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Hi,

I have seen many logarithmic DETECTORS, but I would like to find a logarithmic pre-AMPLIFIER that could operate from about 1MHz to 30MHz region.

I would like to use it for experimenting with different RF blocks.

I have seen this circuit which seems simple, but this is only for audio and I do not know if a fast opamp (which one?) will achieve the same result on HF.

My preference is on discrete circuits if possible (but not limited to them).

Could you help?

Thanks