[Elecraft] K3 - Power cable voltage drop

Don Wilhelm donwilh at embarqmail.com
Sat Dec 28 10:59:46 EST 2019


Better precision than a battery can be found by using a precision 
voltage regulator.  Take a look at the Precision Voltage Source on my 
website www.w3fpr.com.

73,
Don W3FPR

On 12/27/2019 5:53 PM, Bill Frantz wrote:
> A simple reality test for a volt meter is to measure a fresh battery. 
> Zinc/carbon or Alkaline should show about 1.56 volts. (I learned this 
> test from the bias setting instructions for a Dynakit Stereo 70 
> amplifier. They built the amp so the test point read 1.56 volts when the 
> bias is correctly set and suggested calibrating your meter with a 
> battery. In that era, the zinc/carbon battery was what ran almost all of 
> the flashlights (torches for for English speakers) in the world.
> 
> 73 Bill AE6JV
> 
> On 12/23/19 at 11:30 PM, rmcgraw at blomand.net (Bob McGraw K4TAX) wrote:
> 
>> A good, known accurate DVM is an asset to any station.  Use it to 
>> determine if the others are accurate.  There are several good brands 
>> available.   A DVM that is not accurate is worse than no DVM at all.
>> My choice of many years ago is my Fluke 77.   After I tapped it with 
>> too much voltage, I sent it to Fluke for repair and calibration.  I am 
>> confident when I make a measurement it is accurate without question.
> -------------------------------------------------------------------------
> Bill Frantz        | The first thing you need when  | Periwinkle
> (408)356-8506      | using a perimeter defense is a | 16345 Englewood Ave
> www.pwpconsult.com | perimeter.                     | Los Gatos, CA 95032
> 
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