EME is a single letter O and nothing else than a single letter O. For example what is the equivalent in comparison to RST. Welcome to Reddit's own amateur (ham) radio club. This cookie, set by Microsoft, is used by the website to store the user's session ID and is sent with each request to the ASP.NET application. Until you're into the -20dBs you're being heard. Your transmit and receive capabilities are not that much different. In this case, the PC is generating a signal (usually RTTY or PSK), and the operator communicates with the correspondent using a kind of text chat. The FT8 digital mode that Joe, K1JT, and company rolled out a little over a year ago has become a game changer in ham radio. According to WSJT-X instructions you should tune up for maximun output then back off till the power output drops on you monitor. A computers onboard clock can be notorious for drifting off, and FT8 needs to transmit at very specific times to work. CleanTalk sets this cookie to complete an anti-spam solution and firewall for the website, preventing spam from appearing in comments and forms. Personally, I dont really understand the pleasure of almost completely automatic radio communications, but the FT8 is popular, so people use this. What are the frequencies? Norfolk Amateur Radio Club. To maximize the chances of success, each FT8 packet holds 13. The message length of 77 bits was chosen as a compromise between the transmission time (about 13 seconds, which is not so fast) and the information capacity the message could be made longer, but the transmit time should also be increased. Both are compromises, but my FT8 contacts in Antarctica, Fiji, Australia, NZ, Japan, etc don't know that. The decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, here the strength of a received signal. The radio also needs to be in DATA mode. If band is open pulls in FT8 quite well, forums.qrz.com/index.php?threads/the-skignal-reports.591508/. Yep I've been lucky enough to get Fiji x2 and Kenya in the past week or 2 so it's definitely working! When the audio is over-driven, that signal can take up many times more bandwidth than a properly modulated FT8 signal. FT4 is faster still (7.5 s T/R sequences) and especially well-suited for radio contesting. FT8 signal report Sent/Rcv consistent difference Display Reception Reports. I think this violates the Terms of Service. The test_cookie is set by doubleclick.net and is used to determine if the user's browser supports cookies. At this step, the message is converted to 00 00 00 23 44 4A 11 91 3F 8B 57 7E CF 78 77 39 55 DE 36 EF 01 48 data block. JS8Call turns FT8 into a "chat" mode, allowing stations . This mode allows communicating with a lower s/n ratio compared to PSK31 or RTTY. 3,298 Stations <0 698 Stations >0. . The cookies is used to store the user consent for the cookies in the category "Necessary". Despite this, according to the statistics, people definitely enjoy FT8 usage. 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. 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. On Tuesday, January 4, 2022, 07:13:50 AM CST, John wrote: On Tue, Jan 4, 2022 at 09:15 PM, Michael Black wrote: Suggest running at 50% duty cycle on the IC7610 for data. 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. I am running a full 100W into my radio. Very helpful. AH2R Team will be active from Guam Island, IOTA OC - 026, in ARRL DX SSB Contest, 4 - 5 March 2023. Please review the new, If you are having a problem, please refer to the. Conventions may change with time or by user preference; you can modify the frequency table as desired." The RST reporting system is represented in three numbers for CW and two numbers for Phone. As others have said, the signal reports are based on the signal-to-noise. It's main advantage is that it allows low-power stations with marginal Let's say I call CQ and a few stations respond, the first being pretty weak (call 1st enabled). They are negative numbers (unless you are running too much power; Is there too much power? A C++ version of the encoder can be viewed at http://github.com/kgoba/ft8_lib page, the above code snippets were taken from it. 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. SNR(dB) = 10*LOG[ Signal Power in watts / Noise Power in Watts] For loud signals you can roughly calculate SNR off the S-meter. The simple fact is that they probably have a better antenna than you and yes, they may be running more power, but that won't make too much difference. 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. 