Or you have a very quit location! 4. UTC: When the signal was received, dB: Signal strength of the received signal in dB. All topics relating to the hobby are welcome here, from purchasing and building equipment, to operating techniques and activities, and everything in between. Now, with FT8, I have real comparisons and can surely see a 5 - 10 db difference for most contacts. FT8 - The Basics Explained - XE1E RADIO BLOG At first, just a fun fact. 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. Some of these I see the images spaced at twice their mains power frequency. Because only this information can be sent, FT8 is not a "conversation" mode. 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). If you find something incorrect, have an update, or if there is something you would like to see added to the site, drop me a line here. This is most easlly done by the PWR Slider. For details of this cookie, go to. Are you sure you wish to repost this message? JS8 is a variant of FT8 which allows operators to send more information and converse with each other. It's in fact often practically unattended. Professor Steven Franke and astrophysicist and Nobel laureate Joseph Taylor, have created a fascinating and efficient protocol for data transfer. Hit tab to get into that menu. I noticed for a while that I can hear better than I am being heard. In the first step, common abbreviations are replaced by shorter codes, for example, CQ gets a 02h code. I do and I encourage you to do so as well. ft8 signal reports explained The only time I bump up to full power is if there's been QSB and the other station isn't copying my "RR73". It will gain acceptance in SOTA too. 1 week 2 weeks 1 month 2 months 3 months 6 months 1 year no. YouTube sets this cookie via embedded youtube-videos and registers anonymous statistical data. If band is open pulls in FT8 quite well The following user(s) said Thank You: M0ZAH Even if you don't get a response to your CQ, there are plenty of stations monitoring and reporting to the site, and you can see exactly where you are being heard, and how well you are being heard. So, the signal reports dont make any sense. From a psychological point of view, the FT8 mode is also interesting to analyze. ft8 signal reports explained - parama-dailininkams.lt By . Display Reception Reports - PskReporter 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. Share them in the comments below or email me at KE8FMJ@arrl.net. ft8 signal reports explained FT8 decoding Issue #3 kgoba/ft8_lib GitHub A WSJT-X application screenshot in FT8 mode looks like this: Source: 3fs.net.au/ft8-digital-amateur-radio. *** As an alternate, sometimes you will see: N8DXE KE8FMJ RRR KE8FMJ says Report Received, KE8FMJ N8DXE 73 N8DXE says Best Regards, N8DXE KE8FMJ 73 KE8FMJ says Best Regards. Hello, after years of saying I would never work FT8 I have finally taken the plunge and having a play. 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. Automatic miles km. The new topic will begin with this message. The idea of replacing characters with indexes is important here, which is effective when using a small dictionary size. CleanTalk sets this cookie to complete an anti-spam solution and firewall for the website, preventing spam from appearing in comments and forms. How 2m EME signal reporting works - DXMAPS CleanTalkUsed to prevent spam on our comments and forms and acts as a complete anti-spam solution and firewall for this site. It works only in coordination with the primary cookie. Image provided by ANgazu. On average I run about 30 watts only on this mode and have had some success on 70cms along with the other bands. 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. Different colors are different bands and minutes indicate the last time they heard and reported back automatically. 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. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. Forgot your username? Here CQ is the calling code, DL1ABC is a callsign, and JO62 is the grid locator. Some modes, such as JT65, JT9, FT4 and FT8, for example, use a dB system but more about these later. On average I run about 30 watts only on this mode and have had some success on 70cms along with the other bands. 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. For details of this cookie, go to. The fact that they align properly to the FT8 15-second period, and have 8 tones (the same as FT8) is a sign that these may be distorted FT8 signals, caused by AF harmonics in the transmitter or the receiver. I think this violates the Terms of Service. Hacking my Newair Humidor For Cigar Smokers, GOES Geosynchronous Weather Satellite Receiver, Building the SteppIR BigIR Mark IV Vertical Antenna, Configuring WSJT-X for W6TI (or other) Special Event Station Use, Automatic Transverter Selector for FlexRadio, Setting up GOES Weather Satellite Receiver on the Raspberry Pi, Setting up NOAA Weather Satellite Receiver on the Raspberry Pi, Getting Started with Ham Radio Award Hunting, 3B7M Saint Brandon Islands. ft8 signal reports explained If nothing else sticks from these Hinson tips, at least remember to shift-click. 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"). DT: Calculated offset of the received signal from your local clock Values above .3 are not optimal. Wondering if I can get some clarification. ), or even compromised antennas. I will be starting a donor thank you page soon so please indicate if you wish to be not listed. YSC cookie is set by Youtube and is used to track the views of embedded videos on Youtube pages. timeout for worked markers. More then 2 seconds difference, no decode! Conventions may change with time or by user preference; you can modify the frequency table as desired." These features can be selectively enabled to match band and signal conditions as well as the user's available CPU horsepower. As a result, the signal report I end up giving is like 30dB higher than it would be if I left the entire passband open. 