Re: [Elecraft] Quiet fans for K3
I have learned this also applies to sports car racing Fred. This was a difficult concept to explain to USAF colonels too. I only use speakers when I'm doing something else in the shack and listening, not operating, just like Jim. I can avoid any fan noise and unwanted telephone calls. 73, Bill, K8TE, SMSgt, USAF, ret. Message: 1 Date: Wed, 3 Feb 2016 16:25:21 -0800 From: Fred Jensen <k6...@foothill.net> To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Quiet fans for K3 Message-ID: <56b29a71.1050...@foothill.net> Content-Type: text/plain; charset=windows-1252; format=flowed My K3 has fans? I admit, I'm all headphones, all the time. I'm vaguely aware that my KPA500 has a fan, I sometimes hear it in the RTTY Round-Up. I once had to explain the Fundamental Axiom of Engineering to a USAF General who was continually dissatisfied with the schedule increases with each of his Change Orders: "Sir ... Good, Fast, Cheap. Choose two." 73, Fred K6DGW - Northern California Contest Club - CU in the Cal QSO Party 1-2 Oct 2016 - www.cqp.org On 2/3/2016 2:35 PM, Jim Brown wrote: > Exactly right, Clay. It is, indeed, a matter of compromise between cost > and how many customers care about whatever the characteristic you're > trying to optimize. At least 90% (and 100% of my serious operation) is > wearing headphones, and the times I'm using the speaker I'm monitoring > while in the shack doing something else. So I've NEVER been bothered by > the fans in my K3/100. > > 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
You can BEND the laws of physics, but you can't break them. Within the package size dictated, you can only move so much air in a given timeframe, "silently". Quiet is at very best a secondary consideration when spec'ing a fan to protect a multi $K transceiver. If you are really interested in all the factors that I consider when setting the specs for a part in a thermal design, contact me offline. BOTH of the fans that Elecraft have chose/are using are quality ball-bearing units, cool properly, and meet the other engineering limitations. You can go broke purchasing "boutique" parts for ancillary purposes. All that aside... I will likely IMMEDIATELY replace my stock fans with units that meet the airflow, et al requirements, but that meet MY requirements, too. I'll put the stock fans in the box that will hold any OEM parts needed to return the set to 100% original when my heirs sell my estate. Have a super day! __ Clay Autery On 2/3/2016 11:31 AM, Brendon Whateley wrote: > So a question for the Elecraft team: Is there a reason you guys don't use > quieter fans straight from the factory. > > I had a business partner who hated fan noise in computers, so would always > replace the stock fans with quieter ones (better blade profiles and lower > vibrations) and the cost never seemed to be much more than the stock ones. > Even though I thought the standard fans didn't make noise, the difference > was quite obvious when you ran a pair of machines, one upgraded, the other > not. Lots of people don't care, but some care a lot, if the price is > similar, why not start with the quietest ones? > > - Brendon > KK6AYI > > On Sat, Jan 30, 2016 at 3:15 PM, Dave Hachadorian> wrote: > >> Search the archives for "Noctua." >> >> You will find numerous references to the Noctua NF-A6X25R, available at >> Newegg for $15. Use the mounting hardware that comes with the Noctua, and >> save all the old fan stuff so you can restore it all to original if You >> ever need to. >> >> I installed these about a year ago, and they are indeed quieter and blow >> more air. For a 100 watt RTTY contest, I set the fans at minimum speed = >> 2, and they never speed up from that level, despite the heavy duty cycle. >> >> The most irritating part about the stock fans was the whiney noise they >> would make while spooling up and down as they changed speed. >> >> If you're not a contester, you may never hear the fans, so it may not be >> an issue :) >> >> Dave Hachadorian, K6LL >> Yuma, AZ >> >> >> >> -Original Message- From: drewko >> Sent: Saturday, January 30, 2016 3:34 PM >> To: elecraft@mailman.qth.net >> Subject: [Elecraft] Quiet fans for K3 >> >> What are the current options for quiet fans for the K3? My original fans >> are pretty quiet but at this time of the year when the windows are >> closed and the ambient noise level is nil, the fan noise really starts >> to bug me. It's the very slight rattle they make when they start winding >> up.. (In the din of summertime, can't hear myself think, let alone fan >> noise.) >> >> Sources? Prices? >> >> Are the newer Elecraft fans quiet? My PA is only a couple of years old >> so the fans are pretty recent model. >> >> 73, >> Drew >> AF2Z >> __ >> 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 >> Message delivered to k6ll.d...@gmail.com >> __ >> 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 >> Message delivered to bren...@whateley.com >> > __ > 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 > Message delivered to caut...@montac.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
