[Elecraft] solder iron correct temp in C for K3

[hawley, charles j jr]

I've always liked this one because it demonstrates a real understanding, that there are 1.8 F deg in one C deg. And you can deal with the endpoints from either conversion direction.
Chuck, KE9UW
aka Jack, BMW Motorcycles

Chuck, KE9UW
aka Jack, BMW Motorcycles

________________________________________
From: elecraft-bounces at mailman.qth.net [elecraft-bounces at mailman.qth.net] on behalf of Matt Zilmer [mzilmer at verizon.net]
Sent: Thursday, April 26, 2012 11:49 PM
To: don at w3fpr.com
Cc: Elecraft Reflector
Subject: Re: [Elecraft] solder iron correct temp in C for K3

Nice memory aid!

matt

On Thu, 26 Apr 2012 23:59:05 -0400, you wrote:

>Actually, the conversion is easier to remember than those two formulas.
>The two scales coincide at -40 degrees.
>So for the conversion (either way) first add 40.
>Then if the conversion is from Centigrade to Fahrenheit multiply by 9/5
>(you will be going to a greater number), but if the conversion is from
>Fahrenheit to Celcius, multiply by 5/9 (because the result will be a
>smaller number).  Finally, subtract 40 to get your result.
>
>The skeptical may try several passes with their remembering when to add
>or subtract 32 degrees, but this formula always works.
>
>73,
>Don W3FPR
>
>On 4/26/2012 10:10 PM, Fred Jensen wrote:
>> On 4/26/2012 4:26 PM, W9HAK wrote:
>>> I have a new solder iron that is temperature controlled in degrees
>>> C. What temp should I set the iron for work on  the K3? I am using
>>> 60/40 rosin core, small diameter solder. While using solder wick to
>>> clean out the holes from the 12 dc mod kit I used 300c and dipped the
>>> wick in solder flux. I pulled the solder wick across the land when
>>> the solder was liquid, it cleaned the holes on the first pass.
>> F = 32 + (9 * C) / 5
>> C = [(F-32) * 5] / 9
>>
>> 73,
>>
>> Fred K6DGW
>> - Northern California Contest Club
>> - CU in the 2012 Cal QSO Party 6-7 Oct 2012
>> - www.cqp.org