On 1/9/06, lucid@magnet.ca wrote: > > Can anyone guide me towards a relatively budgetary solution (ideally > PC based) for logging a broad spectrum or multiple narrower spectrums > of Extra Low Frequency electro-magnetic radiation in the .01-2000 Hz > range? Something like a simple card for PC with external antenna of > some sort would be great. Things get pretty interesting down there. The PC itself is a loud noise source. Look at what's done for "Whistlers" and ELF reception, should give you some ideas. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist