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hpr3454 :: Engineering Notation

Ken runs through the most common Engineering Notation used in HAM radio.

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Hosted by Ken Fallon on 2021-10-28 is flagged as Clean and is released under a CC-BY-SA license.
Tags: giga,mega,kilo,milli,micro,nano,pico,SI, International System of Units.
Listen in ogg, spx, or mp3 format. | Comments (3)

Part of the series: HAM radio

A series about all things Amateur Radio/HAM Radio.

Engineering Notation

Learn this table

 giga G 109  1,000,000,000
 mega M 106      1,000,000
 kilo k 103          1,000
                         1
milli m 10−3             0.001
micro μ 10−6             0.000,001
 nano n 10−9             0.000,000,001
 pico p 10−12            0.000,000,000,001

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Comment #1 posted on 2021-10-31T11:04:54Z by Kevin O'Brien

Odd word use

Do they really call exponents "suffixes" where you're from? I've never heard that usage before.

Comment #2 posted on 2021-11-02T09:08:04Z by Ken Fallon

suffixes

They probably don't but I did. The goal of this series is to communicate via audio the location of the symbol.

Although looking at the definition it's not a bad word to use.

https://www.thefreedictionary.com/Suffixes.htm

Suffixes are morphemes (specific groups of letters with particular semantic meaning) that are added onto the end of root words to change their meaning. Suffixes are one of the two predominant kinds of affixes—the other kind is prefixes, which come at the beginning of a root word.

Comment #3 posted on 2021-11-04T01:25:38Z by Trey

Great reminder

Thanks, Ken.

I have been using these prefixes for decades, and take them for granted. Thanks for the reminder that this is not common knowledge.

It also reminds me of a question for which I have never found a good answer. In North America, capacitance, is expressed in uF (micro Farads) or pF (pico Farads). But nF (nano Farads) is not used. Instead you will see values like 10,000 pF or 0.01 uF.

Go figure.

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