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K3LOE MikeFlying to Hotlanta today for a conference. Decided not to bring a radio and to just tune around on websdr. If I have any free time, priorities will be learning about WSPR, WSJT-X & Olivia and desoldering SMD IC chips. I’m receiving WSPR signals but my tx is not being spotted. Got a qrz-unknown callsign on a boat just north of Dominican Republic on the tropic of cancer yesterday!<a href="https://mastodon.radio/tags/wspr" class="mention hashtag" rel="nofollow noopener" target="_blank">#wspr</a> <a href="https://mastodon.radio/tags/websdr" class="mention hashtag" rel="nofollow noopener" target="_blank">#websdr</a> <a href="https://mastodon.radio/tags/smd" class="mention hashtag" rel="nofollow noopener" target="_blank">#smd</a> <a href="https://mastodon.radio/tags/desoldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#desoldering</a> <a href="https://mastodon.radio/tags/olivia" class="mention hashtag" rel="nofollow noopener" target="_blank">#olivia</a>

SWLing PostBob’s Radio Corner: Pairing a Phone or Tablet with a Radio<a href="https://swling.com/blog/2025/03/bobs-radio-corner-pairing-a-phone-or-tablet-with-a-radio/" rel="nofollow noopener" translate="no" target="_blank">https://swling.com/blog/2025/03/bobs-radio-corner-pairing-a-phone-or-tablet-with-a-radio/</a><a href="https://mastodon.radio/tags/AMRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#AMRadio</a> <a href="https://mastodon.radio/tags/BobColegrove" class="mention hashtag" rel="nofollow noopener" target="_blank">#BobColegrove</a> <a href="https://mastodon.radio/tags/BobsRadioCorner" class="mention hashtag" rel="nofollow noopener" target="_blank">#BobsRadioCorner</a> <a href="https://mastodon.radio/tags/GuestPosts" class="mention hashtag" rel="nofollow noopener" target="_blank">#GuestPosts</a> <a href="https://mastodon.radio/tags/KiwiSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#KiwiSDR</a> <a href="https://mastodon.radio/tags/Mediumwave" class="mention hashtag" rel="nofollow noopener" target="_blank">#Mediumwave</a> <a href="https://mastodon.radio/tags/ShortwaveBroadcastSchedules" class="mention hashtag" rel="nofollow noopener" target="_blank">#ShortwaveBroadcastSchedules</a> <a href="https://mastodon.radio/tags/ShortwaveRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#ShortwaveRadio</a> <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a>

Ed W8EMV :radio_tower:Utah Hockey Club, 1280 AM on Northern Utah WebSDR Yellow. <a href="https://mastodon.radio/tags/KZNS" class="mention hashtag" rel="nofollow noopener" target="_blank">#KZNS</a> Salt Lake City monitored from 80 miles north in Corrine, UT.The KZNS 1280 web call is blacked out (because reasons? money? there's a way to pay for listening to hockey on the radio?)Tied with the Maple Leafs with 5 minutes left in the 3d period.KZNS is 50 kilowatts during the day, but only 670 watts at night. I hear another station underneath the hockey broadcast but the announcers win the contest.<a href="https://mastodon.radio/tags/websdr" class="mention hashtag" rel="nofollow noopener" target="_blank">#websdr</a> <a href="https://mastodon.radio/tags/amdx" class="mention hashtag" rel="nofollow noopener" target="_blank">#amdx</a> <a href="https://mastodon.radio/tags/hockeydx" class="mention hashtag" rel="nofollow noopener" target="_blank">#hockeydx</a>

scyTIL: The wide-band <a href="https://chaos.social/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> of the University of Twente provides waterfall diagrams for the whole day, plotting the station's full spectrum (0–29 MHz).It's beautiful. 😍<a href="http://websdr.ewi.utwente.nl:8901/fullday/" rel="nofollow noopener" translate="no" target="_blank">http://websdr.ewi.utwente.nl:8901/fullday/</a><a href="https://chaos.social/tags/HamRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#HamRadio</a>

