Re: [Elecraft] solder iron correct temp in C for K3
Or of course, use a converter program on your smart phone!!! ;-) 73 de David, M0XDF On 27 Apr 2012, at 04:59, Don Wilhelm 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. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
I just push the switch on my Weller and watch it change from F to C. I love simple. Hehehehehe OK, back in my hole, Ron, KU7Y SOWP 5545M Arizona Outlaws Contest Club Brenda, AZ (Winter) Caldwell, ID (Summer) k...@qsl.net http://www.hatpinsandmore.com KX3 #0062 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
Another trick, you can do C-F in your head: Double the centigrade temperature, subtract 10% from the product, and add 32 to get Fahrenheit. 10 degrees C = (2*10-2) + 32 = 50 degrees F F-C is not so slick, but works: Subtract 32 from the Fahrenheit temperature, add 11% of the result to itself and divide by 2 50 degrees F =((50-32) + 1.98)/2 = 10 degrees C. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
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-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on behalf of Matt Zilmer [mzil...@verizon.net] Sent: Thursday, April 26, 2012 11:49 PM To: d...@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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
On 4/27/2012 6:55 AM, elecraft-requ...@mailman.qth.net wrote: Re: [Elecraft] solder iron correct temp in C for K3 I try to minimize the number of formulas I need to remember. This one has served me well 1.8C=F-32 Replace the known value, and solve for the unknown. Or if you only need to be close enough for government work, you can do it in your head and use 2 instead of 1.8, and use a bit of Kentucky windage to reduce the result a smidge. -- *David O'Leary* AC2GB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
What do all these metric conversion posts have to do with the OP's question? He asked what the temperature of his iron should be to solder K3 boards and received the CORRECT ANSWER almost immediately. Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Fri, 27 Apr 2012 12:47:23 +, hawley, charles j jr c-haw...@illinois.edu wrote: 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-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on behalf of Matt Zilmer [mzil...@verizon.net] Sent: Thursday, April 26, 2012 11:49 PM To: d...@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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
Pretty cool trick, Monty. But I'll stick with just touching the tip of the iron to my tongue. Much less painful than doin' the math! ;o) Terry, W0FM -Original Message- From: Monty Shultes [mailto:mon...@mindspring.com] Sent: Friday, April 27, 2012 5:55 AM Subject: Re: [Elecraft] solder iron correct temp in C for K3 Another trick, you can do C-F in your head: Double the centigrade temperature, subtract 10% from the product, and add 32 to get Fahrenheit. 10 degrees C = (2*10-2) + 32 = 50 degrees F F-C is not so slick, but works: Subtract 32 from the Fahrenheit temperature, add 11% of the result to itself and divide by 2 50 degrees F =((50-32) + 1.98)/2 = 10 degrees C. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
How simple. It goes into my desktop reference. Thanks, Don! 73, Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Thursday, April 26, 2012 10:59 PM To: k6...@foothill.net Cc: Elecraft Reflector Subject: Re: [Elecraft] solder iron correct temp in C for K3 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
:-) Funny! 73, Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Terry Schieler Sent: Friday, April 27, 2012 11:45 AM To: 'Monty Shultes' Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] solder iron correct temp in C for K3 Pretty cool trick, Monty. But I'll stick with just touching the tip of the iron to my tongue. Much less painful than doin' the math! ;o) Terry, W0FM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
It won't work for SMD stuff, but over the years I've had great success using a classic Ungar 27W cartridge (which I seem to remember was around 850°F) with a screw-ON 1/8 screwdriver tip for just about everything but the heaviest jobs. This includes lots of building stuff with standard through-hole DIP components. I never overcooked anything. The beauty of a big hot iron is it lets you get in, heat the work and get off quickly. Low wattage irons just cook the components and the board. Nowadays, like everybody else, I use a very small iron that produces a 750°F tip temperature for the small parts and dense connector pins, but I still use the old one for most everything else. It's the curse of the OFs: our eyesight continually gets worse as the parts continually get smaller. 73... Randy, W8FN On 04/26/2012 18:26, 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. Smith Bradford __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
