Xref: utzoo rec.ham-radio:18104 sci.electronics:10357
Path: utzoo!attcan!uunet!wuarchive!udel!haven!mimsy!fe2o3!michael
From: michael@fe2o3.UUCP (Michael Katzmann)
Newsgroups: rec.ham-radio,sci.electronics
Subject: Re: How does one build LOG AMPS (>60dB dynamic range)
Message-ID: <321@fe2o3.UUCP>
Date: 27 Feb 90 17:07:15 GMT
References: <596@massey.ac.nz>
Reply-To: michael@fe2o3.UUCP (Michael Katzmann)
Followup-To: rec.ham-radio
Organization: Rusty's BSD machine at home
Lines: 14

In article <596@massey.ac.nz> GMoretti@massey.ac.nz (Giovanni Moretti) writes:
   >I've build a spectrum analyser (0-100MHz) that has a 10.7MHz IF (from
   >HAM-RADIO years ago) and it works quite well but I'm not happy with the
   >log-amp/detector.  
   >
   >
   >How does one make real log amps that don't need lots of preset adjustment?
   >
   >Ideas ??
   >
   >Giovanni
   >
Try Plessey. I can't find my data book but I'm sure they make some with
at least 80dB dynamic range.