1249mp4 -

(Software Defined Radio)


1249mp4

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


Based on available search results, the "" identifier refers to a widely marketed, portable 1080P/4K-compatible smart projector, often branded as ,

, or similar "No-Name" Chinese brands in the $100–$200 range. It is frequently categorized as an "indoor/outdoor" smart projector, often featuring Android 11, WiFi 6, and a 180° rotatable stand. Key Performance Characteristics (Based on Typical Specs) Native 1080P (1920x1080) with 4K support.

I can tell you if this is worth the money for your specific situation.

Typically advertised around 600–800 ANSI Lumens, though "white brightness" or "lux" numbers are often inflated in generic listings. Operating System: Android 11 (smart functionality).

A "proper" review of this type of projector emphasizes that it is a best suited for casual viewing, camping, or kids' rooms rather than a primary home theater.


Get Your SDR USB Dongle "Frequency Correction (ppm)" (2 Methods)


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

1249mp4 -

Based on available search results, the "" identifier refers to a widely marketed, portable 1080P/4K-compatible smart projector, often branded as ,

, or similar "No-Name" Chinese brands in the $100–$200 range. It is frequently categorized as an "indoor/outdoor" smart projector, often featuring Android 11, WiFi 6, and a 180° rotatable stand. Key Performance Characteristics (Based on Typical Specs) Native 1080P (1920x1080) with 4K support.

I can tell you if this is worth the money for your specific situation.

Typically advertised around 600–800 ANSI Lumens, though "white brightness" or "lux" numbers are often inflated in generic listings. Operating System: Android 11 (smart functionality).

A "proper" review of this type of projector emphasizes that it is a best suited for casual viewing, camping, or kids' rooms rather than a primary home theater.


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