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Oona Räisänen (windytan)
Lives in Helsinki
6,163 followers|10,659,614 views
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Alliaria petiolata. (bokeh!)
litulaukka (fi); löktrav (sv); jack-by-the-hedge (en)
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Erika Berkenhof's profile photo
 
Oh beautiful, We call it Look-zonder-look
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Dominik Klein's profile photoDavid Richfield's profile photoWerner Joubert's profile photoMatz Johansson Bergström's profile photo
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Think about the time in future when the things we now use daily will seem so retro': cars, non-neurally-connected-computers, cellphones, std household appliances.
Btw, love the max-headroom pic!


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Trackers and bank accounts
A Finnish online bank used to include a third-party tracking script in all of its pages. Ospi first wrote about it (in Finnish) in February 2015, and this caused a bit of a fuss. The bank responded to users' worries by claiming that all information is colle...
A Finnish online bank used to include a third-party tracking script in all of its pages. Ospi first wrote about it (in Finnish) in February 2015, and this caused a bit of a fuss. The bank responded to users' worries by claimi...
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Jarkko Yli-Heikkuri's profile photo
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What kind of filter would you use to bandpass the signal centered at +50 kHz?
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Daniel Yount's profile photoColby Boyer's profile photoAndy Sloane's profile photoOona Räisänen (windytan)'s profile photo
8 comments
 
Thanks for the help, I solved this.
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Wanted: recordings of C64 (or similar) data cassettes for testing my new decoder. Any format will do, preferably not very compressed. Damaged and unreadable tapes preferred.
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Andreas Höfler's profile photoFlorian Loitsch's profile photoDominik Klein's profile photoDec Kelly's profile photo
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I might have some tapes still, but honestly I no clue as to where they might be. The same goes for my ZX81...
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Improved redsea quite a bit during the weekend. More resistant to low SNR. Also more infodump in the blog post.
redsea is a command-line RDS decoder. I originally wrote it as a script to decode RDS from demultiplexed FM stereo sound. Later I've experimented with other ways to read the bits, and the latest addition is to support the RTL...
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Dec Kelly's profile photoEkki Plicht's profile photoStefan Marx's profile photoMichael Ball's profile photo
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Pirate FM stations tend to have more interesting RDS text than legal/regulated broadcasters.
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In her circles
35 people
Have her in circles
6,163 people
Ruben Campos-Arias's profile photo
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Mika Urtela's profile photo
Eliasur Rahman's profile photo
Kalle Pietila's profile photo
kyurim rhee's profile photo
Teemu Laitila's profile photo
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5 communities
 
Wanted: OSX replacement for Thunderbird that supports Enigmail/GPG and has a "white text on dark" mode.
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Martin Loeschner's profile photoYves-Alexis Perez's profile photoAnt Kenworthy's profile photofi nurr's profile photo
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fi nurr
 
+Ant Kenworthy​ 2015 and still using POP? Tsk ;)

Edit: offlineimap or mbsync together with msmtp are usable tools for "offline" email use.
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The mathematics and properties of discrete signals and quantum mechanics have intriguing parallels. Take, for instance, Heisenberg uncertainty principle in QM and Gabor(-Heisenberg) limit in signal processing. Or the fact that the quantum state of an isolated system is a complex-valued wave function; and that the position and momentum of a particle are related through a Fourier transform.
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Peter Barrett's profile photoROBIN Guillaume's profile photoEmanuele Ziglioli's profile photo
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That's cool man, no grudge. Yours is a valid point. +Oona Räisänen 's intuition and almost instinctive feel for this field is amazing though, have never seen anything like that
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Building a half-wave dipole. What's the effect of the air gap (feed gap)? How wide should it be in relation to the elements? Does it matter?
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Marcelo Bornscheuer (XQ6BQ)'s profile photoWVØH Myron's profile photoOona Räisänen (windytan)'s profile photoBrian Morrison's profile photo
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Feel free to ask about baluns if you want to ☺
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I've always been INTP, but now I'm getting INFP. (Emotion chip?)
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Erika Berkenhof's profile photoTomáš Mládek's profile photoNoah Friedman's profile photoJussi Lahtinen's profile photo
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+Tomáš Mládek Only if you can't speak...
 or write, but then you probably wouldn't able to do the test either.
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Mike Rooke's profile photoChristopher Hewitt's profile photoAntti Kivivalli's profile photoHakan Kocaman's profile photo
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Almost 25 years ago I attended a seminar on magnetic stimulation of the cortex. That time the gadgets were new and the US models came with instructions to use hearing protector while using it on a patient...

The huge electric pulse in a coil caused only a small snap because of the manufacturers warnings a Finnish doctor had prepared a paper after measuring the sound a magnetic stimulation coil could produce. He used a normal dynamic microphone in his measurements...

https://youtu.be/B_olmdAQx5s
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I wrote a little RDS decoder for RTL-SDR (Linux/OSX).
I originally wrote redsea as a script to decode RDS from demultiplexed FM stereo sound. Later I've experimented with other ways to read the bits, and the latest addition is to support the RTL-SDR television receiver via the r...
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Andrea-Patrizia Bauchinger (Arthemis300)'s profile photoAndrew Kohlsmith's profile photo
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People
In her circles
35 people
Have her in circles
6,163 people
Ruben Campos-Arias's profile photo
peter christensen's profile photo
Mika Urtela's profile photo
Eliasur Rahman's profile photo
Kalle Pietila's profile photo
kyurim rhee's profile photo
Teemu Laitila's profile photo
Tânia Figueiredo's profile photo
Raphaël Toussaint's profile photo
Communities
5 communities
Basic Information
Gender
Female
Story
Tagline
Signals & electronics hacker.
Introduction

A self-taught signals hacker from Helsinki, Finland. CCC and 44CON speaker. Studies computers. Fond of electronics, mysteries, codes and ciphers, and vintage tech.

Absorptions is a blog about my hobbies.

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Currently
Helsinki