136 khz wspr software

Js8 is an amateur radio qso communication protocol based on ft8 that allows keyboardtokeyboard communication. Time synchronisation the hardware has been completed, the wspr software is running on the pc. Wspr messages can be decoded correctly at snr levels down to 29 db at 2. Wsq zl2afp, dl4yhf wsq2 receiving and transmitting software. Note that the recommended wspr15 subband is a 25 hz slice just above the 200hz wspr2 subband, i. But, i have a beaglebone for another project and it. Download wspr software for windows free at k1jts wspr download site. Although it can be used on fm and uhf, its primarily a tool thats used for hf, with most of the activity on the 40 metre and 20 metre hf bands. Hams use wspr by putting very low power beacons on the air. Programme 1, mainly in english is on ddk 2 4583 khz, ddh 7 7646 khz and ddk 9 10100,8 khz. When a wspr beacon sequence starts o n an even utc minute, the transmitter turns on and uses continuousphase, fsk4 4level frequency shift keying. Ive been hearing these strange signals on 40 meter phone band around 7. My antenna is a converted 80m dipole at 25 feet with a length of 7 feet and i am using a wa3etd converter attached to my ts440s driving it from wsjtx software on a windows xp machine. Wspr usually pronounced whisper is a software application that uses the transmission mode meptjt manned experimental propagation transmitter joe taylor.

In using this, the only thing that is done is the phonetablet. Whisper wspr and other weak signal softwares gateway. I installed some digital sound card software on my pc a few weeks. The si5351a synthesiser module kit can be used with the u3s kit to get 0hz drift reports on 10m wspr, even without the ocxo, by using a heatsink on the crystal. Next day, found an email complaining that im exactly in the wspr bandpass. Transatlantic path opens on 2200m 6 khz by g0luj posted on october 15, 2018 october 15, 2018 four wspr transmissions from n1bug were decoded early this morning, using the wellbrook loop and kiwisdr receiver. The main subject will be transmitting antennas for 6khz as this often is the most important part of a longwave amateur radio station. The power radiated by any antenna is determined by 3 factors. It happened during the day, so its straight groundwave propagation. Wspr whisper or weak signal propagation reporter software. But, in may 2001, i started wondering whether the 6 khz band would be suitable for qrp operation i.

Wspr pronounced whisper stands for weak signal propagation reporter. The 6 khz amateur radio band has only been available for radio amateurs in the past few years. Standalone operation, pc required for configuration but not for operation. The utility will generate either conventional callsign4 digit locator or compound callsign6 digit locator data. Normal transmissions carry a stations callsign, maidenhead grid locator, and transmitter power in dbm. Lpf are available for all bands from 6 khz to 50 mhz. A discussion of the wsprx program may be found at k1jts site. The protocol was designed, and a program written initially, by joe taylor, k1jt. My 1 w audio amplifier taken from a cheap pc speaker set has been heard about 150 km away from my qth.

Wspr symbol generation utility for compound callsigns with 6 digit locator this is a selfcontained utility that, in one go, will generate a text file for use with pic assemblers. Many ham transceivers and most general coverage receivers can receive below 500 khz. Wspr propagation reports are useful in checking ionospheric activity. The wsjt suite includes other well known programs such as jt65 and jt9. For transmission on a variety of hf bands 25, based on model and userchoice.

You may watch the wspr results in real time at wsprnet. This results in software control of the brightness, as achieved by this u3 modification. About joe taylor, k1jt joe taylor wrote the software for wspr. Qrss amateur vlf operating mode category is a curation of 25 web resources on, i2ndt qrss listenings, rete qrssqrpp a 28. Wspr k1jt wspr receiving and transmitting software. It communicates with the wspr transmitters using a serial port and a set of commands. The pc software runs on pc with windows and can configure and control all three models.

The wspr desktop transmitter is a standalone multiband wspr transmitter with built in gps for the radio amateurexperimenter. Using wspr on microsoft windows xp, vista, or windows 7. The complete guide to weak signal propagation reporter. This is the tx freq logic, using a 27mhz cb xtal and dividers to generate the 6 khz. It is currently in beta and gets updates regally, it is pretty stable but has some little quirks and needs a bit more polish before i call it version 1. The si5351a synthesiser can also be used in the u3 kit, with firmware versions v3. The advertised specs from the afedri laniq website are pasted below. Wspr propagation beacons use very, very slow frequency shift. The marathonfive a low power transmitter for 6 khz by gw4alg as is common on lf, i usually run qro on 6 khz 400 watts. Hams transmit these beacons on regular frequencies from dc to daylight, from 6 khz to 1. In mept transmissions, the radio becomes a beacon that transmits for just under 2 minutes, transmitting callsign, locator and power information.

