iiinova — where your digital self keeps evolving

Reposted by @captain-mushroom.bsky.social

guero @guerogram.bsky.social · 03/10/2026

1960s radio decoding SWRG with TIVAR for Android. Acoustic coupling.

captain-mushroom.bsky.social @captain-mushroom.bsky.social · 02/10/2026

Signal underway at 49° very weak, no decode. Only 1 signal heard during pass. I t was an excellent trajectory, but I may be asking a lot of a 2M QFH at this frequency. I might have to give this event a miss I think.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 02/10/2026

Postie just delivered this little gem Full of useful and practical ideas.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 02/10/2026

Nothing heard from ISS 437.550Mhz on pass 58839

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 02/10/2026

Todays ISS passes for my QTH. 58840, 41, 42 are likely my best shot at a decent decode

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 01/10/2026

All ready for tomorrow. HackRF controlled by Skyroof and a QFH. Let the games commence

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Reposted by @captain-mushroom.bsky.social

Tonalux @tonalux.bsky.social · 01/10/2026

Two classic synthesizers, same era, radically different sound. The reason is topological. The state variable filter is architecturally distinct from the Moog ladder and that distinction matters beyond just vintage worship.

tonalux.org

The State Variable Filter: Why the Oberheim SEM Doesn't Sound Like a Moog

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 30/09/2026

Today I learned: Many UK public libraries also offer electronic access to PRACTICAL WIRELESS using either the Libby app, Borrowbox or Pressreader. Ask at your local library] libbyapp.com www.borrowbox.com

libbyapp.com

Libby

All over the world, local libraries offer millions of ebooks and audiobooks. You can borrow them — for free, instantly — with a library card and Libby: the award-winning, much-loved app for libraries.

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Reposted by @captain-mushroom.bsky.social

Electronic Frontier Foundation @eff.org · 29/09/2026

Stretch your brain muscles with this bundle of programming-themed puzzle games! Pay what you want and benefit EFF, too. www.humblebundle.com/games/progr...

A vibrant promotional graphic features various programming-themed puzzle games, highlighting a bundle sale benefiting EFF.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 30/09/2026

Autumn SPRAT is here chock full of the usual goodies.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 30/09/2026

280.350; 135.150 3 Typhoons in the Mach Loop today. ZK 375,367,379 Destroyers 1,2,3 respectively. (12;15 BST)

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Reposted by @captain-mushroom.bsky.social

OH2GBA @oh2gba.eu · 27/09/2026

Turn the knob, know who you're hearing. otd is a free app for shortwave listeners: it follows your receiver and names the stations on the frequency, live, from #EiBi, #HFCC and #Aoki. Works offline too, for when the internet is down. otd.oh2gba.eu #shortwave #SWL #hamradio #emcomm #sdr #websdr

otd.oh2gba.eu

otd – Turn the knob. Know who you are hearing.

Shortwave station identifier that follows your receiver and names the broadcasters, aircraft, ships and time signals on the frequency, live. Free for Windows, Linux and macOS.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 28/09/2026

Returned from Reading/London. Our great friend Rachel from Singapore brought us 2 kg of Bee Cheng Hiang Bakkwa. A sticky glazed BBQ meat treat to die for. Judicious rationing should get us through until our next trip in Feb '27.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 28/09/2026

On UN-Day, October 24th, 2026, SAQ is scheduled* to spread a peace message to the World on 17.2 kHz CW. Program and transmission schedule: 10:00 CEST (08:00 UTC. SK6SAQ” will be also be QRV More info, QSL address and schedules: www.lwca.net/mb/msg/15427...

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 26/09/2026

Started out with Long Island Iced Tea 2 for 1's at the "Slug and Lettuce" Reading. Ended a little untidily. Off to Cosmos for dinner

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Reposted by @captain-mushroom.bsky.social

Tonalux @tonalux.bsky.social · 23/09/2026

Those jagged wooden panels on studio walls are not decorative. They scatter sound using a number theory sequence devised by Gauss and Legendre in the 1800s and the math explains exactly why they work.

tonalux.org

Quadratic Residue Diffusers: The Number Theory Behind Studio Acoustic Panels

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 23/09/2026

Kalitta Air CRS261 enroute Brussels (BRU) from Cincinnati (CVG) 37000ft at 10miles from my QTH

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 23/09/2026

My mount for the LDG Z817 arrived today. Easy install, everything fits perfectly and I think it looks pretty nifty. £14.95 is a fair price

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 23/09/2026

Never buy a Skoda. The Czech engine light keeps coming on

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 21/09/2026

US Department of Homeland Security Gulfstream 6 inbound. 133.600 Brecon heard, expect Cardiff 119.150 shortly

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 21/09/2026

The Russian "pip" causing QRM on 7.160 this morning. believed to be Northern Caucasus Militray District "AKACIA" QSB on the signal, but at times it had completely wiped out anything below S6

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 20/09/2026

Finally repaired the Longwire working well and matching from 160 to 10M Not a huge difference between this and the inverted vee on receive 1/2

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Reposted by @captain-mushroom.bsky.social

Tonalux @tonalux.bsky.social · 19/09/2026

Turn down your monitors by 20 dB and the bass seems to vanish. That is not your imagination. It is a documented property of human hearing that every mixing decision you make depends on.

tonalux.org

Equal Loudness Contours: Why Turning Down Your Monitors Changes Your Mix

Turn down your monitors by 20 dB and the bass seems to vanish. That is not your imagination. It is a documented property of human hearing that every mixing decision you make depends on.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 18/09/2026

signalshed.com The latest issue Newsletter is now available Page 55 has a very interesting Drone special. Well worth the read

signalshed.com

ENIGMA2000 Number Stations Group

ENIGMA 2000 Home Page

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Reposted by @captain-mushroom.bsky.social

