Some audio recordings of the signals here: www.dropbox.com/scl/fo/8bnrj...

Spotted on the 20m band (14205 USB) - Regular (10 min) beacons that look a lot like LoRa (well, chirped modulation of some kind), but are contained within a 3 kHz channel. The beacons seem to alternate between data packets and just FMCW. Seen anything like this @destevez.net ?

Only a few packets from you! RS41Tracker only uploads about one out of every 30 packets... I need to poke the developer and ask them to enable uploading of everything, like radiosonde_auto_rx does.

Seems to be a KNMI site, and KNMI even run their own radiosonde_auto_rx receiver and submit data to sondehub.org :-) sondehub.org/X1422335

Very chatty New Holland Honeyeaters in the backyard!

ARDF at Mt Gambier - by Mark VK5QI and Grant VK5GR - AREG September 2025 Presentation YouTube video by Mark Jessop

Last night I gave a presentation on go at the Australian Foxhunting (Amateur Radio Direction Finding) Championships - It's now up on YouTube here: www.youtube.com/watch?v=Mz0Y...

I love this set! It's like I turned up to an A&B show :)

Attempting to make a 'press-fit' 4x BNC plug for easier band changes on my KrakenSDR DoA system. First step is to try out disassembling a BNC plug and using just the inner bit. Made a 3d-printed holder for it. Seems to work OK!

The big koala is definitely creepy looking. Those eyes...

Down at Mt Gambier, SA, having a go in the Australian Foxhunting (Radio) Championships! My combination of KrakenSDR and beam-out-the-window setup is doing fairly well! Mt Gambier has brought on the weather though, and it's been very very wet...

Ohhh the habanero sauce is pretty good isn't it!

Playing with one of these cheapo 'EMF' meters. Meter starts blinking scarily with only about 40mW/m^2 incident power density. For reference, at the frequency I was transmitting on, the General Public limit (ARPANSA RPS S-1) is 2000 mW/m^2. No wonder these things make people freak out.

Attempting to push my KrakenSDR-based Foxhunting (ARDF) system up to the 23cm (1296 MHz) band. Teeny DoA array made from PCB and SMA sockets. Surprisingly (to me) it works! Unfortunately a harmonic of the 28.8 MHz RTLSDR clock falls right on 1296 MHz, which will limit sensitivity.

It is indeed extremely unpleasant outside.

webhorus - A browser-based Horus Binary decoder! YouTube video by Mark Jessop

Check out webhorus - a Horus Binary high-altitude balloon telemetry decoder in a browser! Thanks to @xssfox , this supports audio decoding, and now even RTLSDRs via WebUSB! www.youtube.com/watch?v=TCGZ...

The sondehub.org receiver network has been watching!

Truly a terrible day...

times are tough yall, but we are tougher! stand strong and trans rights

A black & white cat photographed from above, looking up at the camera, blurry as the cat is jumping upwards.

Peppy in motion. (Being annoying as usual)

Transporter 12 Launch, 14th January 2025 YouTube video by Mark Jessop

Finally got to see a rocket launch! Transporter 12, viewed from West Ocean Avenue near Lompoc.
youtu.be/sNXiFN2nm3Q

Awesome set!

Having just finished watched Squid Game season 1... Why the hell does this show have a McDonalds tie in meal?!!?!?

Oh shit they did a rendition of "Remember this Name" (probably one of the most incredible music moments in the game) AND they did the final 'catch' music!

【吹奏楽】ゼルダの伝説 ティアーズ・オブ・ザ・キングダム YouTube video by senzoku game music brass

Amazing renditions of some Tears of the Kingdom music by a wind orchestra (senzoku game music brass) @l-train.bsky.social
www.youtube.com/watch?v=KTx0...

It certainly looks like an angry teenager!

While the fixes to our RFI installed by SA Power Networks have certainly improved matters, we're still seeing residual RFI showing up on hot days. Whether this is some other mechanism, or just from a different like I'm not sure yet.

This is probably the best way I can explain it. 19 kV AC couples capacitively through the insulators. Ideally this would just be grounded, but if the electrical connection between the insulators is poor, it can result in flashover and broadband EMI.

Another look at the installation of these. You can see the tech getting ready to insert the wire brush (already dipped in grease) into one of the joints.

Power-line RFI getting fixed at AREG's Remote HF Receive Site YouTube video by Mark Jessop

We had another visit by SA Power Networks to AREG's remote site today, to install fixes for our power-line noise issue. Technicians inserted wire brushes into the insulator joints, which had an instant effect on the noise! Thanks SAPN! www.youtube.com/watch?v=-5R_...

"What are you looking at?" SCREEEEECH