Posted by
Sarah K. on
Nov 25, 2007; 12:16am
URL: http://elecraft.85.s1.nabble.com/K2-AGC-Threshold-Too-Low-tp367004p367011.html
On Nov 23, 2007, at 9:02 PM, Leigh L Klotz, Jr. wrote:
> Circuit Specialists has meters and they throw in a free gift for
> over $50. Or Fry's retail this weekend. B&K is an OK economy
> brand available at both places. The cheap analog meter might cause
> you problems down the road with sensitive components on the
> resistance scale, so keep it for analog peaking of small voltages.
Actually, my "cheap" analog meter did come from Circuit Specialists!
I got it free when I bought my oscilloscope.
Having now measured my bench power supply (not my precious K2!) with
just about everything I own that measures voltage, I'm inclined to
believe that the Circuit Specialists freebie DMM is telling the
truth; it matches the meter built into the bench power supply. My
other tiny pocket-size DMM measures about a tenth of a volt higher,
and my analog meter from when I was nine measures about a tenth of a
volt lower and hasn't been calibrated since about 1977.
So at the moment, I'm going to accept the freebie DMM's results...
unless somebody knows how many voltmeters it takes to establish a
quorum... :-)
But I'm still thinking that, sooner or later, it would be nice to
have a "nice" meter... so again, if anyone can recommend one that
isn't *too* expensive; I'd be interested to hear. Maybe a bench meter
rather than a handheld? $100 to $200ish? And maybe something from
Circuit Specialists, because, you know, if I spent more than $50 on
my meter, I could get another meter for free! Maybe that would would
constitute a quorum? :-)
Sarah
> Leigh/WA5ZNU
> On Fri, 23 Nov 2007 6:47 pm, Sarah K. wrote:
>> Well, I searched around a bit and found *another* cheap DMM, which
>> seels to be reading about 0.12 to 0.14 volts higher than the first
>> one. Now I don't know which one to believe! :-)
>>
>> ("Carry one watch, or three, but never two...")
>>
>> Now I need to find my *other* other meter, the analog one I got
>> when I
>> was nine years old, and see what it thinks...
>>
>> Sarah AF6FH
>>
>> On Nov 23, 2007 4:47 PM, Ron D'Eau Claire <
[hidden email]> wrote:
>>> Hi and welcome!
>>>
>>> It doesn't happen too often, but have you checked the accuracy
>>> of your
>>> "cheap" DMM? If you don't have anything to compare it with, you
>>> can get an
>>> idea of its condition by measuring the voltage across a fresh
>>> alkaline
>>> battery. It should read about 1.57 and 1.58 VDC.
>>>
>>> Ron AC7AC
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