The aim of the transmitting antenna is to radiate the power coming from the transmitter. The software is open source, and the data collected are available to the public through this site. I operate on 40 meters quite a bit of the time in my mobile as well as at home. Nov 27, 2019 i fired it up on the 2200 meter band last night at 6 khz using wspr. Instead of the original 2 minute decoding periods, the time is now stretched to 15 minutes. Narrower bandwidths are perfectly acceptable if you have problems with strong signals well outside the 200 hz wspr passband.

Although joe taylor launched wspr, it is now open source and is managed by a small team of radio amateurs. Most ham radio software for digital modes shows signals in the entire passband sent by the radio, typically 2. The software contains a detailed manual with much more information than here on this website and that also describes the wspr signal in detail. Wspr relies upon received signals reported to a central server to populate the map and those received signals are sent via the internet to a server. This is a great piece of software that can be used to check how far out your signal can carry. Programme 2, mainly in german, on ddh 47 147,3 khz, ddh 9 11039khz s and. Practical wireless sota vhf weekend 2325 august 2014 just a quick reminder that next weekend is the august bank holiday weekend and practical wireless are encouraging vhfuhf operators to operate from summits on the air on. It used a prebuilt ad9850 dds module the same as the u2 kit. Us hams dont have 6 khz or 470 khz allocations, so if the duino doesnt work on 160m, its a no go. Wspr implements a protocol designed for probing potential propagation paths with lowpower transmissions. We are secondary users of the 30 meter bandthe following information is not official, but based on observations from internet sources and those active on 30 meter band. Wspr short for weak signal propagation reporter is an amateur radio beacon protocol. Depending on how many outputs used the pulse width can also be controlled.

It is amazing the distances achievable on these so called low bands and you will be too if you give it a try. Wspr will then report the correct frequency of stations spotted. I am quite excited by the latest wspr result from my 6 khz beacon. The process of assembling the lpf is very easy, the circuit is standard and simply requires different values of capacitor or inductor to achieve the correct roll off characteristics. This is a stock standard tda1517 based amplifier, which only a 4 to 50 ohm impedance. Welcome to the weak signal propagation reporter network. There are some special modes, such as 7bd100hz for 6 and 502khz and 80m for some reason, plus an eme mode for use on 2m and some other bands, for weak signal work as it has, in theory at least, the capability to decode signals that have a signal to noise ratio snr of 35db, which is even lower than wspr. As i also enjoy wspr, i am wondering what would be the best solution for going homebrew on this band.

The 6khz bandwagon european administrations that have authorized operation at 6 khz seem to be adhering to the ceptrecommended allocation of 5. Wspr on 6 khz i am quite excited by the latest wspr result from my 6 khz beacon. Mar 21, 20 us hams dont have 6 khz or 470 khz allocations, so if the duino doesnt work on 160m, its a no go. Software is now open source and is developed by a small team. Canadians have now been granted use of the 6 khz band. 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. Another problem is that you will report your dial frequency to the activity page if nobody is spotting your signal. I fired it up on the 2200 meter band last night at 6 khz using wspr. He is a very clever and, by all accounts, very decent person too, i see he is a quaker.

It is a protocol, implemented in a computer program, used for weak signal radio communication between amateur radio operators. With more countries releasing the band for ham radio use the level of activity is beginning to rise. During last saturday nights spring stew, i thought 1836. The main intended application for wspr15 is for very difficult paths at 7 khz and the new 472 khz band. The if can be fed into a sound card and further processed in software for example in spectrum lab to get a waterfall spectrum plot, receive cw by ear etc.

There is no particular advantage in using a bandwidth as small as 200 hz, however, since wspr does all necessary narrowband filtering in software. The scale in wspr will be incorrect showing 200hz lower but this is a visual defect. Wspr is part of the wsjt software suite for weak signal modes developed by nobel prize laureate dr. Power output is lower than with the dds but can be restored. Besides amateur activity on 472 khz and 7 khz theres many interesting signals at. Both transmitting and receiving wspr rely on accurate timing better than 1 second, so ensure that your computer clock is properly synchronized. It is a protocol, implemented in a computer program, used for weaksignal radio communication between amateur radio operators. Using software available free from joe taylor k1jt. The radiation resistance of the antenna the antenna current. For wspr reception the local oscillator is tuned to 108. I checked and noticeded that there are only about 4 stations beaconing on 7 khz wspr. Welcome to the weak signal propagation reporter network wspr.

In view of its place at the very low end of the frequency spectrum, the 6 khz allocation presents a unique challenge both in terms of operating. It may be interesting to try on 160 meters, as well. This software runs on a raspberry pi which has an rtlsdr dongle and antenna attached and the dump1090 software running. Wspr weak signal propagation reporter wspr usually pronounced whisper is a software application that uses the transmission mode meptjt manned experimental propagation transmitter joe taylor. But, i have a beaglebone for another project and it will likely do the 70 cm band. A very simple receiver for 6khz this project is a very simple receiver for the 6khz band, with an 12khz if. I have seen many qrpp cw ccts, but i am intersted in running wspr, so modulating the signal is required.