Azusa | Nagasawa

(Software Defined Radio)
azusa nagasawa

Summary
With A Good USB TV Dongle (For 10$ Or 30$) You Can Scan, Listen... Radio Frequencies !
FM, AM, NFM, GSM... | Satellites, Planes, Boats, Trains, Cars, Pagers, Taxis...

(USB Dongle It's One Thing, The Antennas Another)

(You Have Some Links And Quick Start Guides Below...)


The video
Here, A Video To Show How To Use And Some Basic Uses (In 2014 / 2015)
(Sorry, In This Video, I Dont Use The "Squelch" Option In "SDR#")
(If You Want Avoid Undesirable Noises Between 2 Transmissions, Check/Adjust "Squelch")



Miscellaneous SDR Links
(If URL [or webiste] Seems Down, Try The "WayBack Machine" => https://web.archive.org/)

("xdeco.org" And "rtl-sdr.ru" Websites Seems Down)


Quick Start Guide:
A Fast Installation On Linux (Debian/Ubuntu)
  1. Buy A Compatible SDR USB Dongle (Based On The Realtek RTL2832U)
    [Compatible Tuners: E4000, R820T, R820T2, R828D, FC0013, FC0012, FC2580, ...]
    See Compatible Tuners/Dongles: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

  2. Open A Shell And Install SDR Tools (Here Only "rtlsdr", "gqrx" And "cubicsdr") With This Commands :
    #> apt-get update
    #> apt-get install rtl-sdr librtlsdr-dev gqrx-sdr cubicsdr

  3. Blacklist Module(s) :
    - Edit The "/etc/modprobe.d/blacklist.conf" File (Here With "Vim" But You Can Use Any Editor) :
    #> vim /etc/modprobe.d/blacklist.conf
    - Add At The End Of File This Lines (You Can Add Others If You Want) :
    blacklist rtl8xxxu
    blacklist dvb_usb_rtl28xxu
    blacklist dvb_usb_v2
    blacklist rtl_2830
    blacklist rtl_2832
    blacklist r820t
    - Save And Close "/etc/modprobe.d/blacklist.conf" File
    - Reboot PC

  4. After Reboot, (If Unplugged) Plug Your SDR USB Dongle
    To Watch Your SDR USB Dongle, enter command :
    #> lsusb | grep -i rtl
    [ OR ]
    #> dmesg
    [ OR ]
    #> dmesg | grep -i rtl

  5. And Just Start "gqrx" (From A Shell Or Menu)
    [If You Want Reset "gqrx" Configuration, Run This Command On A Shell "gqrx -r"]

  6. If You Prefer, Instead Of "gqrx", You Can Also Start "cubicsdr"...

  7. For More..., Install GNURadio:
    #> apt-get install gnuradio gnuradio-dev

Quick Start Guide:
A Good Installation On Windows

Azusa | Nagasawa

**Chill Phimmoi: The Ultimate Guide to Relaxation and Calm** In today's fast-paced world, it's easy to get caught up in the hustle and bustle of daily life. With constant demands on our time and energy, it's no wonder that many of us are feeling stressed, anxious, and burnt out. But what if there was a way to slow down, unwind, and find a sense of calm and tranquility in the midst of chaos? Enter Chill Phimmoi, a philosophy and lifestyle that promises to help you do just that. **What is Chill Phimmoi?** Chill Phimmoi is a mindset, a way of being that encourages you to slow down, relax, and let go of stress and anxiety. It's about embracing a more laid-back, easy-going approach to life, and finding joy and contentment in the simple things. Whether you're feeling overwhelmed by work, relationships, or just the general demands of modern life, Chill Phimmoi offers a refreshing alternative. **The Principles of Chill Phimmoi** So, what are the core principles of Chill Phimmoi? Here are a few key tenets: * **Take it easy**: Don't sweat the small stuff. Life is too short to get worked up over things that don't really matter. * **Be present**: Focus on the moment, and let go of worries about the past or future. * **Find joy in simplicity**: Appreciate the little things in life, and find happiness in everyday moments. * **Practice self-care**: Take care of your physical, emotional, and mental well-being. * **Let go of expectations**: Don't put too much pressure on yourself or others. Just go with the flow. **How to Incorporate Chill Phimmoi into Your Life** So, how can you start embracing the Chill Phimmoi lifestyle? Here are a few tips: * **Start small**: Begin by taking a few deep breaths, and focusing on the present moment. Take a short walk outside, or practice some gentle stretches. * **Prioritize self-care**: Make time for activities that nourish your body and soul, such as meditation, yoga, or reading. * **Simplify your life**: Declutter your living space, and get rid of things that are no longer serving you. * **Connect with nature**: Spend time outdoors, and appreciate the beauty of the natural world. * **Practice mindfulness**: Pay attention to your thoughts and emotions, and let go of negativity. **The Benefits of Chill Phimmoi** So, what are the benefits of embracing the Chill Phimmoi lifestyle? Here are just a few: * **Reduced stress and anxiety**: By letting go of worries and focusing on the present moment, you can reduce feelings of stress and anxiety. * **Improved mental health**: Chill Phimmoi encourages self-care and mindfulness, which can help improve mental health and well-being. * **Increased productivity**: By prioritizing what's truly important, you can become more focused and productive. * **Better relationships**: By being more present and engaged with others, you can build stronger, more meaningful relationships. * **Greater sense of calm and well-being**: Chill Phimmoi is all about finding peace and contentment in everyday life. **Chill Phimmoi in Practice** So, what does Chill Phimmoi look like in practice? Here are a few examples: * **Taking a relaxing bath**: Fill your tub with warm water, add some calming essential oils, and soak for a while. * **Practicing yoga or meditation**: Take a few minutes each day to focus on your breath and calm your mind. * **Going for a walk**: Take a leisurely stroll through your neighborhood or a nearby park, and enjoy the sights and sounds. * **Reading a book**: Get lost in a good book, and let the stresses of the day melt away. * **Simply doing nothing**: Sometimes, the best thing to do is simply to sit back, relax, and do nothing at all. **Conclusion** In today's fast-paced world, it's easy to get caught up in the hustle and bustle of daily life. But by embracing the Chill Phimmoi lifestyle, you can find a sense of calm and tranquility, even in the midst of chaos. By prioritizing self-care, simplifying your life, and focusing on the present moment, you can reduce stress and anxiety, improve your mental health, and find greater joy and contentment in everyday life. So why not give it a try? Take a deep breath, relax, and let the Chill Phimmoi lifestyle transform your life. No input data