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. If band is open pulls in FT8 quite well The following user(s) said Thank You: M0ZAH This website uses cookies to improve your experience while you navigate through the website. In log 80k QSOs.Problems with low bands. fremont hospital deaths; what happened to tropical tidbits; chris herren speaking fee; boracay braids cultural appropriation; ft8 signal reports explained. The one on the right, being about 100Hz wide, is a second harmonic, and the one on the left, being about 150Hz wide, may be a third harmonic. Tail Ending QSO 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. I've been licensed long enough to know this, but I've only recently in the past couple of months started on FT-8. Forgot your password? Typically the interface will appear as a COM port and WSJTX will need to be set to the correct COM, PTT So that the PC can put the rig into Transmit, the software needs to know how to trigger Transmit. Many Thanks for the link James, explains it well, a useful chart that gives the scale. That is no effort to learn a code but able to work stuff you can't hear. Press question mark to learn the rest of the keyboard shortcuts. At the time of writing (Feb 2018), it appears to be the most popular for a number of reasons: As with modes such as JT65 and PSK31, you interface your HF rig to a computer, and send out text encoded by your computer over the amateur bands. So, its interesting to see the future evolution of the ham radio digital modes. The WSJT-X sources are written in Fortran, and understanding them is not so simple. Any suggestions on what the problem might be? What do all the characters mean? The exchange above would therefore take about 90 seconds (compared with seven minutes on JT65). signal reports when using FT8 and JT65. 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. Then, youll need some software. Nothing defaults to paragraph. How's the ALC meter looking, antenna gain or attenuation, RX bandwidth, etc. FT8 transmits this minimum of information in a semi-automated fashion on its own time frame. Welcome to the new FlexRadio Community! (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. Maybe invest in antenna & pre-amp. - Lucas / W6AER. These frequencies will appear in your drop-down band-selector list after you go to the Settings/Frequencies tab, right-click on the frequency table, and select Reset. I noticed for a while that I can hear better than I am being heard. This means your pre-amp is worse than theirs, or they're putting way more power into their antenna. This site uses cookies to enhance your browsing experience, serve personalised ads or content, and analyze our traffic. FT8 is four times faster (15-second T/R sequences) and less sensitive by a few dB. FT8 is a very popular protocol and continually growing. I am using Windows 10 with WSJT-X v2.5.3 with a USB connection to an iCom 7610 transceiver running 100w. Examples of non-digital reports would be: Each FT8 transmission can support up to 13 text characters, coded using forward error correction to ensure proper transmission and decoding despite common radio effects such as fading, interference or poor signal propagation conditions, or low power operation with compromised antennas in restricted urban spaces. I will be on 40 and 80 meter CW, both days. 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. JT65, JT9, FT8 SNR Explained. Show quoted text. +19 is about the best you should get, down to about -24dB. I can see on an external SWR meter that I am sending 100w. Please Log in or Create an account to join the conversation. They are a signal to noise representation. Easy doesn't equate with bad. On average I run about 30 watts only on this mode and have had some success on 70cms along with the other bands. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. All topics relating to the hobby are welcome here, from purchasing and building equipment, to operating techniques and activities, and everything in between. FT8: Saving Ham Radio Or Killing It? | Hackaday During contest and for DX Expeditions everyone is 59 for Phone (USB/LSB) ad 5NN for CW in order to expedite exchange. For details of this cookie, go to. GL, K7TRK. Therefore, FT8 is not a "keyboard-to-keyboard" (real-time chat) mode. The bandwidth is 50Hz. ft8 signal reports explained - esta-pasando.com Noticed that now when a QSO is logged, the upload to eQSL.cc no longer includes the signal reports added to the comment field of the eQSL record (like FT8 Sent: -19 Rcvd: -07). FT8 from Setup to DX W6AER- Pacifica, CA The other thing to keep in mind is that signal level is relative to the noise level around the signal. The data being gathered also includes more than just PSK spots, it include JT65 and FT8 -- with FT8 the overwhelming majority at the moment. Records the default button state of the corresponding category & the status of CCPA. On average I run about 30 watts only on this mode and have had some success on 70cms along with the other bands. This is measurable to some extent by the signal reports