SFBA.social

14 posts14 participants1 post today

Sebastian DO2SGF<a href="https://opensourcesdrlab.com/products/70mhz-6ghz-2r2t-b220-mini-ad9361-software-defined-radio-development-board-sdr-libresdr-b210mini-support-uhd-pluto-oai" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://opensourcesdrlab.com/products/70mhz-6ghz-2r2t-b220-mini-ad9361-software-defined-radio-development-board-sdr-libresdr-b210mini-support-uhd-pluto-oai</a> This <a href="https://social.darc.de/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a> looks very interesting. Depending on the firmware you load onto its SD-card it emulates a <a href="https://social.darc.de/tags/usrp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#usrp</a> or a <a href="https://social.darc.de/tags/plutosdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#plutosdr</a> and has an input for a 10 MHz reference frequency. Bonus: it's open hardware. <a href="https://social.darc.de/tags/libresdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#libresdr</a> <a href="https://social.darc.de/tags/amateurradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#amateurradio</a> <a href="https://social.darc.de/tags/softwaredefinedradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#softwaredefinedradio</a>

ImogenLooking at the Hack RF One, any thoughts?<a href="https://mstdn.social/tags/Radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Radio</a> <a href="https://mstdn.social/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> <a href="https://mstdn.social/tags/HackRF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HackRF</a>

gcvsa ⭐️🔰🇺🇸 🇵🇭I have to be honest and say that this sudden revelation I've just had about <a href="https://mstdn.plus/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> (software defined <a href="https://mstdn.plus/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#radio</a>) is a big deal to me. Even though I'm a ham (although my license is actually expired and I need to fix that), I never bothered before with SDR, since I owned actual all-band transceivers, but the advent of the <a href="https://mstdn.plus/tags/RaspberryPi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RaspberryPi</a> and my <a href="https://mstdn.plus/tags/travel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#travel</a> network rig means I now have a perfect platform for a portable/travel SDR receiver, for only $50 more.

gcvsa ⭐️🔰🇺🇸 🇵🇭I don't know why this didn't occur to me before, but I was just thinking that it might be pretty cool to add a software defined <a href="https://mstdn.plus/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#radio</a> receiver <a href="https://mstdn.plus/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> to my travel <a href="https://mstdn.plus/tags/RaspberryPi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RaspberryPi</a> 4B.I'm also seriously considering replacing the <a href="https://mstdn.plus/tags/powerbank" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#powerbank</a> on my <a href="https://mstdn.plus/tags/travel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#travel</a> WiFi network board with two smaller powerbanks for better flexibility and more battery life. I cannot do passthrough power with the one bank, because I have to use the input port for output.

Steven RosenbergWhile admitting that most of the Zero Retries amateur radio newsletter is way over my head — and I'm a General Class license holder — I was able to pull out of the most recent issue that THIS IS THE RADIO TO GET (and to beat):<a href="https://www.hfsignals.com/index.php/zbitx/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.hfsignals.com/index.php/zbitx/</a><a href="https://www.zeroretries.org/p/zero-retries-0198?open=false#%C2%A7my-new-perspective-sdr-technology-is-the-imperative-for-us-amateur-radio" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.zeroretries.org/p/zero-retries-0198?open=false#%C2%A7my-new-perspective-sdr-technology-is-the-imperative-for-us-amateur-radio</a><a href="https://ruby.social/tags/amateur_radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#amateur_radio</a> <a href="https://ruby.social/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hamradio</a> <a href="https://ruby.social/tags/zeroretries" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#zeroretries</a> <a href="https://ruby.social/tags/zbitx" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#zbitx</a> <a href="https://ruby.social/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a>

Steve Stroh N8GNJZero Retries 0198 - <a href="https://www.zeroretries.org/p/zero-retries-0198" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.zeroretries.org/p/zero-retries-0198</a>* Credit Where Due - “Seattle” Inspirations for IP400 * IP400 Update 2025-04-18 * Software Defined Radio is THE Imperative for US Amateur Radio * Some Selected Comments from FCC Docket GN 25-133 * A Vision for Open Innovation: ARDC’s StrategyZero Retries is an independent newsletter promoting tech innovation that is occurring in Amateur Radio. Now in its fourth year of publication, with 2600+ subscribers. <a href="https://mastodon.radio/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hamradio</a> <a href="https://mastodon.radio/tags/ip400" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ip400</a> <a href="https://mastodon.radio/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a> <a href="https://mastodon.radio/tags/fcc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fcc</a> <a href="https://mastodon.radio/tags/ardc_73" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ardc_73</a>

jbmThe kid and I were at Kohl's (discount department store, like TK Maxx) and I stumbled across a nice little $20 puzzle for myself. It's only got two pieces, though.It's a wireless grill thermometer, which is going to have some weirdo custom wireless protocol in an ISM band. These are usually fun protocols to reverse engineer. I expect all the text logic is in the display, but who knows?!it's squirreled away for a day when I need the distraction. <a href="https://mastodon.radio/tags/gnuradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gnuradio</a> <a href="https://mastodon.radio/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a>

