$129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

[Dieter]

> So the question is whether you can make a good PC card digital 
> oscilloscope for $100.00.  You need an oscillator, frequency divider, 
> PLL, sample & hold, and DAC as well as the PCIe interface.  I seriously 
> doubt that this is possible for $100.00 but it does depend on the 
> maximum input frequency you wish to use, sample rate, and the accuracy 
> (and number of bits) needed.  Actually, you can spend over $100. on a 
> good DAC

You can get a 2.4 GHz spectrum analyzer for $129.

http://www.dunehaven.com/lcsa.html

If a 2.4 GHz spectrum analyzer can be sold for $129, why not a lower
frequency unit?