Specifically, the application is one which uses a HAM radio transciever
utilizing approx 20W-100W power and a Class E transmitter to drive
data signals and power from an external coil to a series of smaller
receiver coils which are implanted in biological tissue for biomedical
application. I have to police/enforce the research personnel to ensure
limits regarding std practices are not exceeded in regards to duration
and length of RF exposure fothe patient. Of course I need to do this
independently, because in this situation relying on their "good word"
or verbal agreement isn't sufficient. I have to be able to be able to
1.) determine if there is a 570Hz to 4MHz signal present, and 2.)
determine if it is encoded or modulated to carry the power and data
signals. Not up my alley exactly, but I need to get it done. If there
is an expansion card or USB interface device for PC, that would be
preferable to aquiring an entire HAM rig. Any help appreciated. - Lars


Bob Bob wrote:
A fast A/D front end on a PC, sampling at a minimum of 8MHz. Use the PC
as a DSP engine. I suspect that these would be available as a plug in
PCI card...

You can get an idea of what this is about by the plethora of sound card
based analysis systems now available (with a max sample rate of 44kHz or
thereabouts. Depending what you are doing and are real stingy a computer
controlled HF receiver and the soundcard interface might do it for you too.

Wanna be a bit more specific of your requirements and application?

Cheers Bob VK2YQA

wrote:

Anyone have a suggestion for capure and analysis that does not involve
thousands of dollars?