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Lët'z Hack! D'Hacker-Emissioun vu syn2cat op Radio ARA
Meetings: on recording day (see respective shows)
Type: media

Status: running
Members: Macfreak109, Mich, Prometheus, Ritchief, Tschew, Azunix
Contact Person: SteveClement (mail)
QrCode: QR-7af88966e1c4e4bc98d594519682420e.png


Lët'z Hack!

Important Stuff

If you contribute to an episode WATCH the page (use the wiki function at the top to get e-mail updates about the page.



Adding a Show? Please use the RadioShow form, name it RadioShowXY and set an accurate topic.
If you're not just yet sure about your show, please add your idea to the topics section first.

Pool o' Topics

Collect ideas here, create a show from them once you see fit.

  • Luxembourgian Blogosphere, TwittoSphere et al. (Invite bloggers, cf. Kwisatz' crawler graphics)
  • Social Networks
  • hacker Conventions
  • 8-bit, chiptune, festivals
  • Luxemburg, Überwachungsstaat?
  • Theoretical Terror Attacks, .lu centric
  • Lockpicking, the Audible guide
  • Internet encryption for everyone smtpS, wwwS, imapS, pop3S etc...
  • Luxi Internet Memes
  • G.R.L Luxembourg
  • C3L
  • Arrrduino, Pirates and NOT the Carribeans
  • Anti-Virus Software
  • Killerspiele, die Kids laufen Amok
  • Software Patente und Patente im generellen
  • Biometrie
  • Homebrew
  • Hacking Foods (Jo)
  • Cyberwar & Hacktivism [1] [2] [3] (locked)


List of artists and played songs


Please add only artists, not single albums. In a second step you should then select specific tracks and add them to a show. See RadioShow1 for an example. Please make sure we have the right to play that music. Mail the musicians if you're unsure about the licensing.

Unknown License

MySpace stuff (probably commercial)

More Resources


  • Digitalism
  • DaftPunk
  • Portishead
  • Radiohead
  • Massive Attack
  • Psilodump
  • Placebo
  • Pink Floyd
  • Weird Al Yankovic
  • Leftfield
  • Fat Boy Slim
  • Mr. Oizo (Flat beat \w Flat Eric)

More Content

Other things we could do include

  • have people email their favourite electronic songs to radio_AT_hackerspace_DOT_lu
  • interviews with various people and organizations
  • reports from Hacker Conventions
  • interactive call-ins
  • debates

Similar Shows & Radio-Stations

BTW : Gaston Klares is a friend of mine...he's also a great hacker! ;-) --Macfreak109 11:48, 27 June 2009 (UTC)

Preparations - a Guideline

Before the Show

A good preparation on the Topic that will be discussed is of utmost importance as the moderator of the moment will need to ask Questions on the various topics.

Gloomy answers without facts aren't really interesting for the listeners (too complex answers neither, so balance it)

During the show we will need a way of communication. A piece of paper and a black marker are ideal.

Also handy if you want to note something down you don't want to forget.

Write down keywords, NOT entire phrases. Believe us it will only confuse you and you will start stalling and people will notice you read off a sheet of paper.

Mic check

check, check Mic? Dude, is that thing on?

Yep and you've #failed on national radio :)

A few tips about becoming a Radio Star (sorry Eldoradio, if you claim rights on that so be it)


If you speak into a Mic be yourself. Speak normally. Due to the nature of our program you can talk to the moderator as if you would know him for years. No special intonation needed, no grand-ducal form has to be applied, be yourself (or practice)

You don't need to yell at the Mic, with as little as one fist away from it you will be heard loud and clear. Also try and keep the same distance from the Mic at all times (otherwise Leveling your voice will annoy the operator)

Articulation is very important, you can practice this by exaggerating pro-noun-ci-ation but do this during dry runs otherwise you sound like broken speech synthesizer.


Should 'yourself' be: extremely shy or absolutely CRAZYYYY - try and practice in front of a mirror a few line until you get the drill and feel confident enough (have cooled down)


It seems at least one person has to moderate the talkers (think of it as a switch board)

If ALL speak together (full-duplex) #fail will occur.