Jesse Alexander, WB2IFS/3I learned about this part of the <a href="https://mastodon.hams.social/tags/radiospectrum" class="mention hashtag" rel="nofollow noopener" target="_blank">#radiospectrum</a> called the <a href="https://mastodon.hams.social/tags/waterhole" class="mention hashtag" rel="nofollow noopener" target="_blank">#waterhole</a> around 1400 MHz that could serve as an <a href="https://mastodon.hams.social/tags/interstellar" class="mention hashtag" rel="nofollow noopener" target="_blank">#interstellar</a> communications band. I was sooo excited that I took a photo of the frequency from the movie and tried to find a <a href="https://mastodon.hams.social/tags/websdr" class="mention hashtag" rel="nofollow noopener" target="_blank">#websdr</a> with coverage in the band. <a href="https://www.seti.net/indepth/waterhole/waterhole.php" rel="nofollow noopener" translate="no" target="_blank">https://www.seti.net/indepth/waterhole/waterhole.php</a>2/n

Georg NowakRadio im Eimer Ein Leserbrief in der taz <a href="https://taz.de/!6066662/" rel="nofollow noopener" translate="no" target="_blank">https://taz.de/!6066662/</a> (dort Abschnitt "Störsender") erinnerte mich an die Bedeutung des einfachsten Kommunikationsmittels nach dem <a href="https://climatejustice.social/tags/Drahttelefon" class="mention hashtag" rel="nofollow noopener" target="_blank">#Drahttelefon</a>, <a href="https://climatejustice.social/tags/Dosentelefon" class="mention hashtag" rel="nofollow noopener" target="_blank">#Dosentelefon</a> und dem Vier-Augen-Gespräch.In Zeiten des <a href="https://climatejustice.social/tags/Internet" class="mention hashtag" rel="nofollow noopener" target="_blank">#Internet</a>'s denkt kaum jemand über den technischen und <a href="https://climatejustice.social/tags/Material" class="mention hashtag" rel="nofollow noopener" target="_blank">#Material</a> - <a href="https://climatejustice.social/tags/Aufwand" class="mention hashtag" rel="nofollow noopener" target="_blank">#Aufwand</a> nach, den das weltumspannende Netz erfordert; kaum jemand kennt die simple Technik, die einem <a href="https://climatejustice.social/tags/Rundfunk" class="mention hashtag" rel="nofollow noopener" target="_blank">#Rundfunk</a>- / <a href="https://climatejustice.social/tags/Amateurfunk" class="mention hashtag" rel="nofollow noopener" target="_blank">#Amateurfunk</a>-Sender und dazu passenden <a href="https://climatejustice.social/tags/Empf%C3%A4nger" class="mention hashtag" rel="nofollow noopener" target="_blank">#Empfänger</a> zugrundeliegt. (Ich habe übrigens die erste <a href="https://climatejustice.social/tags/Prinzipschaltung" class="mention hashtag" rel="nofollow noopener" target="_blank">#Prinzipschaltung</a> eines simplen Senders im ersten <a href="https://climatejustice.social/tags/Physik" class="mention hashtag" rel="nofollow noopener" target="_blank">#Physik</a> - <a href="https://climatejustice.social/tags/Schulbuch" class="mention hashtag" rel="nofollow noopener" target="_blank">#Schulbuch</a> gefunden, das in meinem Gymnasium verwendet wurde. Damals noch mit einer <a href="https://climatejustice.social/tags/R%C3%B6hre" class="mention hashtag" rel="nofollow noopener" target="_blank">#Röhre</a> <a href="https://de.wikipedia.org/wiki/Elektronenr%C3%B6hre" rel="nofollow noopener" translate="no" target="_blank">https://de.wikipedia.org/wiki/Elektronenr%C3%B6hre</a> als Verstärkerelement)Inzwischen sind in Deutschland und vielen anderen Ländern die "klassischen" Radiobereiche <a href="https://climatejustice.social/tags/Mittelwelle" class="mention hashtag" rel="nofollow noopener" target="_blank">#Mittelwelle</a> und <a href="https://climatejustice.social/tags/Langwelle" class="mention hashtag" rel="nofollow noopener" target="_blank">#Langwelle</a> fast völlig