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?