Randy, I must make a comment about a couple of your statements. One, we are age challenged not OF's. Come on got to be PC. Eh? The other is the parts aren't actually getting smaller. We have to hold them farther away cause of our glasses so they look smaller! OK, it was all tongue in check. The blasted things are getting so darn small even magnifying glasses don't work for this OF's eyes! Tim Herrick, KQ8M Charter Member North Coast Contesters k...@kq8m.com AR-Cluster V6 kq8m.no-ip.org User Ports: 23, 7373 with local skimmer, 7374 without local skimmer Server Ports: V6 3607, V4 Active 3605, V4 Passive 3606 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Randy Farmer Sent: Friday, April 27, 2012 2:15 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] solder iron correct temp in C for K3 It won't work for SMD stuff, but over the years I've had great success using a classic Ungar 27W cartridge (which I seem to remember was around 850°F) with a screw-ON 1/8 screwdriver tip for just about everything but the heaviest jobs. This includes lots of building stuff with standard through-hole DIP components. I never overcooked anything. The beauty of a big hot iron is it lets you get in, heat the work and get off quickly. Low wattage irons just cook the components and the board. Nowadays, like everybody else, I use a very small iron that produces a 750°F tip temperature for the small parts and dense connector pins, but I still use the old one for most everything else. It's the curse of the OFs: our eyesight continually gets worse as the parts continually get smaller. 73... Randy, W8FN On 04/26/2012 18:26, 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. Smith Bradford __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
I cheat. My Hakko soldering station is calibrated in both C and F Ron AC7AC -Original Message- Another trick, you can do C-F in your head: Double the centigrade temperature, subtract 10% from the product, and add 32 to get Fahrenheit. 10 degrees C = (2*10-2) + 32 = 50 degrees F F-C is not so slick, but works: Subtract 32 from the Fahrenheit temperature, add 11% of the result to itself and divide by 2 50 degrees F =((50-32) + 1.98)/2 = 10 degrees C. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
Smith, I suggest you increase the iron temperature to 400 degC (750 degF). The other suggestion I can offer is to use 63/37 allow solder (eutectic) with a mildly reactive flux (such as Kester 287). Save the large diameter Kester 44 (highly reactive flux) for antenna work and other jobs where there may be a substantial amount of oxidation on the leads 73, Don W3FPR On 4/26/2012 7:26 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. Smith Bradford W9HAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
I usually go between 370C and 400C or about (700F-750F) for most jobs. Setting your iron to low will mean that it will take longer for the solder to melt and giving more time for the heat to travel into the component and possible damage.when working on boat-anchors with point to point wiring, I go a little hotter when desoldering. but for the K3 375C (700F) will be fine. personally I prefer 63/37 solder it has a much shorter plastic temperature range where the solder is more like a slush and will make cold joints. Davd Moes VE3DVY I On 4/26/2012 7:26 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. Smith Bradford W9HAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
Hi! I 375 to 400 C (700-750F) for normal soldering. When using wick (which acts like a heat sink) I step up the temperature to the 800F (425C) range. A hot iron will *not* damage your board or components. What *will* damage the board or components is leaving the iron in place for too long. Time is what de-bonds traces. I consider 4 or 5 seconds maximum time for soldering. If it takes longer than that, my iron is too cold (assuming it is clean). I add a couple of seconds if I'm using wick, but never more than ten seconds -and that's rare. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of W9HAK Sent: Thursday, April 26, 2012 4:26 PM To: Elecraft listserve Subject: [Elecraft] solder iron correct temp in C for K3 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. Smith Bradford W9HAK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
Or, in google just type something like: 750F to C Works for all kinds of different units of measure. On 4/26/2012 10:59 PM, Don Wilhelm 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] solder iron correct temp in C for K3
I'm not fluent in metric and use this link all the time: http://www.worldwidemetric.com/Measurements.html 73, Bob K2TK ex KN2TKR (1956) K2TKR On 4/27/2012 12:32 AM, Gary K9GS wrote: Or, in google just type something like: 750F to C Works for all kinds of different units of measure. On 4/26/2012 10:59 PM, Don Wilhelm 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
