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Topic: software defined radio?

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msuho

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Posts: 53
Joined: Oct. 2004

Posted: Mar. 19 2005,13:44

I know this is not a DSL topic per se, but I know there are some radio amateurs on the forum, so here goes-

I was wondering if anyone's experimented with GNU Radio or some other Software Defined Radio application on their DSL box. If you have, I'd be very interested in knowing the software & hardware you used, and if you were satiisfied with the results.

I'm in an astronomy group that monitors VLF radio transmissions (17-35 khz) to detect solar flare activity (the D layer of the ionosphere is sensitive to this). Most people in the group are radio amateurs, and use homebuilt VLF receivers & an analog to digital converter to collect data. A few folks are starting to use 96Khz sound cards & radio software to do the same thing. As my attempts to build a radio receiver have been unsuccessful, I'm looking at the sound card idea for Linux.

Any input welcomed,

Mark

dmizzel

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Posts: 112
Joined: April 2005

Posted: April 16 2005,03:31

Let me preface this by saying my background is in music production and engineering, and with my limited soundcard/linux experience, I wouldn't think that sound cards would be capable of ranges above 20khz (maybe 21khz on the high side). As I'm sure you are aware human hearing is 20hz-20khz. The 96khz sound card refers to the sampling rate, not the audio frequency range.

I am just guessing here. Maybe there are some sound cards that will record audio that high but I'm sure they would not be consumer products.

dmizzel

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Posts: 112
Joined: April 2005

Posted: April 16 2005,03:33

edit, I meant to type they "would not" be capable.

AwPhuch

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Posts: 1404
Joined: April 2004

Posted: April 18 2005,21:40

Perhaps you should run any requests about radio amateur stuff by ke4nt1...as I recall he has "TONS" of stuff for radio amateru stuff.

Oh and his username here is his callsign (in case you didnt know)

Brian
AwPhuch

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3 replies since Mar. 19 2005,13:44

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