[Elecraft] DMM Recommendation

Ron D'Eau Claire rondec at easystreet.com
Sun Sep 3 14:43:21 EDT 2006


John, WA8KNE wrote:

Good point on the refresh time.  I never liked tuning for a peak or 
dip using a digital meter.  Guess my analog brain doesn't like living in 
a digital world.  I've picked up old analog VTVMs for a buck or two at 
hamfests and converted them to FET op amps in place of the tubes.  Zero 
drift/warm up and all the advantages of an analog meter that runs on a 
9v battery.

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For peaking adjustments, even some of the cheap(er), slower DMMs like the
Radio Shack I mentioned have a relative level scale - a row of dots below
the numbers - that moves according to changes in the voltage or current
level. That scale works quite fast to show a peak or dip even though the
numeric display takes a few seconds to update. It's something I recommend
one look for if they are going to rely on only their DMM for making
adjustments. 

Ron AC7AC 




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