And one more... particularily useful for getting a quick and dirty estimate.
It turns out that 61 F = 16 C and 82 F = 28 C.  

73, Tom 


-----Original Message-----
From: Don Wilhelm [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, June 27, 2007 12:01 PM
To: KJ3D
Cc: [EMAIL PROTECTED]; 'Wolfgang, Larry, WR1B'; [email protected]
Subject: Re: [Elecraft] K2 Glitch on Field Day

There is also the conversion I use because I never can remember when and
where to add or subtract 32 degrees without thinking about it.

Both scales coincide at -40 degrees, so simply add 40 degrees to the
temperature to start with, then multiply by 5/9 or 9/5 depending on whether
you are converting to a smaller (F to C) value or a larger (C to
F) value.  After doing the multiplication, subtract 40 degrees and you are
done.

73,
Don W3FPR

KJ3D wrote:
> For the benefit of those of us who struggle with remembering the two
> conversion formula for degrees F to degrees C (or vice versa) here is a
neat
> little algebra expression I teach:
> 
> 5F - 9C = 160
> 
> Substitute and solve for the remaining unknown.

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