Get Your SDR USB Dongle "Frequency Correction (ppm)" (2 Methods)
(Every SDR USB Dongle Has It's Own "Frequency Correction (ppm)" Value)

  1. Follow A "Quick Start Guide" To Setup Your Dongle/Software... (Depends Of Your OS, See Before)
    [And (If Unplugged) Plug Your SDR USB Dongle]

  2. Method 1: With "rtl-sdr":
    - If You Are On Windows, You Can Download From This Link (Download The Latest Version 32 Or 64 Bits):
    https://downloads.osmocom.org/binaries/windows/rtl-sdr/
    (And Unzip Anywhere)

    - If You Are On Linux (Debian/Ubuntu), Just Install Package With Shell Command :
    #> apt-get install rtl-sdr

    - Now Open A Shell (Or "cmd.exe" For Windows, And Go To Unzipped Binaries Folder) And Enter This Command :
    #> rtl_test -p

    - Wait Some Minutes (At Least 5 Or 10 Minutes) And Watch Results (You Can Stop With "CTRL+C") :
    On Results You Have Some "cumulative PPM: XX" Values (XX Is A Number, And Can Be A Negative Number)
    To Find Your SDR USB Dongle "Frequency Correction (ppm)":
    Keep Most Frequently "cumulative PPM: XX" Value (Or Make An Average Of Last "cumulative PPM: XX" Values)

    - In The Example Below, After A Few Minutes, I Decide To Keep The Frequency Correction (ppm) => "51":
    azusa nagasawa

  3. Method 2: With A Software (Maybe More Or Less Precise):
    - If You Are On Windows Start "SDR#", But If You Are On Linux Start "gqrx"

    - Put The "Frequency Correction (ppm)" To "0" On Your Software (Search On Software Parameters...)
    [On Windows And "SDR#", Click On "Gear" Icon On Top Named "Configure Source", You Have "Frequency correction (ppm)"]
    [On Linux And "gqrx", Select "Input controls" Tab On Right, You Have "Freq. correction"]

    - Enter A Precise And Fixed Frequency That You Know (A Fixed Frequency From : FM Radio, Narrow FM, AM...)
    [If You Don't Know A Precise Fixed Frequency, Make An Internet Search To Find One]

    - Now Adjust The "Frequency Correction (ppm)" From Your Software Parameters, To Center On The Fixed Signal
    [And Find Your SDR USB Dongle "Frequency Correction (ppm)"]

Listen FM Radio (From A Linux Shell) (2 Methods)
  1. (If Unplugged) Plug Your SDR USB Dongle

  2. (If Not Installed), Install Packages:
    [ "rtl-sdr" For "rtl_fm" command, "sox" For "play" command, "alsa-utils" For "aplay" command ]
    #> apt-get install rtl-sdr sox alsa-utils

  3. Method 1: Run Command (Output Audio With "play"):
    [ Replace "-f 99.6M" By A FM Radio Frequency, And "-p 51" By Your PPM Correction ]
    #> rtl_fm -f 99.6M -M wbfm -s 200000 -r 44100 -p 51 | play -t raw -r 44100 -es -b 16 -c 1 -V1 -

  4. Method 2: Run Command (Output Audio With "aplay"):
    [ Replace "-f 99.6M" By A FM Radio Frequency, And "-p 51" By Your PPM Correction ]
    #> rtl_fm -f 99.6M -M wbfm -s 200000 -r 44100 -p 51 | aplay -r 44100 -f S16_LE -t raw -c 1