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Kees PC1I

@pc1i.bsky.social
461 followers 562 following 647 posts

TAFKA PE2KM... HF SSB, Older digimodes, AX25, Utility SWL. FTdx10 FT-991A FT-817ND FTM-300DE VX6E. Airspy & Spyverter. 3D printing, Bambu Lab P2S Followers without radio related content or acting as political billboards = ploink...

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Kees PC1I @pc1i.bsky.social · 1h
Widely improved DSP and overall resource utilization: Noise Reduction, Co-Channel Canceller, Multi-Slice, and UI responsiveness. #sdrsharp #sdr #airspy #airspyhf #thebestgetsbetter www.youtube.com/watch?v=3aV8...
youtube.com
New SDR# r1922 Beta
YouTube video by prog
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Kees PC1I @pc1i.bsky.social · 29/09/2026
Back to HFDL reception on HF for a change. 11,348 kHz, good reception. The antenna is a T2FD, the Diamond WD330S. Receiver is the FTdx10 and the decoder is MultiPSK. #digimode #HFDL #MultiPSK #hfradio #hfutility
Screenshot showing the received airplanes and groundstations on a worldmap.
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Rob VK3BVW, Mount Evelyn DX Report @robvk3bvw.bsky.social · 26/09/2026
OPENING THE LOGBOOK - SEPTEMBER 1972 This month I talk about my first mediumwave DXpedition. Reception of stations from Europe, Africa and the Middle East at our location in south-east Victoria, Australia. Join me as we travel back in time to September 1972. medxr.blogspot.com/2026/09/open...
medxr.blogspot.com
OPENING THE LOGBOOK - SEPTEMBER, 1972
First Mediumwave DXpedition back in 1972 - amazing what could nbe heard in those days.
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Flightradar24 @flightradar24.com · 25/09/2026
Join us in the airBaltic Airbus A220 cockpit for an overnight flight from Riga to Yerevan, Armenia, and back. GPS jamming and spoofing, busy airspace and high terrain make this far more than an ordinary cockpit ride. www.youtube.com/watch?v=D0QS...
youtube.com
How Pilots Handle GPS Jamming (airBaltic A220 Cockpit to Armenia)
YouTube video by Flightradar24
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DL7AG @dl7ag.bsky.social · 25/09/2026
Radxa Dragon Q8B - Snapdragon 8cx Gen 3, 8 Kerne): 1456 Single-Core, 7207 Multi-Core, WLAN, Bluetooth, 3D-Print Case #radxa #snapdragon #linux #3dprint #hamradio #amateurfunk
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Peter, MM9SQL @mm9sql.com · 23/09/2026
OscarWatch FT4 works! 5 QSOs in the log
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Kees PC1I @pc1i.bsky.social · 21/09/2026
Oh, absolutely! The decline has already begun, and things will indeed likely head in the direction described here. Poor us... 😒 www.youtube.com/watch?v=8bVf...
youtube.com
AI & the Future of the Web
YouTube video by ExplainingComputers
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Jaume - EA3HRE @ea3hre.bsky.social · 15/09/2026
13,880.6kHz USB WEFAX (Facsimile Tx for shipping). DDK6 HAMBURG/PINNEBERG, GERMANY 10kW (1,300km) 36HR forecast surface pressure. #radio #amateurradio #dxing #dx #propagation #DXCC #wefax
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DL7AG @dl7ag.bsky.social · 08/09/2026
PSK Reporter is a great tool for seeing where your signal is actually being heard. 📡 But the map can get cluttered fast. My new guide shows how to clean it up: fewer bubbles, SNR + time on markers, and connecting lines only when needed. 👉 dl7ag.de/psk-reporte... #HamRadio #PSKReporter #FT8
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DL7AG @dl7ag.bsky.social · 29/08/2026
reeDV 2.4.0 – Digital Voice on Shortwave Is Getting Really Interesting dl7ag.de/freedv-2-4-0... #freedv #hamradio #amateurfunk
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Gareth @g0mfr.bsky.social · 25/08/2026
I buildt a 5/8 on 15m for a sngle band contest effort a few years ago and it worked really well! Does need a match to get to 50ohm input imp - this is quite a practical write up of something very similar to mine www.pa3hcm.nl?p=902
pa3hcm.nl
5/8 Wave vertical antennas for HF – Ernest Neijenhuis PA3HCM Homepage
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Dave M0TAZ @m0taz.bsky.social · 25/08/2026
12m vertical, setup detail and lessons learned. m0taz.co.uk/2026/08/12-m... #hamr #hamradio
m0taz.co.uk
12 meter vertical experiments and lessons – M0TAZ
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Peter, MM9SQL @mm9sql.com · 23/08/2026
When you are too lazy to convert paperlogs into ADIFs, you just use Computer Vision instead to do it for you
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Christine Hall @brideoflinux.bsky.social · 21/08/2026
A specialist Ubuntu-based Linux distribution designed for those interested in software-defined radio (SDR). It ships with a suite of some of the most powerful and accessible open-source SDR software: Distribution Release - DragonOS Resolute_R1 (DistroWatch.com News) distrowatch.com?newsid=12928
buff.ly
Distribution Release: DragonOS Resolute_R1 (DistroWatch.com News)
News and feature lists of Linux and BSD distributions.
