Dump1090 program. R820T Archives. Over on the SDRSharp Yahoo group, HB9AJG has posted an interesting report in a PDF file containing some measurements (Note you will need to be a member of the group to download the file titled “Some Measurements on E4000 and R820 Tuners.pdf”. Here is a Direct Mirror of the file.) quantifying the performance of both the E4000 and R820T RTL-SDR DVB-T dongles.
See the discussion in the Yahoo group here. These results confirm the feeling that many RTL-SDR users have had: that the E4000 is more sensitive in the lower frequencies, and that the R820T is more sensitive in the higher frequencies, which is why it is recommended for ADS-B. The results also show that the R820T is better in terms of Image Rejection and Internal Signal Birdies.
Image Rejection Because the E4000 is a Direct Conversion Receiver, it has an Image Rejection problem. EarToEarOak/RTLSDR-Scanner. YouTube. Josh Knows | Welcome to JoshKnows.com. 哈罗CQ火腿社区 - Powered by phpwind. Home | GNSS-SDR - An Open Source Global Navigation Satellite System Software Defined Receiver. Sdr-radio-com : SDR-RADIO.com. How To Build an FM Receiver with the USRP in Less Than 10 Minutes. Guruofquality/grextras. Operation with a Realtek RTL2832U USB dongle DVB-T receiver | GNSS-SDR - An Open Source Global Navigation Satellite System Software Defined Receiver. Introduction This article describes what is probably one of the cheapest ways for experimenting with real-life signals and GNSS-SDR. This is product from a combined effort of many people, so let us only mention (to our knowledge) the very original source, the V4L/DVB kernel developer Antti Palosaari, who discovered an undocumented operation mode for some USB DVB-T dongles based on the Realtek RTL2832U chipset, enabling them to be used as a cheap Software Defined Radio (SDR) front-end.
The key feature is that the chip allows transferring raw I/Q samples to the host, that in principle is the responsible for DAB/DVB+/FM demodulation. This is great news for a GNSS software receiver, since it covers the targeted frequency bands. The RTL2832U outputs 8-bit I/Q-samples with a baseband sample-rate up to 3.2 MSPS, according to the specifications. However, the highest sample-rate without losing samples that has been tested so far is 2.8 MSPS. OsmoSDR driver support GNSS-SDR.internal_fs_hz=2000000. Kochmorse - Koch Morse Tutor for Linux. KochMorse is a easy to use morse tutor (trainer) for Linux using the Koch-mehtod. It provides a clean and modern graphical interface. The current release (version 0.99.x) is full featured and stable. I've tested it under Fedora and Ubuntu and it works well. If you have trouble to get it running or you like to see any features added, please contact me by mail: hmatuschek [at] gmail [dot] com .
The Koch-method This tutor uses the Koch-method, which is known to be the fastest way to learn morse-code. Technical This application was written in Python but uses alsa for sound-output. Changelog. WRPLUS. HDSDR Homepage. RTLSDR: My First SDR! « AndrewNohawk. A few weeks ago (I’ve been meaning to do this post for ages, few weeks ago is give or take 2 months) there was a post on reddit regarding a new software defined radio that cost around $20. After reading a few topics on the discussion (now all avail at now ) my interest was peaked. RF was a whole new world of WTF for me.
I think it offers the same awe and wonder that I had putting a tape into my very first tape into my vomit brown fischer-price tape player: The basic gist of how it all works is as follows: * There is a common chip found in video cards known as an RTL2832U * This chip is commonly used for specific frequencies used for Television signals (and then software decodes this so you could watch TV on your pc) * A bunch of cool guys ™ found a way to read the data coming into the card directly with drivers * These cards also offered some tuners that allowed tuning beyond the basic TV ranges This meant: In Ascii Thats:
GNU Radio Blog. Simple DVB with Gstreamer and GNU Radio - MyLabWiki. This article describes a simple video broadcasting setup based on Gstreamer, GNU Radio and the Universal Software Radio Peripheral (USRP). It does not (yet) provide any DVB-T or DVB-S compatible system — just a simple way to get your webcam on the air! Overview The objective is to create a simple digital video broadcasting setup using easily available components as illustrated on the figure below. The long term goal is to get a similar setup up to near space and LEO. UVC Webcam An UVC compliant webcam is used as a cheap but efficient video source. Gstreamer Gstreamer is used for everything related to video processing.
