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Software Defined Radio Basics

Software Defined Radio Basics. Don Scipioni KC4RCG 03APR 2013. Agenda: Software Defined Radio (SDR) Concepts Examples of SDR Products Free (open source) Software Examples of SDR in Use. What exactly is an SDR?.

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Software Defined Radio Basics

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  1. Software Defined Radio Basics Don Scipioni KC4RCG 03APR 2013

  2. Agenda: • Software Defined Radio (SDR) Concepts • Examples of SDR Products • Free (open source) Software • Examples of SDR in Use

  3. What exactly is an SDR? A software-defined radio system, or SDR, is a radio communication system where components that have been typically implemented in hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded system.

  4. What exactly is an SDR? A basic SDR system is comprised of: • Personal Computer equipped with a Sound Card • RF Front End (the SDR) • Software to configure/operate the SDR Signal processing is managed by the computers processor, unlike a traditional radio where dedicated components perform the same functions. This methodology provides the means to operate using varying frequencies, protocols, and environments extending the life and usefulness of the system over conventional radio hardware.

  5. Examples of SDR Systems Used The SoftRock RXTX Ensemble Transceiver Kit, a 1 watt SDR transceiver Realtek RTL2832U + Elonics E4000-Based SDR $100.00 $20.00 SDR receiver good for satellites, decode weather images $150.00

  6. Free (open source) Software • SDR# - A high performance Software Defined Radio application • ADSB# - A simple and cheap Automatic Dependent Surveillance-Broadcast (ADS-B) receiver using RTL-SDR captures aircraft transponder data • SDR-RADIO.com - A Windows console for Software Defined Radio (SDR) receivers and transceivers

  7. Examples of SDR – Amateur Applications SDR# Software Screen Sample 250Khz AM mode

  8. Examples of SDR – Amateur Applications SDR# Software ADSB# Software HFDL Software ADSB# Software Screen Sample 1090Mhz Google Earth Software

  9. Examples of SDR – Commercial Applications SDR Solution Developed for Federal Government Client, October 2012

  10. Questions?

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