Eric VitielloSo I added another SDR to my <a href="https://oldbytes.space/tags/PiAware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PiAware</a> device for 978kHz, because a few flying machines flew over but I didn't get any info from them, so I assumed they were using the older wavelength, and I've sadly not seen anything yet.<a href="https://oldbytes.space/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> <a href="https://oldbytes.space/tags/planespotting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#planespotting</a>

race over hills (📞7272)Mal gucken, was der <a href="https://mastodon.social/@signalspielplatz" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@signalspielplatz</a> so auf der Luftschnittstelle treibt <a href="https://chaos.social/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a> <a href="https://chaos.social/tags/pocsag" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pocsag</a> <a href="https://chaos.social/tags/eh22" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#eh22</a>

73sI feel like my FM de-emphasis filter isn't quite right. Does anyone happen to know if FM broadcasts typically have this kind of spectrum after de-emphasis? (left: before, right: after). I used a very basic Butterworth IIR filter to but it feels like the slope is too steep.<a href="https://mastodon.social/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#radio</a> <a href="https://mastodon.social/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a>

lmfCreating an Open Source DMR Transceiver with a LimeSDR Mini <a href="https://www.rtl-sdr.com/creating-an-open-source-dmr-transceiver-with-a-limesdr-mini/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.rtl-sdr.com/creating-an-open-source-dmr-transceiver-with-a-limesdr-mini/</a>"I wrote an article about the implementation of an open-source DMR transceiver using the LimeSDR-mini, GNU Radio and Codec2, which could be used for SDR experiments.The DMR modem was designed to work both in repeater and direct (DMO) mode, and supports voice and other basic features of the ETSI TS 102 361-1 standard.In the article there is discussion about aspects of the TDMA transmission, time synchronization, as well as how David Rowe's Codec2 can be used to replace the default vocoder."<a href="https://social.vivaldi.net/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#radio</a> <a href="https://social.vivaldi.net/tags/amateur_radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#amateur_radio</a> <a href="https://social.vivaldi.net/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a> <a href="https://social.vivaldi.net/tags/transceiver" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#transceiver</a>

chibi-[N]ah🇫🇷 :gold_account:<a href="https://mamot.fr/@devnull" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@devnull</a> >.< sérieusement… <a href="https://social.nah.re/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> <a href="https://social.nah.re/tags/SWL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SWL</a> <a href="https://social.nah.re/tags/GQRX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GQRX</a>

chibi-[N]ah🇫🇷 :gold_account:<a href="https://mamot.fr/@devnull" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@devnull</a> Euh… WTF ! <a href="https://social.nah.re/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> <a href="https://social.nah.re/tags/SWL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SWL</a> <a href="https://social.nah.re/tags/GQRX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GQRX</a>

Kevin Karhan :verified:<a href="https://infosec.exchange/@micahflee" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@micahflee</a> lemme guess: <a href="https://mastodon.social/@eff" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@eff</a> just took a multi-network eSIM and multi-network WWAN modules to scan for "<a href="https://infosec.space/tags/deauth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#deauth</a>" / "<a href="https://infosec.space/tags/EvilTwin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#EvilTwin</a>" attacks?Cuz I remember <a href="https://social.heise.de/@heiseonline" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@heiseonline</a> or <a href="https://squeet.me/profile/golem" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@golem</a> actually suggest this as a method to detect <a href="https://infosec.space/tags/IMSIcatchers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IMSIcatchers</a> without requiring an expensive <a href="https://infosec.space/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a>: <ul><li>By precisely looking when which WWAN stick (for <a href="https://infosec.space/tags/3G" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#3G</a> back then) got disconnected and warning if they all got disconnected & reconnected at the same time...</li></ul>AFAIK <a href="https://infosec.space/tags/GSMK" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GSMK</a> uses that same technique for their <a href="https://infosec.space/tags/Baseband" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Baseband</a>-<a href="https://infosec.space/tags/Firewall" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Firewall</a> to automatically detect <a href="https://infosec.space/tags/Interception" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Interception</a> attempts and deploy countermeasures!

