[ARC5] The BC-221 low frequency tank circuit puzzle.

[D C _Mac_ Macdonald]

Upper case "K" is used to indicate a Kelvin temperature. 
 
Lower case "k" is used to designate kilo or 1000 since "K" is already in use! 
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* Oklahoma City, OK * 
* USAF, Ret'd 61-81 * 
** FAA, Ret'd 94-10 * 
* * * * * * * * * * * 
 
 

 
> Date: Mon, 15 Feb 2016 15:37:59 +0000
> From: mstangelo at comcast.net
> To: navy.radio at gmail.com
> Subject: Re: [ARC5] The BC-221 low frequency tank circuit puzzle.
> CC: hwhall at compuserve.com; arc5 at mailman.qth.net
> 
> Isn't the correct symbol for 1000 a lower case k?
> 
> Mike N2MS
> 
> 
> ----- Original Message -----
> From: Nick England <navy.radio at gmail.com>
> To: Wayne Hall <hwhall at compuserve.com>
> Cc: ARC-5 <arc5 at mailman.qth.net>
> Sent: Sun, 14 Feb 2016 21:56:52 -0000 (UTC)
> Subject: Re: [ARC5] The BC-221 low frequency tank circuit puzzle.
> 
> M = 1000 in Roman numerals. Mille in Latin.
> M or m is still commonly used in commercial pricing for 1000 items.
> Bottles $350/M for example. CPM = cost per 1000 ad impressions.
> 
> K for 1000 is relatively recent usage I think.
> 
> Nick England K4NYW
> www.navy-radio.com
> 
> On Sun, Feb 14, 2016 at 4:43 PM, <hwhall at compuserve.com> wrote:
> 
> > Could this be a French-inflicted unit abbreviation? :-)
> > Mille in Fracais is 1000.
> >
> > Wayne
> > WB4OGM
> >
> > -----Original Message-----
> > From: Richard Knoppow <1oldlens1 at ix.netcom.com>
> > To: arc5 <arc5 at mailman.qth.net>
> > Sent: Sun, Feb 14, 2016 12:38 pm
> > Subject: Re: [ARC5] The BC-221 low frequency tank circuit puzzle.
> >
> >    Didn't see this when I posted, I was referring to the same thing.
> >
> > On 2/14/2016 7:57 AM, Glen Zook via ARC5 wrote:
> >
> > When looking at schematics from the 1930s and even into the 1940s, for
> > some reason, where the values of especially resistors are concerned, a
> > number of manufacturers used an "m" instead of a "k" to indicate a
> > multiplier of 1000.
> >
> >
> >
> > The first time this happened to me, I started scratching my head trying to
> > figure out why all the very high value resistors.  Then, I realized that
> > the "m" was used instead of a "k".
> >
> >
> >
> > Glen, K9STH
 		 	   		  
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