außer Betrieb gesetzt. Immerhin: Der Langwellensender <a href="https://climatejustice.social/tags/Droitwich" class="mention hashtag" rel="nofollow noopener" target="_blank">#Droitwich</a> in England <a href="https://de.wikipedia.org/wiki/Sender_Droitwich" rel="nofollow noopener" translate="no" target="_blank">https://de.wikipedia.org/wiki/Sender_Droitwich</a> lebt noch.Universitäre <a href="https://climatejustice.social/tags/Forschung" class="mention hashtag" rel="nofollow noopener" target="_blank">#Forschung</a> und industrielle <a href="https://climatejustice.social/tags/Entwicklung" class="mention hashtag" rel="nofollow noopener" target="_blank">#Entwicklung</a> haben zu einem Verfahren geführt, das die klassische <a href="https://climatejustice.social/tags/Rundfunktechnik" class="mention hashtag" rel="nofollow noopener" target="_blank">#Rundfunktechnik</a> mit der <a href="https://climatejustice.social/tags/Internettechnik" class="mention hashtag" rel="nofollow noopener" target="_blank">#Internettechnik</a> verbindet: <a href="https://climatejustice.social/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> <a href="https://de.wikipedia.org/wiki/Software_Defined_Radio" rel="nofollow noopener" translate="no" target="_blank">https://de.wikipedia.org/wiki/Software_Defined_Radio</a> <a href="http://websdr.org/" rel="nofollow noopener" translate="no" target="_blank">http://websdr.org/</a> .Funktionsweise: Irgendwo auf der Erde steht eine Radioempfangsstation mit Antenne, hochmoderner digitaler Empfangstechnik (nicht bloß einer "Röhre"), einem angeschlossenen Internetserver, der Aufträge entgegennimmt und ausführt.Welche Aufträge? Zum Beispiel: 1. "Stell mal die Frequenz 198 kHz (des Senders Droitwich) ein und übertrage die volle Bandbreite (AM) oder nur das obere Seitenband (USB) oder das untere (LSB)." Oder: 2. "Zeig mir das Signal des Zeitzeichensenders <a href="https://climatejustice.social/tags/DCF77" class="mention hashtag" rel="nofollow noopener" target="_blank">#DCF77</a> auf der Frequenz 77,5 kHz (bei <a href="https://climatejustice.social/tags/Mainflingen" class="mention hashtag" rel="nofollow noopener" target="_blank">#Mainflingen</a> bei Frankfurt/Main)." (Die übliche englische Schreibweise "77.5" beachten!) Jeder Sender hat aufgrund internationaler Abmachungen für seinen Anwendungszweck nur eine bestimmte Sendeleistung und Reichweite. Deshalb kann man nicht überall auf der Erde jeden beliebigen der x-tausend Sender auf diese Weise empfangen. Dafür ist die Technik inzwischen aber weltweit vertreten: <a href="http://kiwisdr.com/public/" rel="nofollow noopener" translate="no" target="_blank">http://kiwisdr.com/public/</a> . Wenn man sowohl die alte Radiotechnik als auch die moderne Internettechnik kennengelernt hat, weiß man beide zu schätzen. Das heutige Anspruchsdenken, alles mitzukriegen und nichts zu verpassen, überall mitreden und in Höchstgeschwindigkeit neueste Nachrichten raushauen zu können, war damals nicht möglich. Üblicherweise wurden Briefe geschrieben; heute steigt das Briefporto, weil nur noch offizielle Dokumente und Paketsendungen körperlich transportiert werden.Mit dem Geschwindigkeitswahn kam die Gedankenlosigkeit.-- <a href="https://climatejustice.social/tags/Klimawandel" class="mention hashtag" rel="nofollow noopener" target="_blank">#Klimawandel</a>? MEIN Anteil ist doch winzig. -- Die Behauptung ist falsch? Hab ich doch im <a href="https://climatejustice.social/tags/Internet" class="mention hashtag" rel="nofollow noopener" target="_blank">#Internet</a> genau so gefunden.Vor 90 Jahren mußten die Menschen im begrenzten Rahmen mit lautstarken Ansprachen in Stadien oder landesweit über - damals relativ starke - Radiosender zu Untaten angestachelt werden; heute reicht ein Smartphone mit der passenden Äpp.

