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By far the most useful weirdness is to shift-click on the waterfall to put your TX signal there (think of it as shift my TX). Special message The signal report in 2m. We are trying to coordinate the suggested frequencies in WSJT-X with updated band plans being considered by IARU, ARRL, and other amateur radio societies. Consider a practical example the transmission of the phrase CQ DL1ABC JO62. Set by the GDPR Cookie Consent plugin, this cookie is used to record the user consent for the cookies in the "Advertisement" category . CleanTalk sets this cookie to prevent spam on the site's comments/forms, and to act as a complete anti-spam solution and firewall for the site. Most likely your noise level is much lower than the station(s) you are working but I have also noticed a difference in the reports I give out depending which radio/AGC setting I am using. ), QSO-only communication protocol used by amateur radio ("ham radio") operators. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key. But does everyone understand the nuances? https://physics.princeton.edu/pulsar/K1JT/wsjtx.html WSJT downloads for all platformshttps://physics.princeton.edu/pulsar/K1JT/devel.html WSJT-X source codehttps://github.com/kgoba/ft8_lib FT8 encoderhttp://laarc.weebly.com/uploads/7/3/2/9/73292865/ft8syncv8.pdf Synchronization in FT8https://en.wikipedia.org/wiki/Low-density_parity-check_code LDPC code, Coding, Tutorials, News, UX, UI and much more related to development, Python/IoT developer and data engineer, data science and electronics enthusiast, https://physics.princeton.edu/pulsar/K1JT/wsjtx.html, https://physics.princeton.edu/pulsar/K1JT/devel.html, http://laarc.weebly.com/uploads/7/3/2/9/73292865/ft8syncv8.pdf, https://en.wikipedia.org/wiki/Low-density_parity-check_code. SNR measurements in this range imply the received signal power level is below the received noise floor. FT8 uses 8-GFSKGaussian Frequency-Shift Keying modulation, includes forward error correction (FECForward Error Correction), and has an effective data rate of 5 words per minute. I've contacted 2 people in the same city before one after another. It's not a measure of your output. Norfolk Amateur Radio Club. It's not a measure of your output. A 14-bit CRC will also be added. Transmissions occur in 12.6s intervals (within the 15s transmit cycle window) until an entire message has completed transmitting. The cookie is used to store the user consent for the cookies in the category "Other. Are you sure you wish to repost this message? The cookie is used to store the user consent for the cookies in the category "Analytics". I feed the IQ output of my 7610 into HDSDR and then feed the audio out of HDSDR into WSJT-X through a virtual audio feed. Finally, after the conversion, we get a sequence of the form 31406520 00000001 04531130 52105775 34623140 65267442 47514714 36372416 64750133 3140652 where each digit represents a tone number from 0 to 7. The RST reporting system is represented in three numbers for CW and two numbers for Phone. timeout for worked markers. On a trial basis, and in response to numerous suggestions from around the world, we have added a second set of suggested dial frequencies for FT8 on three HF bands and also on 6 meters. I wonder if raising the far end up any more would help? +19 is about the best you should get, down to about -24dB. Here is the generally accepted System: Basic rule: Higher Numbers are always better. Please Log in or Create an account to join the conversation. People decoding you multiple times. Create an account. . The chart above shows the agreed-on frequencies for FT8. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Cleantalk set this cookie to detect spam and improve the website's security. Frequencies for JS8Call and FT8 are adjustable by the user. The amount that are running amps at high power may just surprise you. Signal reports for FT-8 can vary by 10dB or more between cycles due to fading and changing polarization. On average I run about 30 watts only on this mode and have had some success on 70cms along with the other bands. After a strong storm, the 80m vertical fallen. YouTube sets this cookie to store the video preferences of the user using embedded YouTube video. For more information regarding our Covid policies, please visit vintage faucet handles Why are the signal reports negative numbers? I got a + signal report back from one and a -18 or so back from the other. Both are compromises, but my FT8 contacts in Antarctica, Fiji, Australia, NZ, Japan, etc don't know that. I've been licensed long enough to know this, but I've only recently in the past couple of months started on FT-8. Welcome to Reddit's own amateur (ham) radio club. I've seen variations of that kind coming from the same. You can also setup your WSJT-X and other digital software to send reports back so you can analyze your own receives over a period of time or assist others in analyzing propagation. It's a really smart combination of bit optimization, mathematics and usability. Overcrowding encourages some to turn on their amplifiers, which only makes things worse. Create an account. Reddit and its partners use cookies and similar technologies to provide you with a better experience. CleanTalk sets this cookie to complete an anti-spam solution and firewall for the website, preventing spam from appearing in comments and forms. Its significantly faster than the similar JT-65, It works very well even with a lot of noise, Its popular, so theres lots of activity, Its