So, what is noise? It's energy. Some of it goes into the fan and moves air, some is from turbulence off the blades, and some heats the bearing. There are quieter fans that still move lots of air. They have carefully shaped blades and all of the flashing is cleaned off so the edges are smooth. Extra steps that cost more. I've replaced a lot of computer fans. If the computer sits next to me, I get quiet ones. If it's in a server closet, I use higher-speed, noisy fans, preferably ones with a very high MTBF, because I won't be there to hear the server get quiet. 73 -- Lynn On 2/3/2016 1:26 PM, Clay Autery wrote: You can BEND the laws of physics, but you can't break them. Within the package size dictated, you can only move so much air in a given timeframe, "silently". __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Well, there are laws of economics for manufacturers, too. And they are at times more rigid than those in physics. Yes, I've been doing thermal design for 25 years. You give me a big enough pile of money, I'll deliver your target temp at target location, with So, what is noise? It's energy. > > Some of it goes into the fan and moves air, some is from turbulence > off the blades, and some heats the bearing. > > There are quieter fans that still move lots of air. They have > carefully shaped blades and all of the flashing is cleaned off so the > edges are smooth. Extra steps that cost more. > > I've replaced a lot of computer fans. If the computer sits next to > me, I get quiet ones. If it's in a server closet, I use higher-speed, > noisy fans, preferably ones with a very high MTBF, because I won't be > there to hear the server get quiet. > > 73 -- Lynn > > On 2/3/2016 1:26 PM, Clay Autery wrote: >> You can BEND the laws of physics, but you can't break them. Within the >> package size dictated, you can only move so much air in a given >> timeframe, "silently". > > __ > 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 > Message delivered to caut...@montac.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
My K3 has fans? I admit, I'm all headphones, all the time. I'm vaguely aware that my KPA500 has a fan, I sometimes hear it in the RTTY Round-Up. I once had to explain the Fundamental Axiom of Engineering to a USAF General who was continually dissatisfied with the schedule increases with each of his Change Orders: "Sir ... Good, Fast, Cheap. Choose two." 73, Fred K6DGW - Northern California Contest Club - CU in the Cal QSO Party 1-2 Oct 2016 - www.cqp.org On 2/3/2016 2:35 PM, Jim Brown wrote: Exactly right, Clay. It is, indeed, a matter of compromise between cost and how many customers care about whatever the characteristic you're trying to optimize. At least 90% (and 100% of my serious operation) is wearing headphones, and the times I'm using the speaker I'm monitoring while in the shack doing something else. So I've NEVER been bothered by the fans in my K3/100. 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Exactly right, Clay. It is, indeed, a matter of compromise between cost and how many customers care about whatever the characteristic you're trying to optimize. At least 90% (and 100% of my serious operation) is wearing headphones, and the times I'm using the speaker I'm monitoring while in the shack doing something else. So I've NEVER been bothered by the fans in my K3/100. I DO hear the fan in my KPA500 when I push the TX duty cycle, so I've guessing that a few bucks spent on making it quieter without compromising cooling would be appreciated by a much higher percentage of users. 73, Jim K9YC On Wed,2/3/2016 1:51 PM, Clay Autery wrote: Well, there are laws of economics for manufacturers, too. And they are at times more rigid than those in physics. Yes, I've been doing thermal design for 25 years. You give me a big enough pile of money, I'll deliver your target temp at target location, with So, what is noise? It's energy. Some of it goes into the fan and moves air, some is from turbulence off the blades, and some heats the bearing. There are quieter fans that still move lots of air. They have carefully shaped blades and all of the flashing is cleaned off so the edges are smooth. Extra steps that cost more. I've replaced a lot of computer fans. If the computer sits next to me, I get quiet ones. If it's in a server closet, I use higher-speed, noisy fans, preferably ones with a very high MTBF, because I won't be there to hear the server get quiet. 73 -- Lynn On 2/3/2016 1:26 PM, Clay Autery wrote: You can BEND the laws of physics, but you can't break them. Within the package size dictated, you can only move so much air in a given timeframe, "silently". __ __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
I would be lead to believe economics, Most will never be bothered by the noise of the stock fans. My hearing is a little messed up from being in the Navy and the fan noise added to the background noise. So I searched out an replacement, and the replacement fans have now made the radio a pleasure to listen to. But then again I hear things others don't and not hear things others do. From: Brendon Whateley <bren...@whateley.com> To: Reflector Elecraft <elecraft@mailman.qth.net> Sent: Wednesday, February 3, 2016 12:31 PM Subject: Re: [Elecraft] Quiet fans for K3 So a question for the Elecraft team: Is there a reason you guys don't use quieter fans straight from the factory. I had a business partner who hated fan noise in computers, so would always replace the stock fans with quieter ones (better blade profiles and lower vibrations) and the cost never seemed to be much more than the stock ones. Even though I thought the standard fans didn't make noise, the difference was quite obvious when you ran a pair of machines, one upgraded, the other not. Lots of people don't care, but some care a lot, if the price is similar, why not start with the quietest ones? - Brendon KK6AYI On Sat, Jan 30, 2016 at 3:15 PM, Dave Hachadorian <k6ll.d...@gmail.com> wrote: __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