GNU Radio GNU Radio is used to create the software defined radio transmitters and receivers. The Universal Software Radio Peripheral provides the necessary transmitter and receiver hardware to get our signals on the air (bits and bytes can not fly) Using these components we can accomplish some very advanced and cool functionalities, such as: Source code or V1: Conceptual prototype. JACK | connecting a world of audio. Linux Software [rtlsdr.org wiki] Options for free software in Linux are: GNURadio is an excellent but unwieldy piece of software for use with RTLSDR. It's the only software for now that will receive analogue (FM, AM, sideband) and digital modes such as AP25, FSK and ADS-B. Be warned it's not very easy to drive but if you are canny you can use it to build your own software defined radio.
Follow the build guide for your Linux system as the latest code is always the best to use.GQRX apparently does too. As SDR# is written in C# it works with Mono in Linux! Have a look here for a good summary of Linux utilities. Getting SDR# Running in Linux As of 14 September 2015 SDR# (along with AstroSpy and SpectrumSpy) and works again in Linux on x86/x64 and ARM using Mono! The fact that SDR# worked in Mono at all was a happy accident. There are 2 ways to do this, you can use the PlayOnLinux way shown in Français ici and English here or the Mono way detailed below. Instructions (updated 16 Jul 2016) Realtek. The RTL2832U is a high-performance DVB-T COFDM demodulator that supports a USB 2.0 interface. The RTL2832U complies with NorDig Unified 1.0.3, D-Book 5.0, and EN300 744 (ETSI Specification). It supports 2K or 8K mode with 6, 7, and 8MHz bandwidth. Modulation parameters, e.g., code rate, and guard interval, are automatically detected.
The RTL2832U supports tuners at IF (Intermediate Frequency, 36.125MHz), low-IF (4.57MHz), or Zero-IF output using a 28.8MHz crystal, and includes FM/DAB/DAB+ Radio Support. Embedded with an advanced ADC (Analog-to-Digital Converter), the RTL2832U features high stability in portable reception. The state-of-the-art RTL2832U features Realtek proprietary algorithms (patent-pending), including superior channel estimation, co-channel interface rejection, long echo channel reception, and impulse noise cancellation, and provides an ideal solution for a wide range of applications for PC-TV, such as USB dongle and MiniCard/USB, and embedded system via USB interface.
Osmocom.org git repositories. Software Defined Radio (SDR) on the EzTV645 w/ RTL2382U and FC0013 | getglitched.com. Due to much of my own issues with setting this USB dongle up, I thought it should take the time and write my own version of the installation. Take note that this installation is for Windows 7, and not linux (if that wasn’t already apparent). I will also list all of my references below, which may end up solving some problems people were having.
First find a place to order the dongle at a reasonable price. I got mine from DealExtreme at a price of just shy under $20. The first thing you want to do is to check the chipset in your device. A few things you need to download prior to starting: Zadig So if Windows installed some of it’s own drivers in one of the previous steps, that is OK as we are going to replace them right now. Open the SDR# file you downloaded from the link above and extract it to a location you will remember (Desktop in my case) Extract the Zadig file into this folder you just created. Click the “Replace Driver” button. GNSS SDR Toolkit for MATLAB® | ChameleonChips. What is it? Are you involved in advanced wideband GNSS signals research using Software Defined Receivers? Then you know how frustrating it can be to crunch hundreds of Gigabytes of data using MATLAB. Sure, you could implement your algorithm in C or try to run it on a DSP or even get it to go realtime on an FPGA – but you don’t want to add three or more years to your graduation do you?
Besides, all you want to do right now is develop your algorithm – not go down a path that ends up limiting flexibility. Hands down MATLAB’s flexibility can’t be beat. If only there was a way to speed it up without having to buy expensive toolboxes… even by a factor of 30 or so. That would mean the difference between running something overnight versus taking a break to get caffeinated. Features Supports any IF-sampled front-end data file written in binary format (tested on NordNav R-30, SiGe, University of Colorado ‘discrete front-end’ and Ohio University wideband TRIGR data files.