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Kees PC1I @pc1i.bsky.social · 20/08/2026
A new round of improvements makes SDR#'s NINR defy physics. Noise just disappears leaving the actual natural phasing of a typical HF SSB transmission. www.youtube.com/watch?v=ep-5...
youtube.com
SDR# Improved Noise Reduction August 2026
YouTube video by prog
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George Smart, M1GEO @m1geo.com · 06/08/2026
For anyone interested in the homebrew loaded whip antenna (AX1 inspired) I posted about earlier, I've popped the design notes and files up here: www.george-smart.co.uk/2026/08/a-ho... #hamradio #homebrew #antenna #elecraft
george-smart.co.uk
A homebrew short loaded whip for 20m & 30m | George Smart – M1GEO
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IU1CYJ @iu1cyj.bsky.social · 01/08/2026
Italy HamRadio: Experimental operations extended for the 160m band, along with temporary authorizations for the 40 MHz and 70 MHz bands. #hamradio #radioamatori
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Leon N1TX @n1tx.bsky.social · 24/07/2026
For completeness, here is the only SSTV image I have received during the current UMKA-1 campaign. Captured yesterday.
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EA5JTT @ea5jtt.bsky.social · 24/07/2026
​If you get the chance to see the total solar eclipse on August 12th, you might want to try tracking solar noise variations using an SDR. I'm sharing the link to a tiny phyton tool to log and view the data. github.com/joanpao/sola...
github.com
GitHub - joanpao/solareclipse-hf-noiselogger: 29 MHz HF Noise Floor Logger for Solar Eclipse Ionospheric Monitoring using RTL-SDR Blog V4
29 MHz HF Noise Floor Logger for Solar Eclipse Ionospheric Monitoring using RTL-SDR Blog V4 - joanpao/solareclipse-hf-noiselogger
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Cees Bassa @cbassa.bsky.social · 24/07/2026
A defunct #Starlink satellite just re-entered in the atmosphere over the Netherlands. These images were captured by my allsky camera. This was one of the early Starlink satellites, having been launched in August 2020.
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Kees PC1I @pc1i.bsky.social · 25/07/2026
Already the 4th weekend of 9 this year at "our" spot in Kropswolde. I could be perfectly fine working on the radio here, but somehow it never happens. Maybe I should try a bit harder to do so? Maybe next weekend... I think... The food was good, the weather too, thank you!
A photo with a view to the east, over a blooming potato field and beautiful skies. Also a camping table with empty plates and drinking cups on it.A photo with a view towards the west. The nose of our camper van is visible on the left. A ditch runs through the frame from the right. In the distance, a farmhouse converted into a home and a row of trees are visible. All of this under a beautiful blue sky with clouds illuminated by the evening sun.
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Peter, MM9SQL @mm9sql.com · 22/07/2026
OscarWatch Tracker v0.9.8 is live! 🛰️ ▶️ FlexRadio SmartSDR LAN support ▶️Support for IC-905, Fixes for TS-2000 and other radios ▶️TCP rotators (ser2net) + OZ9AAR URC ▶️ Custom map centering Update: github.com/magicbug/Osc...
github.com
Release v0.9.8 · magicbug/OscarWatch-Tracker
OscarWatch Tracker - Version 0.9.8 FlexRadio SmartSDR Integration Native FlexRadio Support Added a dedicated SmartSDR single-radio driver operating over TCP/UDP LAN. This provides automatic local ...
