Google brings up many sources for Elina. Here's one: http://www.myofficesupplyzone.com/2-193870011-B0038OT78G-Elina_HDF6015L12MB__60_x_60_x_15_mm_236_x_236_x_059_inches_12_Volt_Cooling_Fan
Steve N4LQ ----- Original Message ----- From: "Joe Planisky" <[email protected]> To: "Elecraft List" <[email protected]> Sent: Thursday, May 27, 2010 2:28 PM Subject: Re: [Elecraft] [K3] K3 fan noise, part XXLIV > Since the responses to my inquiry about K3 fan brands/models have > virtually stopped, I thought I'd post the results. There are indeed > at least 2 different fans in use in K3s: > > Elina HDF6015L-12LB-1 and UTEC AT6015L-12L2B-ND2 and ND5 > > The Elina fans are made by Inaba Denki Sangyo, a Japanese company. > You can find specs for this fan at > http://www.europeanthermodynamics.com/Fans&Blowers/elina%20fan_eng.pdf > > The UTEC fans are made by United Thermal Engineering Corp. Their > office is in San Jose, CA. but their factories are in Japan, Taiwan, > and China. > http://www.utecusa.com/products/pdffiles/pid_1-45-152_%28SPEC%29AT6015L-12L2B%20ND1%2812-22-08%29.pdf > > According to the published specs, the UTEC fans have a slightly higher > rated speed (3000 rpm vs 2800 rpm), more airflow (15.4 cfm vs 10.6 > cfm), higher static pressure (2.21mm vs 1.5mm),and higher noise (24.8 > dBA vs 21 dBA) than the Elina fans. They also operate over a wider > range of voltages than the Elina fans (6-13.8v vs 10.2-13.8v). Both > use ball bearings. Based just on the specs, I would expect the UTEC > fans to be slightly more powerful and slightly louder. > > From the responses I received, it looks like the Elina fans were used > on earlier K3s with serial numbers < 900 or so. > > I received responses from 13 people (including myself), covering 13 > K3s. If the reporter used words or phrases like "quiet", "silent", > "never hear them", I counted their response as "quiet". If they used > words or phrases like "loud", "annoying", "I can hear them", I counted > their response as "loud" > > UTEC Quiet 3 > UTEC Loud: 4 > Elina Quiet: 6 > Elina Loud: 0 > > With such a small sample of self-reported anecdotes of a subjective > perception, the results of this little survey are statistically > virtually meaningless. However, they do suggest a direction for > further research in that no one reported loud Elina fans. > > I may have a chance to do some side-by-side comparisons between my K3 > and an earlier SN K3 in a few weeks. If that turns up anything > interesting, I'll report it here. > > Thanks to everyone who took the time and effort to respond to my > request. > > 73 > -- > Joe KB8AP > > > On May 23, 2010, at 9:19 AM, Joe Planisky wrote: > >> The topic of K3 fan noise seems to come up every now and then, and >> each time it does there's a chorus of people who say the fans in their >> K3 are absolutely silent, and an equal chorus of people who say the >> fans are clearly audible. >> >> ... > >> However, I'm also wondering if Elecraft has changed brands or models >> of fans from time to time. It's possible that some brands/models >> might be quieter than others. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
