i n d e x
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notes on projects by m.d.


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radioactive | renameseq | rng | softwaredefinedradio | sound | stockexchange | tools | underinfluence | vlf | xterm | 



search:













sdr4:



das ais system laeuft mit Nooelec NESDR SMArt v5  
der dvbt dongle war nicht brauchbar



https://www.aishub.net/ais-dispatcher?tab=linux




##softwaredefinedradio


last edited:February 18, 2023



sdr3:


https://github.com/SignalK/signalk-server


schau mal hier, manche muss man erst kalibrieren für dier richtige
frequenzabweichung ppd und empfindlichkeit. ich habe einen neueren im alugehäuse der ist vorgeeicht.
aber die plastikdinger vorher haben für die 15x MHz auch gereicht.
https://pysselilivet.blogspot.com/2020/05/ais-reciever-for-raspberry-pi-2-channel.html
AIS reciever for Raspberry Pi, 2 channel
pysselilivet.blogspot.com


MMSI ist verschlüsselt, also die strings sind nicht so lesbar aussser das sie mit „!AIxxx anfangen und am ende ne prüfsumme
+ausgeben. opencpn oder avnav können dann die positionen auf der karte anzeigen.



danke holger



https://support.nooelec.com/hc/en-us/articles/360005889913-NESDR-Nano-Series



##linux
##softwaredefinedradio


last edited:February 04, 2023



sdr2:





soft:

opencpn

https://github.com/jvde-github/AIS-catcher

sdrangel

Gqrx SDR




antenne:


Berechnung:

Lambda = c / F

( c = Lichtgeschwindigkeit in KM, F = Frequenz in MHz, Lambda in mm

Eine Antenne Lambda/4 von 8,7cm = 87mm entspricht also einer Wellenlänge 
von 348mm.
Dann ist die Frequenz

F = c / Lambda   =   300000 / 348  = 862,0689MHz

L = c/F; 300000/162(MHZ) = 1851/L4(antenne) = 46cm

cbra mit si einheit: 3*10^8 m/s / (162 * 10^6) 1/s =~ 1.8 m

https://www.entwicklertools.de/tools/technik-tools/antennen-rechner/

Bei dieser Frequenz ist die Antenne in elektrischer Resonanz (der 
Resonanzwiderstand ist am Kleinsten --> Serienresonanz) und kann ein 
Maximum an hochfrequenter Energie abstrahlen.
Das Stehwellenverhältniss (Verhältniss von hinlaufender zu reflektierter 
Welle) ist theoretisch 1. Dies ist beim Betrieb einer Antenne an einem 
Sender extrem wichtig.






hw safes:

https://v3.airspy.us/product/upu-fp162s/
for ais

https://www.wimo.com/de/airspy-discovery
Airspy HF+ Discovery SDR Rx

thx 2 cbra


##softwaredefinedradio
##linux


last edited:January 29, 2023



vlf:




best vlf connector so far,.
grounding case and rec

##vlf 
##radio


last edited:January 29, 2023



minimal_gc_for_rng:

by erich berger

[image]


##tools 
##radioactive


last edited:December 29, 2022



hardware:

[image]

http://www.andregoncalves.info/ag_blog/?page_id=61">http://www.andregoncalves.info/ag_blog/?page_id=61

http://www.cooking-hacks.com/index.php/shop/arduino/pack-radiation-sensor-board-for-arduino-geiger-tube.html">http://www.cooking-hacks.com/index.php/shop/arduino/pack-radiation-sensor-board-for-arduino-geiger-tube.html

http://www.ebay.com/itm/1x-Russian-GEIGER-TUBE-COUNTER-SI-29BG-SBM-20-New-Box-/190723522117?pt=BI_Security_Fire_Protection&hash=item2c6801fe45">http://www.ebay.com/itm/1x-Russian-GEIGER-TUBE-COUNTER-SI-29BG-SBM-20-New-Box-/190723522117?pt=BI_Security_Fire_Protection&hash=item2c6801fe45

http://arduino.cc/en/Main/ArduinoBoardUno">http://arduino.cc/en/Main/ArduinoBoardUno

-

-

nur memo: http://www.libelium.com/wireless_sensor_networks_to_control_radiation_levels_geiger_counters/">http://www.libelium.com/wireless_sensor_networks_to_control_radiation_levels_geiger_counters/

-

http://www.techlib.com/science/geiger.html">http://www.techlib.com/science/geiger.html

vlf:

http://www.techlib.com/electronics/vlfwhistle.htm"> http://www.techlib.com/electronics/vlfwhistle.htm

http://www.vlf.it/easyloop/_easyloop.htm">http://www.vlf.it/easyloop/_easyloop.htm

http://www.techlib.com/electronics/audioamps.html#curiously%20low%20noise">http://www.techlib.com/electronics/audioamps.html#curiously%20low%20noise

http://nova.stanford.edu/~vlf/IHY_Test/TechDocs/AWESOMEDescriptionTalk/HardwareAWESOME.pdf">http://nova.stanford.edu/~vlf/IHY_Test/TechDocs/AWESOMEDescriptionTalk/HardwareAWESOME.pdf