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Johan PA3ANG @pa3ang.bsky.social · 20/03/2026
Been busy again in designing hard- and software. WSPR transmitter ala Sotabeams WSPR Light. pa3ang.nl/esp32-c3-wspr/
pa3ang.nl
ESP32-C3 WSPR – PA3ANG – Dutch Ham Radio Station
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Marc Balmer HB9SSB @hb9ssb.bsky.social · 13/07/2026
The new version 1.1.0 of my qth locator app for Android and iOS supports calculating the distance and azimuth to another locator. play.google.com/store/apps/d... apps.apple.com/ch/app/qth-l... Don’t forget to rate it if you like it. #qth #qth-locator #hamradio
play.google.com
qth locator - Apps on Google Play
Display the Maidenhead Locator and Other Information of the Current Location
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Peter, MM9SQL @mm9sql.com · 13/07/2026
Thanks to Tim GW4VXE now have a much better install guide for MacOS on the readme for OscarWatch Tracker github.com/magicbug/Osc...
github.com
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Peter, MM9SQL @mm9sql.com · 10/07/2026
OscarWatch Tracker v0.9.4 is out! 🛰️ ➡️ Windows ARM64 build ➡️ New Pass Elevation Timeline chart ➡️ Next-orbit: faded ground track overlay view ➡️ Fixed frequency "bleed over" when switching satellites Update here: github.com/magicbug/Osc...
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Kees PC1I @pc1i.bsky.social · 08/07/2026
Testing the new toy... Only a tiny bit faster than the old one! 😜
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Kees PC1I @pc1i.bsky.social · 05/07/2026
Oops... I believe I just bought a Bambu Lab P2S... Parliament will have an opinion on it, I assume... 😒
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Kees PC1I @pc1i.bsky.social · 02/07/2026
Another WEBSPY SDR Demo Much improved streaming and audio processing. #sdrsharp #sdr #airspy #airspywebapp www.youtube.com/watch?v=t8gr...
youtube.com
Another WEBSPY SDR Demo
YouTube video by prog
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Kees PC1I @pc1i.bsky.social · 02/07/2026
A demo of an early prototype of a tiny web client for the Airspy SpyServer, with SDR# flavor. Still being polished at the time being. #sdrsharp #sdr #airspy #airspywebapp www.youtube.com/watch?v=nZre...
youtube.com
Airspy Web App
YouTube video by prog
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Pop Shop Radio @popshopradio.bsky.social · 27/06/2026
Poppie goes pirate! Look for her on 6945 khz USB, probably at 0400 UT tonite via the facilities of Band-AId Radio!
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Kees PC1I @pc1i.bsky.social · 26/06/2026
Good news for Windows 10 users who use the Windows ESU program and still have Windows 10 security support. Support has been extended by a year until October 25, 2027. I myself still have it running on an old PC and a shack laptop. www.youtube.com/watch?v=9Uux...
youtube.com
Windows 10 Consumer ESUs Extended to October 2027
YouTube video by ExplainingComputers
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Kees PC1I @pc1i.bsky.social · 26/06/2026
In my street! Really! 🥵
Picture of a fata morgana showing a historic  tall ship going far above the waterline
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G7SOZ @g7soz.bsky.social · 19/06/2026
Having flashbacks of Beowulf Linux clusters 🤣 www.theregister.com/on-prem/2026...
theregister.com
2,000 retired Google Pixel phones get a second life as a private cloud
You might say the system packs two kilapixels of compute
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Johan PA3ANG @pa3ang.bsky.social · 19/06/2026
Weer eens een blogje gepost. Nu over de QMX en mijn QRP Labs verslaving. pa3ang.nl/qrp-labs-qmx/
pa3ang.nl
QRP-Labs QMX – PA3ANG – Dutch Ham Radio Station
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Ron G4LMN @g4lmn.uk · 10/06/2026
I have got my TinyGS LORA satellite receiver back online. app.tinygs.com/station/GE4L...
app.tinygs.com
TinyGS Webapp v20260530
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Peter, MM9SQL @mm9sql.com · 09/06/2026
OscarWatch Tracker v0.8.6 is out! 🛰️ ▶️ Right-click any pass to open a standalone polar sky plot visualiser ▶️ Full settings & transponder database backup import/export ▶️ Massive hot-path memory and rendering performance upgrades github.com/magicbug/Osc...
github.com
Release v0.8.6 · magicbug/OscarWatch-Tracker
OscarWatch Tracker — Version 0.8.6 New Visualiser and Tracking Features Per-Pass Polar Chart Visualiser Added a right-click context menu option to the sidebar pass list to instantly open a dedica...
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EA5JTT @ea5jtt.bsky.social · 04/06/2026
Maximum distances achieved on each band using QRP power levels and FT8. It should be noted that, in ionospheric propagation, higher transmit power does not inherently extend the maximum achievable distance; instead, it increases the likelihood of successfully establishing contacts at that distance.