Jan BI have optimized a few things with my WebSDR setup (replaced noisy power supplies, added chokes and added a larger whip to the miniwhip) and now get highly better results. I received over 12k stations from 115 countries in the last 24 hours. <a href="https://mastodon.social/tags/hamradio" class="mention hashtag" rel="tag">#hamradio</a> <a href="https://mastodon.social/tags/ft8" class="mention hashtag" rel="tag">#ft8</a> <a href="https://mastodon.social/tags/websdr" class="mention hashtag" rel="tag">#websdr</a> <a href="https://mastodon.social/tags/sdr" class="mention hashtag" rel="tag">#sdr</a> <a href="https://mastodon.social/tags/amateurradio" class="mention hashtag" rel="tag">#amateurradio</a> <a href="https://mastodon.social/tags/hf" class="mention hashtag" rel="tag">#hf</a> <a href="https://mastodon.social/tags/web" class="mention hashtag" rel="tag">#web</a>-888

Bharath M. PalavalliIf only I had more time! Here is one more fancy new toy that could be of interest: <a href="https://www.crowdsupply.com/signalens/signalsdr-pro" rel="nofollow noopener" target="_blank">https://www.crowdsupply.com/signalens/signalsdr-pro</a> <a href="https://mastodon.sdf.org/tags/websdr" class="mention hashtag" rel="nofollow noopener" target="_blank">#websdr</a> <a href="https://mastodon.sdf.org/tags/amateurradio" class="mention hashtag" rel="nofollow noopener" target="_blank">#amateurradio</a>

Coraline Ada EhmkeThis afternoon I’m hanging out with WebSDR friends, exploring the radio frequency spectrum. One of my daily go-to stations is out of Poland, Polskie Radio Jedynka broadcasting at 225 kHz. Sometimes it's talk radio, but when it's music, the music is usually _really good_ and varied. What are some of your favorite frequencies?<a href="https://ruby.social/tags/websdr" class="mention hashtag" rel="nofollow noopener" target="_blank">#websdr</a> <a href="https://ruby.social/tags/shortwave" class="mention hashtag" rel="nofollow noopener" target="_blank">#shortwave</a>

Bharath M. Palavalli<a href="https://fosstodon.org/@jroimartin" class="u-url mention" rel="nofollow noopener" target="_blank">@jroimartin</a> Nice! Now if I can convince someone with the elisp skills to do something similar for <a href="https://mastodon.sdf.org/tags/websdr" class="mention hashtag" rel="nofollow noopener" target="_blank">#websdr</a>.

DigitalInfinitySo ich muss jetzt echt mal Werbung machen für den <a href="https://digitalcourage.social/tags/amateurfunk" class="mention hashtag" rel="nofollow noopener" target="_blank">#amateurfunk</a> <a href="https://digitalcourage.social/tags/amateurradio" class="mention hashtag" rel="nofollow noopener" target="_blank">#amateurradio</a> ! Heute war der erste Abend Kurs N-Lizenz bei der VHS. Die sind so cool! Total liebevoll alle Infos aufbereitet, wissen auf alle Fragen eine Antwort und geben sich richtig Mühe die Funker vom <a href="https://digitalcourage.social/tags/darc" class="mention hashtag" rel="nofollow noopener" target="_blank">#darc</a> Ortsverband A02 in Bruchsal. Das macht echt Spaß. Wenn ihr technikinteressiert seid und mal in eine andere Welt schauen wollt dann schaut mal, ob's bei euch in der Nähe nicht auch nen Amateurfunkverein gibt.So und jetzt muss ich mir nen coolen <a href="https://digitalcourage.social/tags/websdr" class="mention hashtag" rel="nofollow noopener" target="_blank">#websdr</a> suchen und rumzappen ;)

