Radio scanner (scan radio RTL2832U (24-1766 MHz)

Radio scanner (scan radio RTL2832U (24-1766 MHz) - RF spectrum analyzer.

For the post of radio monitoring.

Radio frequency:

Elonics E4000________52 - 2200 MHz with a gap from 1100 MHz to 1250 MHz (varies)

Rafael Micro R820T____24 - 1766 MHz

Fitipower FC0013_____22 - 1100 MHz (FC0013B/C, FC0013G has a separate L-band input, which is unconnected on most sticks)

Fitipower FC0012_____22 - 948.6 MHz

FCI FC2580_________146 - 308 MHz and 438 - 924 MHz (gap in between).

Not immediately say that the control panel and CD-ROM, you are generally not useful. Just really don't care what is written in dongle in terms of supported functionality (depends on the price). It is only important to dongle were mikroshemki R820T tuner and ADC RTL2832U.

Apparently, no one ever buys these dongles for use for its intended purpose (listening to the radio and viewing of digital terrestrial television on the computer screen).

Many people are interested in, primarily, the ability of the alternative device.

The RTL2832U chip accidentally discovered a very valuable mode in which all the on-chip series functions decode TV is completely turned off, and the chip starts to work as trite, but high speed ADCS to digitize up to 3 million eight-bit samples per second. It is clear to us, as we had heard a lot about peacefully plowing tractor with vertical takeoff.

With the help of a special driver chip can even complete control over USB, and to receive the digitized terrestrial signal.

Broadcasting signal from the tuner, made on the R820T chip. The chip may be others, but this one is interesting because it can operate at frequencies from 24 MHz to 1.75 GHz. The received frequency is also supplied through the USB driver, and a piece of the radio spectrum near a given frequency and a width of 250 kHz to 3 MHz is cut off the air and is fed to the ADC.

Further, the software on the computer from the digitized piece of the spectrum unfolds on the screen panorama, where each transceiver is visible and can be heard.

It is nothing like the SDR - Software Defined Radio over terrestrial radio signal without any manipulation — he or digitized directly from the antenna (but the parts will be very expensive), or first transferred to the zero frequency and then digitized.

What can SDR receiver TV dongle?

He is able to perform miracles.

Since demodulation of radio transmission, as well as the selection of specific stations from a whole heap taken at the same time is carried out by treating the numbers on mathematical algorithms, then we can hear all that is broadcasting in the frequency range supported by the tuner dongle. Any kind of modulation. If only the computing power of the computer to which the dongle is connected, for this was missing.

What is most remarkable, is available to accept any type of modulation is a universal radio. Today free software will allow You to listen:

Radio AM stations.

Wideband FM (Soviet VHF range).

Wideband FM (imported FM band), RDS and stereo are supported.

Amateur radio modulation schemes — Telegraph CW and phone USB/LSB/DSB/NFM

Any radio communication on VHF (usually NFM)

Digital radio, APCO P25, DMR, NXDN, D-Star, ProVoice, MotoTRBO is the emergencies Ministry, interior Ministry, etc.

Moreover, if the area of the radio band very much inhabited, and the stations are right next to each other, unlike analog receivers where selection of the adjacent channel is low, and clean reception of the desired station is not achieved, then all the way to listen to, you can cut a piece of spectrum widths. Because digital technology.

Now that you can listen to:

CB (Citizen's Band) – civilian band with "secondly".

LB, the so-called low Band 30-50 MHz, within which parasitize and outdated models of home cordless phones.

TV in meter and decimeter ranges (sound).

VHF and FM radio broadcasting.

VHF communication of all services (traffic police, police, security, taxi drivers, doctors, energy, etc.)

Including civil radio LPD/PMR/GMRS/FRS/KDR

Any what will be the future.

It is clear that there are a bunch of softiny, allowing you to pull out of the received signals of the paging message, or detect the location of the aircraft (ADS-B AIRCRAFT RADAR). But this is a highly specialized exotic ordinances which should be known in other places.

You can listen to anything. In the analogue, and digital.

Experiments have shown that the sensitivity of the device is high, and is a fraction of microvolt (about 0.25 µv for LPD). This is a good indicator.

Install drivers RTL SDR receiver.

Below is a simple guide on installing the drivers:

First, we need a driver, switching chip RTL2832U dongle undocumented in operation. The executable is called zadig.exe and can be wigglin yourself. However, it makes sense to take it to the FAQ.

http://sourceforge.net/projects/libwdi/files/zadig/

Please note that each operating system relies own version of software, so be careful.

Generally, program management SDR (also called programs) also contain in their distribution zadig.exe maybe even somehow adapted - see including to the folder that the program management.

More information here:

http://sourceforge.net/projects/libwdi/files/zadig/

http://www.rtl-sdr.ru/page/opisanie-elementov-upravlenija-i-nastroek-sdrsharp

http://www.rtl-sdr.ru/page/instrukcija-po-ustanovke-sdrsharp#cut

http://sdr-radio.com/

http://www.rtl-sdr.ru/page/vse-dostupnye-na-etom-sajte-plaginy-s-kratkim-opisaniem

http://www.rtl-sdr.com/big-list-rtl-sdr-supported-software/

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