##tools 
##radioactive 
##vlf


last edited:December 29, 2022



sdr:

http://gnuradio.org/redmine/projects/gnuradio/wiki/InstallingGR">http://gnuradio.org/redmine/projects/gnuradio/wiki/InstallingGR

http://sdr.osmocom.org/trac/wiki/rtl-sdr">http://sdr.osmocom.org/trac/wiki/rtl-sdr

http://www.rtlsdr.org/">http://www.rtlsdr.org/

http://www.oz9aec.net/index.php/gnu-radio/gqrx-sdr">http://www.oz9aec.net/index.php/gnu-radio/gqrx-sdr

http://www.superkuh.com/rtlsdr.html">http://www.superkuh.com/rtlsdr.html

----bugs/hacks
http://mono-for-android.1047100.n5.nabble.com/Some-sln-files-opening-as-hex-td5688360.html">http://mono-for-android.1047100.n5.nabble.com/Some-sln-files-opening-as-hex-td5688360.html

 

--satelite images

http://www.oz9aec.net/index.php/gnu-radio/gnu-radio-blog/451-howto-receive-and-decode-noaa-apt-images-with-funcube-dongle-and-gqrx">http://www.oz9aec.net/index.php/gnu-radio/gnu-radio-blog/451-howto-receive-and-decode-noaa-apt-images-with-funcube-dongle-and-gqrx

 

--radar
http://www.virtualradarserver.co.uk/Download.aspx">http://www.virtualradarserver.co.uk/Download.aspx

http://www.rtl-sdr.com/adsb-aircraft-radar-with-rtl-sdr/">http://www.rtl-sdr.com/adsb-aircraft-radar-with-rtl-sdr/




##linux 
##softwaredefinedradio 
##funk


last edited:December 29, 2022



og:


http://www.opengeiger.de/">http://www.opengeiger.de/







https://hblok.net/blog/posts/2011/04/29/analysing-apache-logs-gnuplot-and-awk/">https://hblok.net/blog/posts/2011/04/29/analysing-apache-logs-gnuplot-and-awk/



##tools 
##radioactive


last edited:December 29, 2022



invertierter_transistor_case_pyhaeoki:

memo:

den letzten transistor im setup 180grad herum einbauen, ergibt einen schoenen sound.



##tools 
##radioactive 
##sound


last edited:December 29, 2022



graphics_magic:

 

als lib fuer quantenkino/ghostradio -> laut oliver laeuft die lib effizienter als imagemagick

http://www.graphicsmagick.org/perl.html">http://www.graphicsmagick.org/perl.html

 


##linux 
##tools


last edited:December 29, 2022



gr_comment:

"Ghostradio sounded suitably mysterious and dark"

regine debatty




##ghostradio 
##cryptoart


last edited:December 29, 2022



ghostradio_python_script:

maex@:~/ghostradio/code$ more ghostradio.py 
import numpy as np
import cv2
import os, sys, struct, shutil, time



print "configuring video dev"
# 1 = composite 0 = tuner usw
os.system("v4l2-ctl -i 1")


cap = cv2.VideoCapture(0)

#resolution
ret = cap.set(3,720) 
ret = cap.set(4,576)



timestr = time.strftime("%Y%m%d-%H%M%S")

grname = "gr-random-bin"+timestr


fd = os.open(grname,os.O_RDWR|os.O_CREAT)


while(True):
    # Capture frame-by-frame
    ret, frame = cap.read()

    # Our operations on the frame come here
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

   
    for x in xrange(1, 12):  # zeilen anzahl und position 1 = start 2 =laenge (bei 640x480 ist das theoretisch 1, 479)
        for y in xrange(1, 18):  # scanrange 1 start 2 ende (zb fuer 640x480 ist das dann 1, 640)


                output = gray[x, y]
#               output = bin(gray[x ,y])[2:].zfill(8)
#               print bin(gray[x ,y])[2:].zfill(8)
                output = chr(output)
                os.write(fd, output)  

#               change to this to write down numbers:
#               output = str(output)
#               os.write(fd, output+';')


    # Display the resulting frame
    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

    #checking filesize > 2gb close file open new filename+timestamp    
    statinfo = os.stat(grname)
    b = statinfo.st_size
    b = ((b /1024)/1024)

    if b > 2000:
        os.close(fd)
        shutil.move('gr-random-bin'+timestr,'random')
        timestr = time.strftime("%Y%m%d-%H%M%S")
        grname = "gr-random-bin"+timestr
        fd = os.open("gr-random-bin"+timestr,os.O_RDWR|os.O_CREAT)

# When everything done, release the capture
os.close(fd)
cap.release()
cv2.destroyAllWindows()
maex@:~/ghostradio/code$




##ghostradio 
##linux 
##entropy 
##cryptoart


last edited:December 29, 2022



code_von_franzi:

code von franzi



imagemagick



#!/usr/bin/perl

use Image::Magick;