semi-automated, making for easy contacts, Its a great way of racking up the countries youve worked, without too much hassle, Getting the audio connected. I always thought, its likely because of a quiet location, a good radio (6600M) and maybe others running more power. Donation will show as going to SFBA Tech, this is normal, under the same paypal account. Display Reception Reports. Basically anything can be proven and figured out,, but the variables are enormous.. the QSO record in ACL log does contain the signal report . This page was last modified on 14 April 2021, at 21:03. Any suggestions on what the problem might be? Forgot your password? The __qca cookie is associated with Quantcast. The message length is 15s, and messages are transmitted via fixed time slots, which makes decoding easier. For details of this cookie, go to, Installed by Google Analytics, _gid cookie stores information on how visitors use a website, while also creating an analytics report of the website's performance. There is no more attentive listening to the radio noise and fadings, getting a weak signal from the other side of the ocean. Tail Ending QSO Good luck! JS8, a variant of FT8, can send full conversations and relay messages, CQ call from radio operator "KI7PO" along with his. Similarly, the JO62 grid-locator is written as a 2-byte number 44 FE 50% save of the data size, compared to the standard ASCII string. My antenna is a horrible piece of wire, their antenna is a multi-element yagi on a tower as high as the Babel one, but sometimes this work, take this one with Croatia, 1300km distance on 6m: What you have are good signal reports, I wouldn't change much. (Sources: WSJT-X 2.1.0 Program default settings, DXZone, WSJT-X Documentation, JS8Call Documentation). As you can see here, I decoded everything from -21 to +05 range on 80m using the WSJT-X Software. Buddy WB4OMG. As with other data modes, youll need some kind of interface box to sit between the rig and your computer. transmitters. Special data for synchronization (7x7 Costas Array) is also added, it requires for proper signal decoding. FT8 transmits and receives only the bare essentials needed to make an amateur radio contact (QSO): Exhange of callsigns, readability report, signal strength report, and "best regards" ("73"). The other thing to keep in mind is that signal level is relative to the noise level around the signal. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. Now, with FT8, I have real comparisons and can surely see a 5 - 10 db difference for most contacts. It's a good way to check the quality of your radio setup, and the radio propagation properties that depend on how grumpy the ionosphere is at the moment. Different colors are different bands and minutes indicate the last time they heard and reported back automatically. GL, K7TRK. Rules don't say anything about Grid Squares or FT8 signal reports. Welcome to JS8Call JS8Call is software using the JS8 Digital Mode providing weak signal keyboard to keyboard messaging to Amateur Radio Operators. FT8 handles very weak signals very well, meaning that a Foundation licence holder with just 10 watts should be able to make some impressive contacts with a modest antenna - something not possible with voice or some other data modes. shift/alt/control keys and clicks are handily explained on the screen by pressing F5 to ^Display special mouse commands _ (commands for special mice): 3. You also have the option to opt-out of these cookies. Typically means connecting leads to the soundcard, or using a soundcard built in to the interface then setting up software to use the right speaker and mic settings for sending and receiving on the WSJT-X app, Radio interface settings Most common models of radio already have their comms settings built-in to WSJT-X, so its a case of selecting from a list of radios, Connecting to the radios CAT/DATA port for controlling the radio. (Serial number sequencing for DX op's could be a challenge for those op's) The typical JT / FT8 signal report data would interchange nicely instead of RS (T) without any modifications. If I ran the preamp on it would make the situation even worse. Now, with FT8, I have real comparisons and can surely see a 5 - 10 db difference for most contacts. I've contacted 2 people in the same city before one after another. Despite this, according to the statistics, people definitely enjoy FT8 usage. Alternatively, you can add the new FT8 frequencies manually. Common to receive say a European station after their dusk but nothing you can do to make them hear you. ft8 signal reports explained 97867 74664 head gravity tour string pattern Facebook south tyneside council white goods Twitter best chicken parm near me Youtube. If this is the case, then you probably have signal distortion in audio output. Nothing defaults to paragraph. They are a signal to noise representation. Hertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). It is calculated as the ratio of signal power to the noise power. On Tuesday, January 4, 2022, 08:25:36 AM CST, Chris VE3NRT wrote: "The cycle of operation of a machine or other device which operates intermittently rather than continuously. Splattering shows up as an extra wide signal on the receiving waterfall. Pending some tweaking and other optimizations I've a version running using the library right out of the air, receiver SDR is a rtl-sdr dongle. Here is what FT8 signals looks like, displayed in the WSJT-X waterfall view: Youll see from the above waterfall screenshot that there are over a dozen QSOs visible these