. Last night i managed to set a new distance record by hearing zs6bim in south africa, at a distance of 16,941km. With these in your shack you can run wspr 247 without tying up your regular transceiver.
Wspr or as it is pronounced, whisper is a software set that is used for weak signal communication between amateur radio stations. The ultimate3 qrsswspr transmitter kit transmits qrss, hell and wspr slow signal modes on any hf or mf band. It is a protocol, implemented in a computer program, used for weak signal radio communication between amateur radio operators. The second focus is an analysis of wspr transmissions on the 10mhz amateur radio band from dp0gvn located at germanys neumayer iii research station on the ekstrom ice shelf, at 70. Tapr now offers its popular raspberry pi qrp tx shield for wspr in three versions. You may watch the wspr results in real time at wsprnet wspr whisper or weak signal propagation reporter software dowloads for windows at wspr 2. Because of my location, amateur radio operations are limited to low power and disadvantaged antennas. The simplicity of the wspr receiver described here makes it attractive as a low cost radio propagation tool. Whisper wspr and other weak signal softwares gateway.
The weak signal propagation reporter network is a group of amateur radio operators. The wsjt project currently includes five programs designed for amateur radio communication using state of the art digital techniques. It is a protocol, implemented in a computer program, used for weaksignal radio. This software along with a web site wspr net plots all the radio signals heard by amateur radio operators from around the world. Although it was programmed very well, it never achieved rating success due to the heavy. Amateur radio operators use these designated bands of radio frequencies for noncommercial exchange of messages, wireless experimentation, selftraining, and emergency communications. Pronounced whisper, wspr was designed to map out radiofrequency propagation.
Programs written for wspr mode are designed for sending and receiving lowpower transmissions to test propagation paths on the mf, hf and recently, uhf bands. Wspr can be run in rx only mode, which is still very helpful as the wspr software will log all received signals to the online database, for everyone to see. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. Wspr implements a protocol designed for probing potent.
I believe this may be one of the first books to include discussions of ft8 and wspr operating for beginners, ford said. Click the search wsprnet button in the panel above or hit enterreturn. If the psdr display is set to waterfall it will look like wsprs display but in real time. Wspr is not a qso communicatewith mode, explains kempton park amateur radio technology societys stewart moss in an introductory paper. Youll also learn about other digital communication modes such as mfsk, olivia, pactor, and wspr. Welcome to the weak signal propagation reporter network. Jun 07, 2015 for the last couple of days, ive let my ft817 and the wspr software monitor 40m, 30m, and 20m shifted as time permits, and as propagation shifts. A classie wspr transceiver computerelectronics workbench. Software for amateur radio weaksignal communication.
Using just a receiver, teachers, students and shortwave listeners swls routinely report receptions. W3pm wspr transceiver gene marcus, w3pm gm4yre weak signal propagation reporter wspr is a program developed by joe taylor, k1jt that uses a computer sound card to generate audio tones to modulate an ssb transceiver operating on upper sideband. For issues with this site, email the wsprnet admin team or post to the site forum. Technical resources cherokee amateur radio society wx4car. Plugin lpf filters are available for all 16 hfmflfvhf bands from 2200m to 222mhz. Wspr pronounced whisper stands for weak signal propagation reporter. In the past, hes developed other transmissionreception methods to help with moonbounce and meteor scatter radio work. For the last couple of days, ive let my ft817 and the wspr software monitor 40m, 30m, and 20m shifted as time permits, and as propagation shifts. The station is owned by john fuller, through licensee red wolf broadcasting corporation.
Typical applications include meteor scatter, eme moonbounce, and qrp communication at hf. As a licensed amateur radio operator, you are permitted to transmit and receive radio signals on frequency bands allocated for use by amateur radio amateurs. The software tunes your rig to the appropriate frequency, then puts out a wspr broadcast, which includes your callsign, location and power. You may watch the wspr results in real time at wsprnet. It used a prebuilt ad9850 dds module the same as the u2 kit. We would like to show you a description here but the site wont allow us. May 12, 2015 the ultimate3 qrss wspr kit was produced from november 20 to december 2014. The protocol was designed, and a program written initially, by joe taylor, k1jt. Click radio station search to browse all of the commercial and noncommercial radio stations in your area, read descriptions of each stations music format or genre, and find phone numbers andor website address links for your all favorite radio stations. The ultimate3 qrsswspr kit was produced from november 20 to december 2014. Annoying delays accessing the database are caused by lockups at. Wspr is a piece of software that enables you to participate in a worldwide network of low power propagation beacons. Whilst joe, k1jt, has written a facility into the commandline software, wspr. The latest facet of this multifaceted hobby that has caught my interest is w.
Using f3k, i cannot get any decodes on the latest wspr software, the signals on wspr look ok and i also adjusted the receiver audio levels, not still no decodes. Products tapr tomorrows ham radio technology today. The night map overlay position can be set to the time of any spot. Like a normal transceiver psdr is set to wspr s dial frequency, the actual signals are 1. The program is designed for sending and receiving low. Normal transmissions carry a stations callsign, maidenhead grid locator, and transmitter power in dbm. Unlike normal amateur radio communication, wspr enables amateur radio stations to participate in a worldwide network of low power beacons. Wspr was produced by joe taylor, a ham operator k1jt and nobel physics prize winner. The kit is easy to build, with throughhole components only no surface mount soldering. Other amateurs around the world have similar setups and use their rig and radio to. The software is open source, and the data collected are available to the public through this site.
The raspberry pi generates the wspr signal in software and utilizes timing data from the internet to calibrate its internal clock and transmit frequency, so you dont have to do it. Actually, you dont always need a transceiver usually a receiver or transmitter will do. It is a protocol, implemented in a computer program, used for weaksignal radio communication between amateur radio operators. If you are a student at ncsu and are interested in cybersecurity research, look at the web pages of the wspr faculty and feel free to contact them directly. The wspr lab works to secure all types of computer systems, from legacy telephone networks to emerging technologies like smartphones and internet of things devices.
Wsprnet welcome to the weak signal propagation reporter. If the psdr display is set to waterfall it will look like wspr s display but in real time. Hams cook up every piece of gear from the antenna back, and in many ways, the homebrewers drive amateur radio technology and press the state of the art forward. The ultimate3s qrsswspr transmitter kit is the new edition of the third version in the ultimate qrsswspr kit trilogy.
619 1012 119 610 53 1233 634 291 210 261 95 949 39 586 1144 1587 397 519 1278 1418 628 821 368 754 218 1404 1328 1248 1569 1300 554 855 652 807 138 1171 241 345 1305 694 316