16GB USB Memory stick with Live Ubuntu HF Noise monitoring System software. (Live with persistence)

16GB USB Memory stick with Live Ubuntu HF Noise monitoring System software. (Live with persistence)
Brand: Giga
Availability: 3
Price: R295.00
Ex Tax: R295.00
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16GB USB Memory stick with Live Ubuntu 16.04 HF Noise monitoring system.

Screenshot of Noise monitoring system

How dose the HF Noise Monitoring system work

  • The HF noise monitoring system takes a 1Mhz bandwidth samples every 2 minutes using the rtl_power utility and save the measurements in a CVS fie.
  • The 2 minute scheduling is done with a Crontab calling a script in the hf_noise directory.
  • The RF Samples is taken at a 1Mhz bandwidth from 1M to 30Mhz therefore 29 of  the CVS files is created and gets appended as the measurements is made.
  • A Perl script utility is the executed from a cron scedular  to read the 29 CSV files and import there data into a RRD database.
  • The RRD database then gets interrogated by another Perl script scheduled by a cronjob to generate the graph Images and and html files and get saved in the Apache web server graph directory witch is the exposed on http://localhost/hf_noise/graph/1Mhz_Power.php
  • Link to Live system 
  • The RRD database will then create the Hourly, Daily,Weekly,Monthly and Yearly averages and   then generates the graphs every 2 minutes according to the parameters passed to Database.
  • The generated graphs is then displayed in a php page via a Apache web server with an php plugin on the following url http://localhost/hf_noise/graph/1Mhz_Power.php.
  • Trends can then be seen on a graphs over time.
  • The heat map is generated by a python script from different CSV files and is saved in the /var/www/hf_noise/images directory and can be accessed on the local web server on the following url http://localhost/hf_noise/images
  • Link to live system

List of Software on Memeory Stick

  • Noise montoring system with added software below
    1) APRX  AFSK and APRS encoding decoding command line utility
    2) CW a CW generator
    3) CWCP A Morse code tutor
    4) Direwolf  this is a Beacon and telemetry generator and digipeater
    5) Chirp a VHF / UHF radto programmer
    6) FLdigi Digital mode application
    7) Gpredict   Satellite tracking software
    8) gqrx-sdr   SDR software
    9) Grig Cat radio Controle
    10) mutimon afsk decoder
    11) Qtel echolink aplication
    12) svxlink-server (echolink server)
    13) wsjtx wisper application
    14) xastr APRS mapping software

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