Re: How can I subtract one frequency from another ???

Andrew Holme wrote: 
Frank wrote:

So, the next question is (now that I know what "kind" of device to
use) what is the best mixer for this application.

Is this a one IC solution, or do I have to design a circuit to my
specification?
Can I use the internal mixer of a max038, an XR2206, or even a 565
PLL?

What do you suggest for a simple low cost readily avalible mixer?
Can they be designed with op amps?



Maybe just an XOR gate? Follow it by a low pass filter.
.

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