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Software Defined Radio on a Shoestring

Software Defined Radio on a Shoestring. By Neil Goldstein W2NDG. Computers have become more powerful at an exponential rate. Ray Kurzweil’s extension to Moores Law. Because of the increase in processing power we can emulate more and more exotic functions with microprocessors.

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Software Defined Radio on a Shoestring

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  1. Software Defined Radio on a Shoestring By Neil Goldstein W2NDG

  2. Computers have become more powerful at an exponential rate. Ray Kurzweil’s extension to Moores Law

  3. Because of the increase in processing power we can emulatemore and more exotic functions with microprocessors. • Musical instruments • Game consoles • Other computers • DSP • Cheap SW receivers • Baofeng UV3R • High-end Rigs • SDR Si4734 chip, as used in the Degen DE321, a sub-$20 shortwave receiver with DSP

  4. SDR = Software Defined Radio • The only radio hardware is the RF front-end • The rest of the radio is emulated • USB, LSB, AM, WFM, NFM, ECSS, CW, Digital formats, and more • Waterfall displays • Spectrum analyzers • Visual adjustment of filters • Recording of an entire band at once

  5. Popular SDR Receivers: • RFspace Net SDR $1499 • RFspace SDR iq $499 • Micro Telecom Perseus $999 • Bonito 1102s RadioJet $699 • WinRadio $899-$1400 and up RFspace SDR iq

  6. SDR Software: • HD SDR • WinRAD • SDR-Radio • SDR# HD SDR showing 80M LSB

  7. Low Cost HF Options: • Tony Parks Kits • Soft66 Radios • RTL-SDR (with converter) • Avala SDR Board Soft66LC4

  8. SOFT66LC4 - The Basics: • Sound Card Based • 2 Connections to your computer: • USB for control • Audio, input for processing • Antenna • RF Gain 2

  9. Soft66LC4 Basics • Works best with HD SDR • Force Drivers • Drop EXT_IO.DLL in HD SDR • Missing Features (for now) • External Control for all features • Help Available from W2NDG • $118 with shipping

  10. Soft66 Lite • Fixed band • Like Tony Parks SoftRock • $23 Each with shipping

  11. What about my iPhone – iPad? • iSDR • Only with fixed SDR • No control • Good for small QRP setup • Android – Not quite there yet

  12. UHF-VHF SDR • Funcube Dongle $200 • RTL-SDR $20

  13. RTL-SDR • Designed for European Digital TV • Will Not Receive TV Here! • Does Not Come With Useful Software • Look for RTL2832U + E4000 • eBay is best source (slow! Be patient) • Setup is a little funky, follow directions! • SDR# is best software for now • Throw the antenna away • 64 - 1700 MHz with a gap from approx. 1100 - 1250 MHz • PAL connector

  14. RTL-SDR • Use SDR# • sdrsharp.com/index.php/downloads • Follow links for install instructions • If you want to use HD SDR, you will need to follow the AUTOMATIC instructions. You can add SDR# later • SDR# is NOT coming with RTL-SDR support built in anymore. Separate downloads from SDR# site. • New custom version with scanning • PAL-to-F adapter from Radio Shack • #278-261

  15. RTL-SDR with HF Converter • Search eBay for: Converter for RTL2832U • About $66

  16. No Cost SDR?? • SDR-RADIO • Networked SDR

  17. Handouts are at: Neilgoldstein.net

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