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g4zfqradio - Soundcard SDR Basics, SDR Sharp
https://sites.google.com/site/g4zfqradio/connecting-soundcard-sdr-to-computer
Select "Softrock / Si570 (Or whatever radio you have.) from the drop-down. Click the +Audio tab and select the input from the Softrock, other soundcard SDR or …
SDR Soundcard Mod - RTL-SDR
https://www.rtl-sdr.com/sdr-sound-card-mod/
SDR Soundcard Mod. Yesterday we got an email from a reader (Tom) about a soundcard capacitor mod that is useful for SDRs. Tom writes. First you buy one of these sound cards: Creative Soundblaster X-Fi Surround 5.1 Pro USB (various internet sources) Then you make the following mods: http://www.rfsystem.it/shop/download/SB_Creative_XFi_Pro_USB.pdf. I did …
g4zfqradio - Soundcard_SDR_Software
https://www.sites.google.com/site/g4zfqradio/sdr_soundcard_win_soft_short/soundcard_sdr_software
Note my references to centre frequency are relevant to those using fixed tuning or independent controllers. SDR programs with Si570s should be setup to compensate. Dream may be used in normal mode with PSDR and other software using VAC. . For the baseband audio to be correct the SDR filter must be 10KHz wide.
SDRSharp Users Guide - RTL-SDR
https://www.rtl-sdr.com/sdrsharp-users-guide/
Usually the default value should be fine for general listening. This is normally greyed out unless using a sound card based SDR. Input: A Sound Card. Specifies the input sound card when using SDR# with the “Other (Sound Card)” source. Used mainly with sound card based software defined radios. In normal use with an RTL-SDR this does not need to be set.
SDR Soundcard Tester - EEWeb
https://www.eeweb.com/sdr-soundcard-tester/
The key to using a soundcard successfully in digital signal processing or digital radio applications lies principally in the characteristics of the soundcard itself. This applies in particular to SDR (software defi ned radio) programs that turn your PC into a top-class AM/SSB/CW receiver, assuming your soundcard cooperates.
Using sound card as sdr? : amateurradio
https://www.reddit.com/r/amateurradio/comments/9ajr40/using_sound_card_as_sdr/
The softrock SDR does direct conversion of a particular frequency and produces I and Q signals that can be processed with a soundcard. With the two I and Q signals it will allow you to receive all signals chuck of spectrum that is as wide as the sample rate.
The Veteran SDR
http://theveteransdr.com/
I feel like I finally cracked to code of spurious signals with sound card based SDR's using the Tayloe QSE/QSD. In the Ham spirit of sharing between Hams, all design files and firmware will be open source. For more information on the AVR firmware to control Si570 oscillator check out Fred Krom's (PE0FKO) website.
Janus – a Sound Card designed for Software Defined Radios ...
https://tapr.org/pdf/DCC2006-JanusSoundCard-VK6APH-KD5TFD.pdf
The M Audio Delta 44 is probably the preferred sound card these days for SDR. It has 4 inputs and 4 outputs, 24 bit sampling at rates to 96 kHz. Unfortunately, it is only available as a PCI card, so it is not appropriate for a laptop computer.
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