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Reviews Categories | Ham Software - Other than logging | FFT DSP by AF9Y Help


Reviews Summary for FFT DSP by AF9Y
FFT DSP by AF9Y Reviews: 2 Average rating: 5.0/5 MSRP: $35
Description: FFT DSP is DSP software which can detect weak radio signals in real time.
Product is in production.
More info: http://www.webcom.com/af9y/radio10.htm
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ONL5183 Rating: 5/5 Sep 22, 2002 16:42 Send this review to a friend
Very accurate  Time owned: more than 12 months
Here is the most amazing amateur software I know dedicated to signal processing. If you have basic knowledges of propagation, signal/noise ratio and its meanings, traffic types and all that stuff defining the usual work of ham radios, and even if you are like me a short waves listener, this spectrum analyser can interest you.

Peculiar it is really, reason AF9Y displayed dumps of spectrum graphs with legends for convenience as these real time displays are more than hermetics for most of us at first sight.

Mike Cook, alias AF9Y, a long-time ham radio, wanted an application able to detect weak radio signals in real time and even signals well below the noise level. Such applications did not exist in the amateur world and therefore he designed himself this program.

Its key features are a real time display of a color spectrum graph with 2 Hz filtering (using a 4096 point FFT), it uses an automatic color gradient to improve the visibility of signals vs the background noise, an integration mode to detect signal below the noise, it displays on screen Moon Az/El for moon bounce traffic as well as TOD and East/West sequences and more. FFTDSP displays also true S/N measurements and bar graph, smoothing filters (hamming, cosine, etc), has a built-in zoom in/out for narrow (1300 Hz) or wide (2500 Hz) display and it is able to track object by RA/Dec.

I/O side, FFTDSP can not only record and playback waves for post spectrum analysis (using a soundcard) but it can also save and load spectrum pictures.

Of course, as we expected, last but not least FFTDSP supports SETI applications through an unattended data logging monitoring. A way to compete vs Seti@home...

The program runs on Windows 32-bit OS and requests at least a 80486 CPU with sound card.
For the advanced amateur.

Thierry
ONL5183
http://www.astrosurf.com/lombry
 
WM5R Rating: 5/5 Jun 29, 2000 15:00 Send this review to a friend
See weak signals in real-time!  Time owned: more than 12 months
FFT DSP by AF9Y is one of the great classic DSP software packages for Amateur Radio. It uses your PC sound card to search for signals in the audio passband in real-time. This is a favorite program amongst EME ("moonbounce") enthusiasts, and is worth every penny.

You can try it out for free before you decide to buy, which is a great feature.
 


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