Piratenpartij Nederland @piratenpartij.nl · 18/09/2026

De EU KIDS Act klinkt sympathiek: kinderen beschermen tegen verslavende social media. Maar wij zijn kritisch. Een draadje over waarom dit plan niet alleen voor jongeren verkeerd uitpakt, maar voor iedereen. 🧵

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 17/09/2026

The Greyline is treating me nicely this evening on 40M JS8CALL

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Reposted by @captain-mushroom.bsky.social

Tonalux @tonalux.bsky.social · 17/09/2026

How parallel banks of resonant filters recreate the acoustic behavior of bells, plates and percussive instruments using modal analysis principles.

tonalux.org

Modal Synthesis and Resonator Banks Explained

How parallel banks of resonant filters recreate the acoustic behavior of bells, plates and percussive instruments using modal analysis principles.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 17/09/2026

Supposed to be a lift on...I got nothing. Anyone?

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Reposted by @captain-mushroom.bsky.social

MorseKit - Learn Morse Code @morsekit.bsky.social · 17/09/2026

Your ear is faster than your eyes. High-WPM operators don't read Morse — they hear words. Train ear-first from day one and your speed compounds. That's the whole secret. #morsecode #learnmorse #cw morsekit.com

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 17/09/2026

130.490 (14;08)flight of 2 Qatar Emiri AF Hawks (QEAF) ZB133 and ?? departed Cardiff passing low level Northwest of Swansea heading for the Mach Loop.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 17/09/2026

Had a bit of a faf reconnecting my Solar Activity Monitor to the new isp/modem and of course every time I switched off the modem I was assigned a new IP which killed my ADSB monitor. Sorted now. The SAM works the ADSB works and back in the 180-250 range where it should be. What a faf!

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 17/09/2026

Now in its 10th year. An orchid given to us by a friend gets no love for most of the year but keeps on producing. My Tillandsias died years ago.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 16/09/2026

We changed Internet providers, got rid of the landline and bundled our phones, we now pay almost half the price. The change took place on Monday. This evening our original provider called to see if they could help us to stay with them? You couldn't write a comedy like it.

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Reposted by @captain-mushroom.bsky.social

Tonalux @tonalux.bsky.social · 16/09/2026

Every plugin that does oversampling runs a polyphase filter you never see. Here is how the math works, why it only matters for nonlinear processing and when that "4x oversampling" badge is pure marketing.

tonalux.org

Sample Rate Conversion: The Polyphase Math Behind Plugin Oversampling

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Reposted by @captain-mushroom.bsky.social

Derek Newsome @derek.space · 16/09/2026

NASA released a bunch of 16 and 35mm film engineering footage of the Artemis II launch today. Naturally I knew what I had to do with it.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 15/09/2026

For the benefit of anyone who has ever had a brain fart. 40:1 two stroke mix is 1 litre of petrol to 25ml of 2 stroke oil. In my defence I use the ratio quite rarely, but I could not for the life of me do it in my head and trust it. I have written it on the fuel tank to avoid future embarrassment.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 15/09/2026

246.850 Ninja's 11,12,13 Hawks out of Valley, at play ACM

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Reposted by @captain-mushroom.bsky.social

Tonalux @tonalux.bsky.social · 14/09/2026

Headphones break two assumptions a stereo mix is built on. Here is what specifically goes wrong, what they actually do better than speakers and the order of fixes that matters.

tonalux.org

Headphone Mixing, When It Works and When It Breaks

Headphones break two assumptions a stereo mix is built on. Here is what specifically goes wrong, what they actually do better than speakers and the order of fixes that matters.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 14/09/2026

145Alive has come and gone @bigbernie.bsky.social and myself manned the furthest Western outpost of the activation. A few locals and a contact into Cornwall plus an Olympic quality dive for the mic when an EI popped up only to vanish. Some glitches but couldn't ask for a better activation buddy.

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Reposted by @captain-mushroom.bsky.social

Tonalux @tonalux.bsky.social · 12/09/2026

A single PWM oscillator produces a sound that is mathematically equivalent to two detuned oscillators beating against each other. Here is why the math works out that way and what it means for how you design sounds.

tonalux.org

Pulse Width Modulation: Why One Oscillator Can Sound Like Two

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 12/09/2026

Great seats at the Sherman theatre in Cardiff for Sindhu Vee brilliant comedienne A complimentary dessert at Miller and Carter for our Anniversary and a quick top up of our Asian food must haves from Wai Yee Hong in Bristol. Looking forward to 145Alive tomorrow with @bigbernie.bsky.social

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 10/09/2026

Bit of an anniversary weekend lined up. Starts tonight and ends on Sunday. Fun, Food and Radio. Separate, together and not necessarily in any particular order.

020

captain-mushroom.bsky.social @captain-mushroom.bsky.social · 07/09/2026

Numbers and Oddities Newsletter for August is available online www.numbersoddities.nl/N&O-347.pdf

numbersoddities.nl

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 07/09/2026

We were away for a few days, and came home to find this little guy having a snooze on the wall of one of our out buildings. We have recorded Bechsteins, Horseshoe and Pipistrelles on the property, I think this is the latter.

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captain-mushroom.bsky.social @captain-mushroom.bsky.social · 04/09/2026

278.475 / 135.150 (09:18) Cutlass 12 flying test circuits at Pembrey Range

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