Www.sbrac.org/files/build-gnuradio. BasicExam. Amateur Radio Exam Generator - Spectrum Management and Telecommunications. Amended April/2007 Amateur Radio Service Home Page a learning aid for prospective amateurs an administrative tool for accredited examiners Industry Canada is pleased to introduce an exam generator software package to facilitate the amateur examination process that our accredited examiners have taken on our behalf. This software package can produce a unique examination for either a basic or advanced amateur certificate according to the random selection criteria outlined in RIC -3 .
It will also generate a worksheet, and it has an additional feature that allows self-testing on a home computer. To download a copy of this software, simply click on this link ( icp-2007.zip ). The software is approximately 1.7 megabytes in size in compressed format, which is a self extracting executable. Documentation and Operating Instructions The software operates under Windows 95/98/ME/2000. The examiner appears as a graphic user interface. Keyboard commands: To select answer A Home key End key Down arrow key: ExHAMiner. RTL2832U - SpenchWiki. From SpenchWiki Introduction This page details information specific to RTL2832U-based DVB-T USB dongles. The information applies to using it with GNU Radio (using gr-baz), and on Windows with the ExtIO plugin for HDSDR.
News I have created a new discussion forum on Google Groups as a place to discuss this code. Supported devices RTL2832U-based USB DVB-T adapters (non-exhaustive list, see here for how to install device driver on Windows). The following are the names of some common devices, but others not listed here will work if their USB ID is the same: ezcap Hama nano Terratec Noxon 1 & 2 Dexatek 1 (also Logilink/MSI) Dexatek 2 (also ZAAPA HD) Dexatek 3 Peak Ardata MyVision/Gigabyte GT-U7300 MyGica/G-Tek Lifeview PROlectrix Terratec Cinergy T 1 DIKOM HD Twintech Genius TVGo 2 SVEON You can double-check the full list by inspecting the main librtl2832++ source file.
There is a helpful subreddit with a more complete list. Manual override The ezcap EzTV668 with E4000 tuner Tuners Issues. SDR-J. RTL-SDR - thecraag.com. With a BNC => MCX adaptor. My slides from the BATC Convention talk are now up! The key to the RTL-SDR is the Realtek 2832 chipset. The drivers for this give us access to the I2C control of the Frontend Tuner (eg. an Elonics E4000), allowing us to change the tuner frequency between 50-2200MHz (E4000), whilst sampling the output with the 3.2Msps ADC in the Realtek 2832.
These samples are then fed down the USB into the PC, allowing demodulation with programs such as SDR# and HD-SDR . This allows use to use the cheap TV dongle as a super-cheap sdr radio receiver, viewing upto 3.2MHz of bandwidth at once. Discovery Antti Palosaari discovered the ability to dump I/Q samples from the Realtek 2832 whilst developing the Linux driver for DVB-T. I smell very cheap poor man's software radio here :) - Antti Palosaari The guys at Osmocom jumped on it and very quickly had a set of Linux programs written to stream the samples. Capabilities Technical The ADC in the RTL2832 chip runs at a 3.2Msps sampling rate. YouTube. Upconverter - opendous - MF/HF Converter for Receivers - Open Hardware designs and related works by Opendous Inc.
Converts signals in the MF and HF Bands to signals in the VHF Band (specifically 100.5MHz to 150MHz). Intended for use in receiver applications with projects like RTL-SDR / SDR# / FunCube Dongle , or to listen to AM radio using an FM receiver. The design files can be found in SVN or downloaded as an archive . The board was designed using the Free Open-Source Software KiCad and QUCS . All design files are Open Hardware and released into the Public Domain under Creative Commons CC0 . Now available from NooElec Online or eBay .
KS4JU at HamRadioScience has a review of the board and has posted a tutorial video . Questions or comments? The Upconverter is a passive Double-Balanced Mixer with RF switches at input and output to allow a Passthrough mode. RF and IF ports in a Double-Balanced Mixer are interchangeable but there is more LO-to-RF Isolation than LO-to-IF Isolation. The mixer used is the Mini-Circuits ADE-1 with a low LO Power Level to reduce noise and better receive weak signals. Layout. Ghpsdr3 SDR project. Homepage. REDHAWK. Description REDHAWK is a software defined radio (SDR) framework designed to support the development, deployment, and management of real-time software radio applications. To support the design and development of software applications, REDHAWK provides tools that allow development and testing of software modules called "Components" and composition of Components into "Waveform Applications" that can be seamlessly deployed on a single computer or multiple network-enabled computers.