are all taking place on a single frequency of 14.074MHz. To enable reporting, you need to enter the following information into the settings or preferences . Of course, before the mass appearance of personal computers in homes, probably no radio amateurs were thinking about transmitting and decoding digital data. The Group moderators are responsible for maintaining their community and can address these issues. A FT8 contact would be quite an undertaking. Show quoted text. First off, you need to connect your PC to your HF rig. The domain of this cookie is owned by Ebay. This is measurable to some extent by the signal reports on FT8. https://www.sigidwiki.com/index.php?title=FT8&oldid=20766, 3.573 MHz,7.074 MHz,10.136 MHz,14.074 MHz,24.915 MHz,50.323 MHz,70.1 MHz,144.174 MHz,1.84 MHz,18.1 MHz,21.074 MHz,28.074 MHz,50.313 MHz, FT8 is an extremely-weak-signal amateur radio mode that transmits very limited communications. Having the sequence shown above, we can easily generate a WAV file or directly control the frequency synthesizer in the case of an autonomous beacon. Increasing FT8 usage on the popular bands 40, 30, and 20m means that the default 3 kHz sub-bands are often wall-to-wall with signals. nanninga campground alberta. Image source: https://www.amateurradio.com/over-2000-miles-on-80m-with-the-warbler/ (2010). FT8 is Weak Signal Mode FT8 80m Log. SNR is expressed in dB (decibles). Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. On average I run about 30 watts only on this mode and have had some success on 70cms along with the other bands. Does anyone use a retevis rt95 I tried to join the Monday night net with my Get your Foundation Licence from home (click here), GB1BEL: JOTA 2022, Belchamps Activity Centre, Results from Watson Magitenna installed in loft, G0QQQ confirms signal report & replies with his own report. Best advice I can offer, is check pskreporter. Please review the new, If you are having a problem, please refer to the. If band is open pulls in FT8 quite well The following user(s) said Thank You: M0ZAH ie you transmit a 50Hz wide ft8 @ 500 and there will be a 100Hz wide image @ 1000 and a 150Hz wide image @ 1500 and a 200Hz wide image @ 2000 and so on. A good test bed is WSPR. Google DoubleClick IDE cookies are used to store information about how the user uses the website to present them with relevant ads and according to the user profile. I am running a full 100W into my radio. So, its interesting to see the future evolution of the ham radio digital modes. CleanTalk sets this cookie to store dynamic variables from the browser. On Tue, Jan 4, 2022 at 07:19 PM, neil_zampella wrote: its key down on the carrier how is that 50%? Some of these I see the images spaced at twice their mains power frequency. It includes integration with PSK reporter. And strangely enough, this had its advantages the operator himself had to find the right frequency, evaluate the signal quality by ear, see the decoded characters on the screen, type the answer, and so on. Necessary cookies are absolutely essential for the website to function properly. An inline formatting menu will show up when you select text. There are 4 slots per minute, and you transmit for one 15 second block, then listen for replies for 15 seconds, and transmit again for 15 seconds. Do not assume that many folks are running 100 watts or less. Quantserve sets the mc cookie to anonymously track user behaviour on the website. A +12 signal at times says more about the other persons low noise floor than whether you maybe a strong signal. If you're getting a +5 SNR report then obviously dial it way back but when I do DX at 100 Watts it's usually -10 or less. As we can see, FT8 is quite an interesting protocol. It's a shame that most people don't understand that FT8 is designed for weak signal communication. I noticed for a while that I can hear better than I am being heard. So with these parameters in mind, I've noticed the majority of time I've operated FT-8, my sent signal reports are almost always higher than my reception reports. Conventions may change with time or by user preference; you can modify the frequency table as desired." You are just very strong. I slide it down until my TS-590s ALC meter shows nothing. The following equations explain why FT8 signals start decoding at -26dB and everything else is below the noise floor: SNRFSKFT8 = SNRreportedFT8 + (10 x LOG (2500 Hz/6.250 Hz)), SNRFSKFT8= SNRreportedFT8 + (10 x LOG (400)). AH2R Team will be active from Guam Island, IOTA OC - 026, in ARRL DX SSB Contest, 4 - 5 March 2023. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. JS8 is a variant of FT8 which allows operators to send more information and converse with each other. I can see on an external SWR meter that I am sending 100w. Both FT8 and JS8 are heavily dependent on an accurate computer clock, since the modes send/receive information in a recurring, automated, 15s transmit/receive cycle. ft8 signal reports explained. Also, JTDX, which many of us use because it often decodes weak signals that WSJT-X misses, uses a different algorithm for computing that report (usually many dB lower). Or you have a very quit location! ), or even compromised antennas. No, I have just as much noise here as most others living in suburbia. Here's the actual math behind the signal report if you want to deep dive into the concept: The noise floor is relative to the receiving station, however. A popular mode is FT8. Scorecard Research sets this cookie for browser behaviour research. I think this message isn't appropriate for our