[Elecraft] [Way (OT)] Pedantic comment about metric usage

Fred Jensen k6dgw at foothill.net
Tue Jul 30 18:58:33 EDT 2019


Correct, except when kilomegacycles per second was in vogue [and giga 
apparently had yet to become popular], it was abbreviated KMcs.  
Technically, it should probably have been KMcps, which I seem to 
remember it sometimes was.  Kilo in that era was upper case, as in 500 
Kcs.  Then again the abbreviation Kcs was sometimes itself abbreviated 
to Kc.  All of this, and the ever popular "Colpitts Oscillator Question" 
could be found on the FCC license exams of the day.

It's similar for capacitors.  In that era, they were mainly mf for 
microfarads [10^-6] or mmf for micromicrofarads [10^-12].  I do not 
remember any that were kmf [kilomicrofarads - 10^3 mf].  No wonder we in 
the USA are going metric inch by inch...

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 7/30/2019 1:49 PM, Don Wilhelm wrote:
> Skip,
>
> The proper way to represent units with kilo (10 exp 3) in it is with a 
> lower case "k".
> "m" stands for milli (10 exp -3) while "M" stands for Mega (10 exp 6).
>
> Hz is capitalized because it is a man's name - Hertz.
>
> 73,
> Don W3FPR
>



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