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 . ARRL 10 Meter contest - add Data mode | QRZ Forums FT8 Signal Reports - NARC Forum Please Log in or Create an account to join the conversation. Sometimes propagation is like a laser. FT8 is by nature < 50% duty cycle. Between the radio and SteppIR DB18, I have these devices inline: Welcome to the world of Antennas, Propagation and Black Box Technology!! JT65, JT9, FT8 SNR Explained. Easy doesn't equate with bad. For example, an FT8 signal is 50hz wide (bandwidth). From DXNews.com, 59 plus 20 for a really strong USB signal, 47 for a somewhat weak but still readable USB signal. Many Thanks for the link James, explains it well, a useful chart that gives the scale. What are the frequencies? - Lucas / W6AER. New chunks of messages arrive every 15 seconds, and are decoded by the WSJT-X software, which displays the messages like this: 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. Could a strong signal lower the gain so much that the weaker signal no longer decodes? 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. According to Taylor, the important characteristics of FT8 are T/R sequence length: 15 s Message length: 75 bits + 12-bit CRC FEC code: (174,87) LDPC Modulation: 8-FSK, keying rate = 6.25 baud; tone spacing = 6.25 Hz Waveform: Continuous phase, constant envelope Occupied bandwidth: 50 Hz Any other suggestions how to troubleshoot this? 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). FT8 and GridTracker - Digital Amateur Radio for digital amateur - VK3FS Both are compromises, but my FT8 contacts in Antarctica, Fiji, Australia, NZ, Japan, etc don't know that. Remember this is a S/N report,not a power level report. 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. You may be working them off their side, or even long path. When you get back a signal report from someone, it just tells you how loud you were on their setup at that particular time. Amateur Radio and FT8 - Blargh On average I run about 30 watts only on this mode and have had some success on 70cms along with the other bands. FT8 - Signal Identification Wiki But I do look at a lot of FT8 op QRZ profiles of people running an Icom 7300 to some freakishly compromise setup. 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)). There doesn't necessarily need to be a new operating class for Data modes, but that would be OK too. I now have a new Windows 10 computer, loaded with the latest versions of WSJT-X (v2.2.2) and JTAlert (v2.16.17). 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. Only thing I dont really understand is how the signal reporting works. That being said, it just means you are coming in loud at the receiving location. There are several types of interface available, depending on your rig. Any suggestions on what the problem might be? Please review the new, If you are having a problem, please refer to the. When I run FT-8 I set the filter wide open which bumps up to the 15Khz roofing filter instead of the ~3Khz SSB filter. You can test it by clapping your hands or sneezing while the FT8 transmission is ongoing, if you see something appearing in the waterfall on your monitor (as I did) then turn the MIC off. Free Training. canadian space agency; outlander claire tells jamie the truth; kendra place apartments gallatin, tn Please leave your Call Sign if applicable. WARC Bands: What are They and How Can I Take Advantage of Them. I wonder if raising the far end up any more would help? I would think that is more than enough to get a decent signal report. The test_cookie is set by doubleclick.net and is used to determine if the user's browser supports cookies. The frequency shift between tones is 6.25Hz, the tone duration is 0.16s. A cookie set by YouTube to measure bandwidth that determines whether the user gets the new or old player interface. As we can see, FT8 is quite an interesting protocol. Rules don't say anything about Grid Squares or FT8 signal reports. signal reports when using FT8 and JT65. You are just very strong. I can see on an external SWR meter that I am sending 100w. FT8 was developed by Joe Taylor (K1JT) and Steve Franke (K9AN). On the other hand, the almost complete automation of the process definitely reduces the role of operator skills. 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. Welcome to Reddit's own amateur (ham) radio club. Image source: www.qsl.net/w1dyj/FT8%20for%20web.pdf. On Tue, Jan 4, 2022 at 07:19 PM, neil_zampella wrote: its key down on the carrier how is that 50%? Just to report that quarantine in between I was able to pump some hours into the long delayed FT8 transceiver based on a raspberry pi using the RPiTX package and now ft8_lib. As we know, we have a maximum of 8 tones (modulation type is FSK-8). The cookie is used to store the user consent for the cookies in the category "Performance". I'm using a TS-590S for FT-8 on a MyAntennas 4010-1k EFHW that's around 35'. YouTube sets this cookie to store the video preferences of the user using embedded YouTube video. The other thing to keep in mind is that signal level is relative to the noise level around the signal. 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. Press J to jump to the feed. ), QSO-only communication protocol used by amateur radio ("ham radio") operators. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. This runs in the background and keeps your clock in-sync by resetting the time to one of the online atomic clock servers every 20 minutes. Antenna for 70cms is a 7 ele ZLspecial, fixed towards SE up at about 15 feet. As we can see, FT8 is quite an interesting protocol. This cookie is set by GDPR Cookie Consent plugin. It's not a measure of your output. I've been licensed long enough to know this, but I've only recently in the past couple of months started on FT-8. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The majority of DX stations have voted in favor of it. Why are the signal reports negative numbers? I forgot how the software handles the ratio. You can find multitudes of contacts on these frequencies. Be sure to configure your software properly as described below. A +12 signal at times says more about the other persons low noise floor than whether you maybe a strong signal. No Membership Fees. 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. Overcrowding encourages some to turn on their amplifiers, which only makes things worse.
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