The REDHAWK IDE provides tools to support development of REDHAWK software. The development and deployment of REDHAWK Applications are aided by graphical editors and drag-and-drop Waveform construction. The IDE allows users to interact and control multiple running REDHAWK instances and applications. Recent Announcements Release of GNUHAWK (April 22, 2013) - GNUHAWK is a software package containing a shared library and components that enable GNU Radio blocks to be used within the REDHAWK software framework. Software. How to Make a $19 Police Radio Scanner. GRC Examples. Below you will find a few software defined radio examples implemented in the GNU Radio Companion . They are very simple yet functional examples I created while I was learning GNU Radio and SDR – I hope they can be useful to others too, who are learning GNU Radio and/or software defined radios. You will find that in many of the examples tuning is done using a frequency translating FIR filter rather than changing the USRP frequency.
This is because on some daughterboards (e.g. WBX) tuning is not fast enough for the user moving a GUI slider. If you are only using a daughterboard that is fast enough you can conveniently change the flow graph to tune the USRP directly and remove the frequency translating filter. If you are looking for theoretical material for learning digital signal processing and software defined radios see Suggested Reading on the GNU Radio website.
The examples are hosted on Github, see csete/gnuradio-grc-examples or create a local clone using git checkout uhd AM Receiver. Adding ADS-B, ACARS, and ATC Audio to PlanePlotter Using Multiple RTL2832U Sticks | Ham Radio Science. PlanePlotter from COAA. Rtl1090.web99.de. Skykooler/radiobird. Hacking the Raspberry Pi: Wearable computer and software defined radio | bmillerjacobson. GNU Radio - GNURadioCompanion - gnuradio.org. RTL2832 / RTL2838 DVB-T. Linux: Multimon Radio Transmission Decoder. PWN SDR: RTL-SDR for Pwn Plug. Embrtlsdr. OpenLTE / Home / Home. GNU Radio Projects. GNU Radio Blog. Csete/gqrx. Software radio. Gr-osmosdr - Gnuradio block to work with OsmoSDR and rtl-sdr. RealTek RTL2832U. GNSS-SDR | Free software downloads. GNSS-SDR: gnss-sdr-developers. RDS reception using SDR.
Flightradar24.com - Live flight tracker! How to Make a $19 Police Scanner. Search - #gnuradio. Rtl-sdr – OsmoSDR. RTL2832U _淘寶搜索. The ultimate software for your SDR station. Untitled Document. Software Defined Radio Resources | Ham Radio Science. Research - Products. Balint256/gr-rds. RTL2832U - SpenchWiki. Gr-baz - SpenchWiki. Raspberry Pi as Remote Server for RTL2832u SDR | Ham Radio Science. GNU Radio working - finally | openspectrum.eu. GNU Radio - WikiStart - gnuradio.org. Pinkavaj/rtl-sdr. RTL-SDR monitors ADS-B with ADSB# and adsbScope. ADSB# – A simple and cheap ADS-B receiver using RTL-SDR | SDR# SDR Touch. New Linux/GNURadio users, read this before installing! : RTLSDR. RTL-SDR community on Reddit. Software-Defined Radio remotely using a Linux wall wart. List of software-defined radios.
RTL – Software Defined Radio. Rtlsdr : RTL-SDR. Pe1nnz.nl.eu.org: Direct SSB generation by frequency modulating a PLL. Websdr.org. List of amateur radio magazines. RTL2832U / R820T vs RTL2832U / E4000 | Ham Radio Science. Rtl-sdr and GNU Radio w/Realtek RTL2832U and Elonics E4000. SDR# | A Software Defined Radio in C# Scateu/GNURadioForRaspberryPiOnArchlinux. Roger-/pyrtlsdr. Getting Started With RTL-SDR. Getting started with software defined radio. Those USB TV tuners used for SDR can also grab GPS data. GNU Radio - Home. GNU Radio Tutorials: Part 1 - GRC, Sources, Sinks, Audio & GUI Blocks. How to shrink a base-station into a Raspberry Pi.
Ettus Research - GnuRadio 中国 - 做中国最专业的开源软件无线电门户！ Open Broadcaster Software. NW7US - Amateur Radio Station in Omaha, Nebraska - Tomas David Hood.