Marcus MüllerCrowdsourcing <a href="https://mastodon.social/tags/DSP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DSP</a> creativity!You could help <a href="https://fosstodon.org/@gnuradio" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@gnuradio</a> 's block documentation wiki a lot if you could try out our instructions for how to add example flowgraphs to Block Doc pages! <a href="https://wiki.gnuradio.org/index.php?title=How_to_Add_an_Example_Flowgraph_to_a_Block_Doc" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://wiki.gnuradio.org/index.php?title=How_to_Add_an_Example_Flowgraph_to_a_Block_Doc</a>The documentation team (and countless contributors) have created a host of 555 block documentation pages to date. Not every single one of these has an example flowgraph that really illustrates the useful things you could do with that block. Could you help? <a href="https://mastodon.social/tags/gnuradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gnuradio</a> <a href="https://mastodon.social/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a> <a href="https://mastodon.social/tags/docs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#docs</a> <a href="https://mastodon.social/tags/docstodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#docstodon</a>

larsEine der besseren Folgen des <a href="https://social.lsnet.eu/tags/Golem" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Golem</a> <a href="https://social.lsnet.eu/tags/BesserWissen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BesserWissen</a> <a href="https://social.lsnet.eu/tags/Podcast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Podcast</a> u.a. über <a href="https://social.lsnet.eu/tags/Freifunk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Freifunk</a>, <a href="https://social.lsnet.eu/tags/ProviderPrivileg" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ProviderPrivileg</a>, <a href="https://social.lsnet.eu/tags/Abmahnindustrie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Abmahnindustrie</a>, <a href="https://social.lsnet.eu/tags/DSL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DSL</a>, <a href="https://social.lsnet.eu/tags/OPAL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OPAL</a>, die ersten <a href="https://social.lsnet.eu/tags/Flatrates" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Flatrates</a>, <a href="https://social.lsnet.eu/tags/UKW" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UKW</a>-<a href="https://social.lsnet.eu/tags/Rundfunk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Rundfunk</a>, freies <a href="https://social.lsnet.eu/tags/Radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Radio</a>, <a href="https://social.lsnet.eu/tags/Piratensender" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Piratensender</a>, das Anpeilen von Radio/TV-Empfängern(!) und die philosophischen Fragen der <a href="https://social.lsnet.eu/tags/Wahrnehmungsforschung" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Wahrnehmungsforschung</a>, <a href="https://social.lsnet.eu/tags/FreierWille" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreierWille</a> und Signallaufzeiten im <a href="https://social.lsnet.eu/tags/Gehirn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gehirn</a>:"Freifunk und Philosophie" <a href="https://besserwissen.podigee.io/132-elektrawagenrad" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://besserwissen.podigee.io/132-elektrawagenrad</a><a href="https://social.lsnet.eu/tags/Funk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Funk</a> <a href="https://social.lsnet.eu/tags/Amateurfunk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Amateurfunk</a> <a href="https://social.lsnet.eu/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> <a href="https://social.lsnet.eu/tags/Telekommunikation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Telekommunikation</a> <a href="https://social.lsnet.eu/tags/Philosophie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Philosophie</a>

Steve Stroh N8GNJZero Retries 0196 - <a href="https://www.zeroretries.org/p/zero-retries-0196" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.zeroretries.org/p/zero-retries-0196</a> (fix)* Zero Retries Digital Conf * Frank Brickle AB2KT SK * National Amateur Radio Alliance * HamSCI Meteor Scatter QSO Party 2025 * Filing for 219 -220 MHz Band Rules Changes * Simple, Low-Cost Cross-Band, Digital ATV Repeater * New SDRs From China * VHF TO Microwave Multi-Mode Transceiver * Appalachian Trail Golden Packet Event is 2025-07-19Zero Retries is an independent newsletter. Now in its 4th year with 2600+ subscribers. <a href="https://mastodon.radio/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hamradio</a> <a href="https://mastodon.radio/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sdr</a> <a href="https://mastodon.radio/tags/atv" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#atv</a>

Matt Layman🐍 How can you use <a href="https://mastodon.social/tags/Python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Python</a> with Software Defined Radios (<a href="https://mastodon.social/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a>)? In this presentation, Patrick shows us his neat project of applying Python to recording radio signals. <a href="https://www.youtube.com/watch?v=MonR5zZL-Es" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.youtube.com/watch?v=MonR5zZL-Es</a>

Cees-Jan Kiewiet :rp: :wm:Finished splitting out the <a href="https://toot-toot.wyrihaxim.us/tags/ultrafeeder" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ultrafeeder</a> from the <a href="https://toot-toot.wyrihaxim.us/tags/piaware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#piaware</a> pod. Even gave it it's own namespace so only those pods have elevated privileges to access the <a href="https://toot-toot.wyrihaxim.us/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> plugged into the <a href="https://toot-toot.wyrihaxim.us/tags/USB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#USB</a> port. Both feeders are now connecting to that pod. Also started enabling <a href="https://toot-toot.wyrihaxim.us/tags/MLAT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MLAT</a> for bonus points, but had to give those pods a lot more CPU becausing that turns out to be very timing sensitive 😅

Cees-Jan Kiewiet :rp: :wm:It's very visible which node has the <a href="https://toot-toot.wyrihaxim.us/tags/SDR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SDR</a> connected to it:

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