Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-28 Thread David Cutter
You could try 2 x 12V fans in series to give a bigger cooling area but smaller current; I did this once on a noise-critical application. In terms of S units at the other end, turning down the power, say 25% makes sense. David G3UNA I run a 4" (120mm) computer case fan that the specs say dr

Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-28 Thread Phil Wheeler
red Jensen" To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top) Before selling my KPA100 and KAT100, I used my K2 in RTTY contests. I stuck an old computer brushless DC muffin fan down over the warmest part

Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-28 Thread Kevin Stover
I have never heard of a third party replacement heat sink for the K2/100. I run a 4" (120mm) computer case fan that the specs say draws all of .15 amps, 1.8 watts @ 12V, at full speed. It probably doesn't need to turn that fast to adequately cool the heat sink so the current draw could be much l

Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-28 Thread Paul Metzger
AM From: "Fred Jensen" To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top) Before selling my KPA100 and KAT100, I used my K2 in RTTY contests. I stuck an old computer brushless DC muffin fan down ove

Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-28 Thread Fred Jensen
Before selling my KPA100 and KAT100, I used my K2 in RTTY contests. I stuck an old computer brushless DC muffin fan down over the warmest part with a little square of velcro, blowing down. I could run 100W [generally didn't but could] and the heat sink stayed almost cool. I don't think you h

Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-28 Thread Jim Brown
On Sat,9/27/2014 5:54 AM, Don Wilhelm wrote: Take a look at the K2 Auxiliary KPA100 Cooling Fan Yes. And almost any generic muffin fan will push some air across a heat sink or into a power amp to improve air flow. I have a couple of 12V vans with power poles on them that I deploy as needed.

Re: [Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-27 Thread Don Wilhelm
Take a look at the K2 Auxiliary KPA100 Cooling Fan designed by Tom Hammond N0SS (SK). It is on his website maintained by the MMARC at http://www.mmccs.com/mmarc/n0ss/ Scroll down the opening page to K2 Specific Files, and then scroll down that page to the link to the pdf file. 73, Don W3FPR

[Elecraft] Any larger or more efficient heatsinks available for the K2/100PA (radio lid/top)

2014-09-26 Thread Paul Metzger
__ 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: htt