All Mode Software Radio

A.M.S.R

AMSR is a Ham radio receiver program to receive some (AM,FM,SSB,CW) radio signals from the Elektuur DRM Receiver. It is a test program to see if I can build a receiver in software with minimal hardware and some DSP technique. There is a mutch nice software radio on the web at SDRadio from Alberto I2PHD.

The program fuctionality is described in the next steps:

Read the I & Q signals from the input soundcard L & R.
Mixture the samples with a VCO frequence that the user can set from 0 to 24KHz
Change to the frequnce domain by a FFT (size at About)

The program is in development on the moment, please check for new releases.

AMSR

Download AMSR.exe you also need some FFT functions in this DLL, put it on the same directory as AMSR.exe.
Example wav file (zip, 48000 samp/sec, stereo with same data). I need a example file with Q&I samples!

Elektuur DRM Receiver

Version history.

V0.1	Initial version released, very basic
V0.2	Never released, testing only
V0.3	Changed the output (reverse) FFT to a lower size (1/4 or 1/8) so less filtering and cpu power is needed
V0.4	Remove the seperated FFT for the display and use the FFT from the filter to display, still expirimental
V0.5	Mouse drag for the center frequence end low and high filter bandwidth. Selection of the sound device.
V0.6	The size of the FFT and FFT reverse can be changed bij de Options dialog. The input and output sound device can be selected.
V0.8	Reading of .wav files is possible via the options/file menu, I only test it with my own build wav file. (?? will it work ??)
V0.9	Sound out downsample by 2 with using the stereo output of the mono signal