on FT8. The _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. Only thing I dont really understand is how the signal reporting works. "By default the [WSJT-X Software's] Working Frequencies table contains a list of frequencies conventionally used for modes FT8, JT4, JT9, JT65, MSK144, WSPR, and Echo. Hit tab to get into that menu. I don't run any preamp for FT8. I'm using a TS-590S for FT-8 on a MyAntennas 4010-1k EFHW that's around 35'. Remember this is a S/N report,not a power level report. All topics relating to the hobby are welcome here, from purchasing and building equipment, to operating techniques and activities, and everything in between. delphinium hybrid blue. Reddit and its partners use cookies and similar technologies to provide you with a better experience. WSJT-X This is the client that most people use for decoding 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. Practical Wireless - March 2023 | PDF | Software Defined Radio | Radio YouTube sets this cookie via embedded youtube-videos and registers anonymous statistical data. Tell us more about your antenna system - antenna, feedline, any transmatch needed, etc. UTC: When the signal was received, dB: Signal strength of the received signal in dB. During this step, we transform the message into a tones sequence of different frequencies. I primarily run FT8 at 30W into either a 135ft long end fed at about 40ft, or a vertical delta loop with apex around 40ft but base at 6ft. The chart above shows the agreed-on frequencies for FT8. Lots of variables here. In the first step, common abbreviations are replaced by shorter codes, for example, CQ gets a 02h code. Hello, after years of saying I would never work FT8 I have finally taken the plunge and having a play. As a result, our CQ DL1ABC JO62 message will be converted to data block 00 00 00 23 44 4A 11 91 3F 88. You know, I can play with my volume on my computer and get that +12 down to a -18 or lower. There is just a PC screen, and the rest is done by algorithms and mathematics. You all have seen it in social media and on the air. Now, with FT8, I have real comparisons and can surely see a 5 - 10 db difference for most contacts. FT8 - Wikipedia 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. If theres any interest, Im happy to expend this article, but hopefully this tells you what FT8 is all about, and gives you enough to get started. Overcrowding encourages some to turn on their amplifiers, which only makes things worse. People decoding you multiple times. Looking at your location and excellent installation, Id venture to say you have much better receive capabilities than most other stations. 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. They are using a directional antenna, and you are using an omnidirectional antenna. Importance of a Clean Digital Signal - OH8STN Ham Radio 23 dB Difference In Signal Reports WA9ONY 200 X Weaker Signal. Some operators do, some don't. FT8 and Ghost Decodes. Quantserve sets the mc cookie to anonymously track user behaviour on the website. Scorecard Research sets this cookie for browser behaviour research. How 2m EME signal reporting works - DXMAPS If the average recipient has a lot more noise than you, you will get a worse report on average. Radio operator "IZ1M" replies with his callsign and grid square locator. 4. I never run more than 5 watts and usually 1 watt or less. Is there a solution? The Group moderators are responsible for maintaining their community and can address these issues. FT8 Signal Reports - NARC Forum - Norfolkamateurradio.org Information exchanged in a minimal two-station contact typically consists of call signs, four-character Maidenhead locators, signal reports, and acknowledgments. Display Reception Reports - PskReporter 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). FT4 and FT8 are digital protocols designed for rapid and accurate communication between amateur radio stations, particularly in weak-signal conditions. Topics from Around the World / FT8 and its Decibels May.2021 - Monthly I consistently get low signal reports for FT8 contacts, typically 15db less than what I send as a received signal. Why are the signal reports negative numbers? On Tuesday, January 4, 2022, 04:32:27 AM CST, John wrote: On Tue, Jan 4, 2022 at 10:15 PM, Arnold Lausevich wrote: Do you mean 50% power? When I last had a play the lower the alc the smaller the spurs at each tone change. It does not store any personal data. These cookies track visitors across websites and collect information to provide customized ads. Therefore, the complete exchange (QSO) above would take about 105 seconds. PDF Tips for FT8 DXers - York Radio Club If you want to, fine, but absolutely not necessary to run 1 watt or less.lol.. IMHO your results are just fine. Online Investing Guide To buy more radios! New comments cannot be posted and votes cannot be cast. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. (references). Question about FT8 signal reports. : r/amateurradio - Reddit For details of this cookie, go to, Set by Google to distinguish users. As a result, the callsign DL1ABC will be written as 06 29 17 3B we use 4 bytes instead of 6. 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. I've seen the same, that outlier station with a good receive setup or just weird propagation magic that copies you +12 while everyone else in that grid is coping you -10. FT8 is a weak signal - not a low power mode (power works the really weak ones) FT8 lets you work DX on 6m when there would be none FT8 is suddenly dominating VHF/UHF contesting FT8 lets you work weak signal DX without proficient CW skills FT8 is like having constant DX beacons on every band 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. These cookies ensure basic functionalities and security features of the website, anonymously. The new topic will begin with this message. Different colors are different bands and minutes indicate the last time they heard and reported back automatically. Or,sometimes you could be overdriving and causing splatter due to distortion. Re: [CQ-Contest] Reciprocity in signal strength As with other data modes, youll need some kind of interface box to sit between the rig and your computer. With all features enabled, JTDX seems to decode more signals on a crowded band than WSJT-X. Operators may or may not be aware of the noise they're creating on the band's, but the result of that noise is is qrm for the others trying to operate on the same band . It's a really smart combination of bit optimization, mathematics and usability. A lot of people hate FT8. It contains a hashed/encrypted unique ID. Hertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). FT8 Digital Radio ProtocolHow Does it Work? - Medium I forgot how the software handles the ratio. FT8 is one of a group of Multiple Frequency-Shift Keying (MFSK) modes that include JT9, JT65 and MSK144 created by Joe Taylor, K1JT and co-developers. Share them in the comments below or email me at KE8FMJ@arrl.net. canadian space agency; outlander claire tells jamie the truth; kendra place apartments gallatin, tn YouTube sets this cookie to store the video preferences of the user using embedded YouTube video. Lets try to figure it out. Benjamin Kowalewicz Instagram; Amos And Andy Billiard Board For Sale; What Cat Should I Get Quiz Buzzfeed; Holographic Film Plates; Sports Flick Champions League 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. By . To enable reporting, you need to enter the following information into the settings or preferences . 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)). With the bonus of DAX not requiring A/D conversion and the attendant degradation of received signals, your great installation, radio, and location really do put you ahead of the average Joe. The majority of DX stations have voted in favor of it. That means that you need your clock to be accurate to the precise second. But yet, you can clearly hear the musical Frequency Shift Key (FSK) tones and watch the FSK tones rise . No, I can't confirm that, I only use FT8. If I ran the preamp on it would make the situation even worse. Here you will see that on my FT8 Transmit some decoded me as +13 and others closer as -3, this can be due to skip zones as well as different antenna setups, etc. ), or even compromised antennas. As you can see here, I decoded everything from -21 to +05 range on 80m using the WSJT-X Software. Antenna for 70cms is a 7 ele ZLspecial, fixed towards SE up at about 15 feet. The __qca cookie is associated with Quantcast. It is calculated as the ratio of signal power to the noise power. 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. Frequency modulation 8-FSK, tone space is 6.25Hz. Is there a setting that I am missing somewhere to fix this problem. There is no more attentive listening to the radio noise and fadings, getting a weak signal from the other side of the ocean. Here is the generally accepted System: Basic rule: Higher Numbers are always better. FT8 Signal Reports - NARC Forum No Membership Fees. A +12 signal does not say how much power a person is using. If I tighten the passband in HDSDR down to like 100hz around the signal of interest, there's virtually no other noise in the WSJT-X passband. Please leave your Call Sign if applicable. FT8 is designed to maximize communication even when signals are very weak (as low as -24dB). It is popular among amateur radio operators for its ability to send signals despite challenging propagation conditions, high noise environments, low power operations (QRPIn amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range.