🚀 go-pugleaf

Might be a good idea to read H&H from the beginning.  You want an AC
amplifier with a gain of about 50.  (Remember that dBm compares power,
but amplifier gain is normally given as voltage gain, and if input
and output impedances are equal, dB power gain = 20 log[10] voltage gain.

The capacitors in the AC amplifier must be large enough to handle audio
frequencies.  That means that their reactance at the lowest frequency of
interest (maybe 50 Hz) must be appreciably lower than the resistance of
the resistors that are in series with them.

You will either need split power supplies (e.g., two 9-volt batteries),
or need to bias the op-amp for single supply operation.

Finally, when dealing with millivolt-level signals, use a low-noise
opamp, such as the TL081/2/4 family (available at Radio Shack).

-- 
:- Michael A. Covington     internet mcovingt@uga.cc.uga.edu 
:- Artificial Intelligence Programs       phone 706 542-0359
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