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Robin Davies @rdavies6.bsky.social · 03/06/2026
This looks really cool and fun! (Thanks to @pe0sat.bsky.social on Twitter for sharing the details) youtu.be/zdJ9Tbm8ALg
youtu.be
Quad RF: A Closer Look
YouTube video by QuadRF
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Peter, MM9SQL @mm9sql.com · 03/06/2026
OscarWatch Tracker v0.8.1 is live! 🛰️ - Dual-radio support for Yaesu FT-991/991A - Native SPID rotator driver - Time scrubbing to preview passes without disrupting live tracking - Localisation framework with Japanese UI Get the update: github.com/magicbug/Osc...
github.com
Release v0.8.1 · magicbug/OscarWatch-Tracker
OscarWatch Tracker — Version 0.8.1 Rig Control & CAT Interfaces Yaesu FT-991 & FT-991A Dual-Radio Support Added dedicated support for the FT-991 and FT-991A as dual-radio-only endpoints. This imp...
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Peter, MM9SQL @mm9sql.com · 02/06/2026
OscarWatch Tracker v0.8.0 is out! 🛰️ This release brings full dual-radio support for uplink/downlink rigs, dedicated drivers for the Yaesu FT-817/818 & ICOM IC-705 Grab the update now! github.com/magicbug/Osc...
github.com
Release v0.8.0 · magicbug/OscarWatch-Tracker
OscarWatch Tracker — Version 0.8.0 Rig Control & CAT Interfaces Dual-Radio Support You can now configure separate radios for your uplink and downlink. This allows for full-duplex operation using ...
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Tom(as) - EA5AKM @tomassenabre.bsky.social · 28/05/2026
Heathkit SB-220 with Eimac 4-400A. New long-term project #hamradio
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PE1RDP @pe1rdp.bsky.social · 28/05/2026
Our ATV repeater PI6EHV has now got an input via hamnet. I just made this PM5544 testcard and the stream via OBS works good. You can find PI6EHV also in twitch as a livestream. #hamradio #hamr #AmateurRadio #television #ATV #repeater #PM5544 #HAMNET #Eindhoven #antenna
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ea3hsl.bsky.social @ea3hsl.bsky.social · 26/05/2026
Freebanders www.youtube.com/live/jEm6Bs7...
youtube.com
RX FREEBANDER
YouTube video by EA3HSL RADIOAFICIONAT
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Peter, MM9SQL @mm9sql.com · 25/05/2026
Looks like most sat ops aren't using TS2000s anymore struggling to find testers!
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F4MAJ - JB - Les F4 - @f4maj.bsky.social · 25/05/2026
📢Je recherche un Kenwood TR-851E 70 cm, même en mauvais état ou pour pièces ! L’état général de l’appareil n’a pas vraiment d’importance : il faut surtout une **façade fonctionnelle**. Le reste peut être HS, incomplet ou en panne. Merci d’avance pour vos retours.
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Kees PC1I @pc1i.bsky.social · 25/05/2026
Is amateur radio dead? Right now, on 11 meters between 27.400 and 27.800, at least 50 SSB frequencies are in use by radio enthusiasts. How sad is it then that from 28300 to 28700 absolutely no one can be heard... I think the difference lies in being enthusiastic. The old grumbler has spoken...
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N6UTC/MW1BQO-Endaf @n6utc.bsky.social · 24/05/2026
Quick: SSTV from the Russian university satellite UmKA-1 (RS40S). In tribute to the 95th anniversary of the birth of cosmonaut Georgi Mikhailovich Gretchko. Broadcast starts: May 24, 01:36 UTC End of Show: May 25, 11:59 PM UTC Frequency: 437,625 MHz Mode : Robot36
SSTV Test Card
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Kees PC1I @pc1i.bsky.social · 23/05/2026
Become a ham YT star! * Its coming! The [TRX]! * [TRX] My Thoughts * [TRX] Not for me! * I bought a [TRX]! * Unboxing [TRX] * Listen to the [TRX]! * [TRX] setup! * [TRX] Never anything else! * What you must know about [TRX] * Why I sold my [TRX]. 5 years [TRX]: Is it still worth it?
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Ben Welsh @palewi.re · 22/05/2026
🍖 Calling all hams. I'm organizing an effort to improve AMSAT's crowdsourced satellite status tracker. We've launched a user survey. Tell us what to improve, and what to never ever change! amsat.org/status
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