$zaehler = 2;
$spalte = 0;
$zeile = 0;
$e = 1;

for ($i = 0; $i <= 255; $i++)
  {

my $image = Image::Magick->new;

$image->Set(size=>'256x256');
$image->ReadImage('xc:white');
for ($sp = 0; $sp <= 256*256; $sp++)
  {
            if ($spalte == 256)
                 {
                  $spalte = 0;          # AN DEN ANFANG ZURUECK
                  $zeile = $zeile + 1;  # EINE ZEILE RUNTER
#                 print " Zeile $zeile / 256 \t Nr. $i / 255 \t $farbe \n";
                 }
#        $e1=1/$e;
#        $e=1/(1+$e1);
        $e=1/$zaehler;
#        print "$e\t1/$zaehler\n";
        $rot=substr($e,8,2);
        $gruen=substr($e,10,2);
        $blau=substr($e,12,2);
        $farbe = "#".$rot.$gruen.$blau;
        $image->Draw(primitive=>'point', fill=>"$farbe", points=>"$zeile,$spalte");
        $spalte = $spalte + 1;
        $zaehler = $zaehler + 1;
        # print ">>>$e>$rot--$gruen--$blau>$farbe>>$spalte,$zeile\n";
  }
 $zeile = 0;
 #$image->display();
 $image->Write("image_1n65k$i.jpg");

 print "image_65k$i.jpg\n";
 }






##ghostradio 
##linux


last edited:December 29, 2022



antenna_for_athmospheric_vlf_arctic:

http://www.physics.otago.ac.nz/space/AARDDVARK_pictures.htm

 

http://www.physics.otago.ac.nz/space/AARDDVARK_homepage.htm



##vlf 
##radio


last edited:December 29, 2022



aircraft_radar_application:

https://github.com/antirez/dump1090


##linux 
##funk 
##radio


last edited:December 29, 2022



dev_random:

Do you have a radio? Tune it in between stations. Music is highly reproducible,
and although DJ's may blabber at random they may be recorded (so reproducible)
and any radio station in general is duplicated with care in the whole area of
broadcast. Do not use the FM tuner of your radio, because FM is based on a beacon
signal with the sounds wrapped around it -- in other words, the radio can recognise
absence of a station and refuse to tune in, or adapt tuning to a nearby station.
You want to use the AM tuner, which does not have these problems.


http://www.cypherpunks.to/~peter/06_random.pdf">www.cypherpunks.to/~peter/06_random.pdf
http://http://www.linuxfromscratch.org/hints/downloads/files/entropy.txt">http://www.linuxfromscratch.org/hints/downloads/files/entropy.txt

the best random number generators use radioactive decay as an entropy source

gpg definition:

http://tools.ietf.org/html/rfc4880">http://tools.ietf.org/html/rfc4880

das ist schon mal ein guter weg
http://sublimated.wordpress.com/2007/08/28/not-enough-random-bytes-available/">http://sublimated.wordpress.com/2007/08/28/not-enough-random-bytes-available/

/dev/random wird verwendet

maex@bro:~$ cat /dev/random
)����i���1����9�Ѭ$SLu�8y�;��_�M�>��D�HUb�1�\224bQ�?����\224���A|�?d������\206��\214�a�����.�
+��Dc��@
l���o�g�
��\220�@�����,�I@���n�(b#�m���W��T
M_��ԧ�'�tW�~    k��+9'�'?�so��.���\223���L��_U{-������^�v��KlR-��q��\212������^C
maex@bro:~$




##entropy 
##noise 
##rng


last edited:December 29, 2022



pentagram_test:

some pics klick





[image]

[image]

[image]

[image]


ghostradio
##ghostradio


last edited:December 29, 2022



ghostradio_antenna_layout:

[image]

new antenna developed 11 2014
lambda1/4 antenna in the center (probably with black cable)


ghostradio entropy cryptoart
##ghostradio


last edited:December 29, 2022



web_sdr:

http://websdr.ewi.utwente.nl:8901/

 

8422.00

 

9240.02

softwaredefinedradio
##softwaredefinedradio


last edited:December 29, 2022



neue_links_zur_psi_forschung:

http://vimeo.com/49872335">http://vimeo.com/49872335

http://wwwu.uni-klu.ac.at/gsuess/bewusstseinpsy/RonaldWeigl.htm">http://wwwu.uni-klu.ac.at/gsuess/bewusstseinpsy/RonaldWeigl.htm

http://derstandard.at/1326504254251/Umfrage-Zufaelle-sind-nicht-immer-rein-zufaellig?_artikelIndex=4">http://derstandard.at/1326504254251/Umfrage-Zufaelle-sind-nicht-immer-rein-zufaellig?_artikelIndex=4

http://derstandard.at/1326504250904/Zufall-Wenn-der-Wuerfel-rollt">http://derstandard.at/1326504250904/Zufall-Wenn-der-Wuerfel-rollt


ghostradio
##ghostradio


last edited:December 29, 2022