group. All topics relating to the hobby are welcome here, from purchasing and building equipment, to operating techniques and activities, and everything in between. If a received CW signal is S9 and the meter reads S7 without a signal, the SNR is 12dB (normally each S-unit is 6dB). I always thought, its likely because of a quiet location, a good radio (6600M) and maybe others running more power. You know, I can play with my volume on my computer and get that +12 down to a -18 or lower. On Tue, Jan 4, 2022 at 7:15 AM John wrote: Are you sure you wish to delete this message from the message archives of main@WSJTX.groups.io? This ham radio digital mode appeared in 2017, and since then its popularity has only been growing. You can also use the excellent online PSK Reporter website to see where your FT8 CQ calls are reaching, as seen in this screenshot: This isnt a full how to guide on setting up FT8, as there are plenty of those online already. The new topic will begin with this message. The interface will need to connect into the PCs soundcard (for audio) and typically USB for controlling the radio. But since you are new at it, I'd start with the radio settings. The data being gathered also includes more than just PSK spots, it include JT65 and FT8 -- with FT8 the overwhelming majority at the moment. New comments cannot be posted and votes cannot be cast. Tell us more about your antenna system - antenna, feedline, any transmatch needed, etc. FT8 is designed to maximize communication even when signals are very weak (as low as -24dB). A cookie set by YouTube to measure bandwidth that determines whether the user gets the new or old player interface. What sort of AGC are you using? reading instead of in a more conventional, though more subjective, rstS reading), (This can also be shortened to "RR73" indicating, "Report Received 73," which would be a completed QSO), (not used if KI7PO's third transmission was "RR73"), Operators will transmit one message within a 15 second time-frame, then wait for another 15 seconds to receive any incoming replies (then transmit again, then wait again, in a cycle that exchanges messages until the conversation is completed). NP4Z Team will be active from Puerto Rico, IOTA NA - 099 in ARRL DX SSB Contest, 4 - 5 March 2023. FT8 isn't a QRP mode. Until you're into the -20dBs you're being heard. I would think that is more than enough to get a decent signal report. There are several types of interface available, depending on your rig. We also use third-party cookies that help us analyze and understand how you use this website. This is just a summary of thebasics, plus a few tips Ive picked up along the way. Some use the S-Meter on their radios to give the reading, which is fine if it is accurate (it is notusually as there are many factors) or by ear which frankly is a better way to go about it. It's in fact often practically unattended. Or,sometimes you could be overdriving and causing splatter due to distortion. Many ops can compensate with more power, but the problem with that is you quickly exceed your receive capabilities - people can hear you but you cant hear them. Your antennas ability to direct that transmit power at the receiving station and. Forgot your password? How's the ALC meter looking, antenna gain or attenuation, RX bandwidth, etc. Share them in the comments below or email me at KE8FMJ@arrl.net. 4. However, in a VHF+ contest, WSJT-X Auto-Sequencing will fail to exchange the required information for a complete QSO if one station is configured to use Contest Mode and the other is not. Personally, I dont really understand the pleasure of almost completely automatic radio communications, but the FT8 is popular, so people use this. Contrary to a lot of angry comments, the stations running high power and getting +10 reports are actually only an S6 above the noise floor. Information exchanged in a minimal two-station contact typically consists of call signs, four-character Maidenhead locators, signal reports, and acknowledgments. Automatic miles km. toggle quoted message Show quoted text Heres what Im using: As with all data modes software, setup requires some setting up, notably: Your computers clock does have to be spot on with FT8. If you are wondering what Amateur Radio is about, it's basically a two way radio service where licensed operators throughout the world experiment and communicate with each other on frequencies reserved for license holders. Other amateur radio operators herald the mode as a boon to the hobby of amateur radio during times when the solar cycle is at a minimum and when radio propagation conditions are poor. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Good sensitivity allows using of FT8 with compact or even balcony antennas. FT8 transmits this minimum of information in a semi-automated fashion on its own time frame. This cookie can only be read from the domain they are set on and will not track any data while browsing through other sites. A WSJT-X application screenshot in FT8 mode looks like this: Source: 3fs.net.au/ft8-digital-amateur-radio. The numbers tell you the strength of your FSK signal (6.25 Hz) as it compares to the signals in an entire 2.5 kHz SSB bandwidth. Freq: Frequency (Hz) of the received signal, Message Meaning, CQ KE8FMJ EM89 CQ call from KE8FMJ, KE8FMJ N8DXE EN91 N8DXE replies with location, N8DXE KE8FMJ-10 KE8FMJ responds with a signal report, KE8FMJ N8DXE R-09 N8DXE replies with own report, N8DXE KE8FMJ RR73 KE8FMJ says Report Received and Best Regards***, KE8FMJ N8DXE 73 N8DXE says Best Regards.