So everyone needs to wait her turn. But you can time yourself and maybe sync (via eye-contact or paper-sheet) with the current-speaker and add to the coversation. (This is basically where it differs a bit from a regular conversation between pals)

Good practice for moderators

  • try to give a short overview of the topic before your "guests" get into it a little deeper
  • after an information block, it's always good to summarize the things that were said and give a little outlook of what will come next (after the next song, for example)
  • imagine your listeners are blind and have no arms. The only sense they can use is hearing. So you need to guide them trough the rough sea/the labyrinth of information that lies before you. Fortunately, if you are well prepared, you might have a "roter Faden"/map you can hold on to navigate the labyrinth/the rough sea.
  • two person moderation is fun. (A: An dir lauschtert Lët'z hack um Radio ARA op de Frequenzen 103,3 B: an 105,2 an um livestream op But don't overegg the pudding and do it too often.
  • Don't use the same boring phrase over and over. (Dir sidd ageschalt um Radio ARA op de Frequenzen 103,3 an 105,2 an lauschter d'Emissioun Lëtz Hack. An daat do waar ...) Try to mix up these sentences in order to make the show more colorful.
  • However, catchphrases may be fun.
  • Moderation should be personal. Be yourself and not the OMGLIFEISSOAWESOMEANDWEAREPLAYINGONLYTHEGREATESTHITSFORYOU guy of your local commercial station or the we are now listing to a 1824 recording from the London Philharmony Orchestera of Bachs 2nd Symphony state funded social cultural station guy.
  • Don't talk about technical problems too long. Often it's better not to say something than explaining it all. However, if you made a big mistake, you should excuse yourself, blame it on the computer in the studio or the microwaves from the kitchen underneath and carry on.
  • If you already know the topic of the next show, announce it!


Playing relatively unknown songs? Don't just stop at that. Tell a little something about the artist and his song. Where's the artist from? How does he create his music? What year is the song from? Has it inspired any other songs? Has it been on a movie soundtrack? What license does it use? (CC?)

After the Show

Once the show is over make sure you have a Backup of the entire show so we can put it online on our LetzHack page.

Keep in mind that commercial songs will have to be removed from the podcasts though!


If the show needs to be cut, encode it at 256 kb/s with CONSTANT BITRATE, as otherwise Germain cannot properly use his toolset which does not support VBR. The replay gain option calculates the volume for radio transmission (AFAIK). (The recording device in Studio 2 is set to limit the recording to -2.0 dB, so it would be a good idea to amplify the recording to 0dB.)

-$ lame --replaygain-accurate -h -b 256 --cbr in.wav LetzHack_epX_2010mmdd.mp3

When encoding for the podcast: use the artist, title and date flags! (is there a podcast genre now?--Tschew 08:02, 1 October 2009 (UTC))

-$ oggenc in.wav -o LetzHack_epX_2010mmdd_podcast.ogg -d 2010 -a syn2cat -t "Lët'z Hack! episode X - title of episode"
-$ lame -V 7 -v -h --ty 2010 --ta syn2cat --tt "Lët'z Hack! episode X - title of episode" in.wav LetzHack_epX_2010mmdd_podcast.mp3

You can also use dir2ogg to convert mp3 files to ogg. (mind that the dir2ogg version on the server doesn't work O.o)
Tagging ogg files is a bit of a hassle though:

~$ echo "ARTIST=syn2cat Hackerspace
> ALBUM=LetzHack Radioshow
> TITLE=Let'z Hack episode X - title of episode
> DATE=2010-mm-dd" | vorbiscomment -w in.ogg LetzHack_epX_[date]_podcast.ogg


If you have shell access, upload the podcast (otherwise ask somebody else). Create a new folder, put the RELEVANT two files (podcast mp3 and ogg of current episode) there and use

#become www-data user
#go to wiki dir
php /var/www/ $foldername 

to add the files to mediawiki.

Go to the imported files and add these properties (mind the filetype!) in order for the files to appear in our podcast feeds:

[[Is PodcastFile::true| ]]
[[Is FileType::ogg| ]]

Then, add the podcast filenames and release date to the wiki page semantic info of the episode you've just worked on. (use a previous show as your guide for the correct syntax).

Finally, clear the cache for the radioshows page: Clear NOW

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