Software Defined Radio Software


HHDSDR Homepage:
HDSDR is a freeware Software Defined Radio (SDR) program for Microsoft Windows 2000/XP/Vista/7/8.
..Typical applications are Radio listening, Ham Radio, SWL, Radio Astronomy, NDB-hunting and Spectrum analysis.
..HDSDR (former WinradHD) is an advanced version of Winrad, written by Alberto di Bene (I2PHD).

..SSB, CW and AM demodulator:
..By I2PHD and IK2CZL, practic skin, made for für I/Q direct mixing concepts,
..demodulates also by set an offset of middle frequency 12 kHz single IF very well. Can handle 40kHz+

..Software defined radio using MF:
..By G8JCF, good AM, better SSB and CW demodulator, also software AGC.
..Several filter and noise reduction equipment. Also recorder mode supported.

..A Soundcard Based SAQ VLF Receiver:

..Free Software Radio (also good for DRM)

..I2PHD's SDRadio can be downloaded from here:

IK2CZL's IFDSP can be downloaded from here:


Dream - to decode DRM signals:
Dream v1.16 compiled version

...The necessary Qt runtime library "qt-mt230nc.dll" can be downloaded at:

...Optional download: AMSchedule.ini
...Get the current shortwave broadcasting schedule for AM stations from:

Other DRM software:
..Free Software Radio (also good for DRM)
..Tip: choose in Config->Receiver->Type: DSR30

..Commercial DRM Demodulator/Decoder for Windows 2000, XP and Vista
..Tip: Choose general-purpose DRM Software Radio (DRM demodulator/decoder for third-party receivers)


Contains free software for soundcards, like: Signal analyzer, track meter, func shaper, easyq...

Voxengo Span:
SPAN is a real-time FFT spectrum analyzer VST plugin. For the most part
it was derived from GlissEQ and CurveEQ professional equalizers and
it reproduces their spectrum analysis functionality

Spectran is a program to do real time or deferred spectral analysis / waterfall display, in addition to real time audio filtering (band pass, denoising, band reject and CW peaking) of audio signals, using the PC sound card to digitize the input analog signal, or taking as input a WAV file. Its characteristics are well suited to dig weak signals buried into noise, thanks to a selectable bin size down to 21 millihertz. On the opposite site, it can visualize normal CW signals, resolving individual dots and dashes (with a reasonably fast PC). - direct download: Download Spectran V2

Low-, High-, Bandpass
Free programmable DSP-Filter
using sound card and WIN95
by Michael Keller, DL6iAK
Free programmable DSP filter up to 4kc

MM-DSP Filter
MM-DSP Filter is free for Amateur Radio Use
BY JE3HHT - Makoto Mori
DSP filter with Windows and Soundcard
Win95/98/ME/NT/2000/XP/Vista &Win7

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