Jan BI am using an <a href="https://mastodon.social/tags/web" class="mention hashtag" rel="tag">#web</a>-888 <a href="https://mastodon.social/tags/websdr" class="mention hashtag" rel="tag">#websdr</a> with an mini whip antenna to monitor 11 bands of <a href="https://mastodon.social/tags/FT8" class="mention hashtag" rel="tag">#FT8</a> and <a href="https://mastodon.social/tags/FT4" class="mention hashtag" rel="tag">#FT4</a> in parallel and automatically report it to pskreporter.That is what it received in the last 24 hours (under DK9JHB/sdr)<a href="https://mastodon.social/tags/hamradio" class="mention hashtag" rel="tag">#hamradio</a> <a href="https://mastodon.social/tags/amateurradio" class="mention hashtag" rel="tag">#amateurradio</a> <a href="https://mastodon.social/tags/sdr" class="mention hashtag" rel="tag">#sdr</a> <a href="https://mastodon.social/tags/qrp" class="mention hashtag" rel="tag">#qrp</a>

Alex (HB9IAH)While browsing <a href="https://mastodon.radio/tags/SDRplay" class="mention hashtag" rel="nofollow noopener" target="_blank">#SDRplay</a>, I was tempted to run my own <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> station using the "SDRplay nRSP-ST Receiver" 😄 <a href="https://www.sdrplay.com/nrspst/" rel="nofollow noopener" translate="no" target="_blank">https://www.sdrplay.com/nrspst/</a>

Arnie the DXman | HF4And this is the difference on Twente <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a>, which I also fired up a bit later, maybe even post-peak... but the difference is still clear. <a href="https://mastodon.radio/tags/shortwave" class="mention hashtag" rel="nofollow noopener" target="_blank">#shortwave</a> <a href="https://mastodon.radio/tags/SpaceWeather" class="mention hashtag" rel="nofollow noopener" target="_blank">#SpaceWeather</a>

Alex (HB9IAH)That said, I checked a <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> after few minutes and heard <a href="https://mastodon.radio/tags/SAQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#SAQ</a> there. It was still faint in the Netherlands, probably because their antenna was way off for it, but I clearly heard it. 😁

Arnie the DXman | HF4The user bar on Twente <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> at the 17.2 kHz mark is getting more & more white as people tune away or leave the site completely... but it did reach almost to the very top of the page! 😂 <a href="https://mastodon.radio/tags/SAQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#SAQ</a> <a href="https://mastodon.radio/tags/GrimetonRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#GrimetonRadio</a> <a href="https://mastodon.radio/tags/VLF" class="mention hashtag" rel="nofollow noopener" target="_blank">#VLF</a>

Arnie the DXman | HF4<a href="https://mastodon.radio/tags/SAQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#SAQ</a> is rather weak on this <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> in Germany... still better than in Twente, while I am getting nothing 😬 <a href="https://mastodon.radio/tags/GrimetonRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#GrimetonRadio</a> <a href="https://mastodon.radio/tags/VLF" class="mention hashtag" rel="nofollow noopener" target="_blank">#VLF</a><a href="http://vlf.spdns.eu:8901/" rel="nofollow noopener" translate="no" target="_blank">http://vlf.spdns.eu:8901/</a>

Arnie the DXman | HF4Over 1000 users online on Twente <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> and counting! <a href="https://mastodon.radio/tags/SAQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#SAQ</a> <a href="https://mastodon.radio/tags/GrimetonRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#GrimetonRadio</a> <a href="https://mastodon.radio/tags/VLF" class="mention hashtag" rel="nofollow noopener" target="_blank">#VLF</a>

Arnie the DXman | HF4It's still some 20 minutes to the message, and the Twente <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> user bar at 17.2 kHz mark is overflowing off my screen 😱 <a href="https://mastodon.radio/tags/SAQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#SAQ</a> <a href="https://mastodon.radio/tags/GrimetonRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#GrimetonRadio</a> <a href="https://mastodon.radio/tags/VLF" class="mention hashtag" rel="nofollow noopener" target="_blank">#VLF</a>

Arnie the DXman | HF4The users bar on Twente <a href="https://mastodon.radio/tags/WebSDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#WebSDR</a> at 17.2 kHz is starting to climb up 🙂 <a href="https://mastodon.radio/tags/SAQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#SAQ</a> <a href="https://mastodon.radio/tags/GrimetonRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#GrimetonRadio</a> <a href="https://mastodon.radio/tags/VLF" class="mention hashtag" rel="nofollow noopener" target="_blank">#VLF</a>

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