So a question for the Elecraft team: Is there a reason you guys don't use quieter fans straight from the factory. I had a business partner who hated fan noise in computers, so would always replace the stock fans with quieter ones (better blade profiles and lower vibrations) and the cost never seemed to be much more than the stock ones. Even though I thought the standard fans didn't make noise, the difference was quite obvious when you ran a pair of machines, one upgraded, the other not. Lots of people don't care, but some care a lot, if the price is similar, why not start with the quietest ones? - Brendon KK6AYI On Sat, Jan 30, 2016 at 3:15 PM, Dave Hachadorianwrote: > Search the archives for "Noctua." > > You will find numerous references to the Noctua NF-A6X25R, available at > Newegg for $15. Use the mounting hardware that comes with the Noctua, and > save all the old fan stuff so you can restore it all to original if You > ever need to. > > I installed these about a year ago, and they are indeed quieter and blow > more air. For a 100 watt RTTY contest, I set the fans at minimum speed = > 2, and they never speed up from that level, despite the heavy duty cycle. > > The most irritating part about the stock fans was the whiney noise they > would make while spooling up and down as they changed speed. > > If you're not a contester, you may never hear the fans, so it may not be > an issue :) > > Dave Hachadorian, K6LL > Yuma, AZ > > > > -Original Message- From: drewko > Sent: Saturday, January 30, 2016 3:34 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] Quiet fans for K3 > > What are the current options for quiet fans for the K3? My original fans > are pretty quiet but at this time of the year when the windows are > closed and the ambient noise level is nil, the fan noise really starts > to bug me. It's the very slight rattle they make when they start winding > up.. (In the din of summertime, can't hear myself think, let alone fan > noise.) > > Sources? Prices? > > Are the newer Elecraft fans quiet? My PA is only a couple of years old > so the fans are pretty recent model. > > 73, > Drew > AF2Z > __ > 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 > Message delivered to k6ll.d...@gmail.com > __ > 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 > Message delivered to bren...@whateley.com > __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Hi Drew, look here please: http://ok1rp.blogspot.cz/2015/08/elecraft-k3-fans-noise-fp-high-temp.html Hope it helps, 73 - Petr, OK1RP - http://ok1rp.blogspot.com -- View this message in context: http://elecraft.365791.n2.nabble.com/Quiet-fans-for-K3-tp7613325p7613375.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Update: measured the fans and they're 60mm. Jim AB4AC Jim Finan Sent from my BlackBerry 10 smartphone. Original Message From: Jim Finan Sent: Saturday, January 30, 2016 6:19 PM To: drewko; elecraft@mailman.qth.net Subject: Re: [Elecraft] Quiet fans for K3 I use Noctua fans for most everything. Have used them for years and haven't had any failures. I use them for all systems I build for clients and myself. They have several varieties for each size and the ones with rubber mounts are generally the most quiet. Also have a choice of 3 and 4 pin plugs. While most of their fans come with rubber mounting hardware, the ones I suggest have rubber inserts surrounding the bolt/screw holes. Noctua is an Austrian company but fans are built in the orient. Top quality with 'SSO2' bearings. Both Amazon and Newegg have them and the prices generally run from about $15-18. Just make sure the specs (CFM) match (or are better). While I haven't measured them on mine, they look like 80mm. Jim AB4AC Jim Finan Sent from my BlackBerry 10 smartphone. Original Message From: drewko Sent: Saturday, January 30, 2016 5:35 PM To: elecraft@mailman.qth.net Reply To: drew...@verizon.net Subject: [Elecraft] Quiet fans for K3 What are the current options for quiet fans for the K3? My original fans are pretty quiet but at this time of the year when the windows are closed and the ambient noise level is nil, the fan noise really starts to bug me. It's the very slight rattle they make when they start winding up.. (In the din of summertime, can't hear myself think, let alone fan noise.) Sources? Prices? Are the newer Elecraft fans quiet? My PA is only a couple of years old so the fans are pretty recent model. 73, Drew AF2Z __ 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 Message delivered to jimfi...@att.net __ 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 Message delivered to jimfi...@att.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
This was discussed extensively in the past including alternate brands, model numbers and sources. It's somewhere in the archives and better than starting over from scratch. 73, Guy K2AV On Saturday, January 30, 2016, drewkowrote: > What are the current options for quiet fans for the K3? My original fans > are pretty quiet but at this time of the year when the windows are closed > and the ambient noise level is nil, the fan noise really starts to bug me. > It's the very slight rattle they make when they start winding up.. (In the > din of summertime, can't hear myself think, let alone fan noise.) > > Sources? Prices? > > Are the newer Elecraft fans quiet? My PA is only a couple of years old so > the fans are pretty recent model. > > 73, > Drew > AF2Z > __ > 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 > Message delivered to k2av@gmail.com > -- Sent via Gmail Mobile on my iPhone __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
New Fan : Noctua NF-A6x25 FLXAirflow : 17 cfm (29.2 m3h converted to cfm)Noise : 19.3dbSpeed : 3000 RPM (at 12 v)Static Pressure : 2.18 mmCutent : 120 mA (.12 A) Original Fan : UTEC AT6015L-12L2B-ND2Airflow : 15.4 cfmNoise : 24.8Speed : 3000 RPM (at 12v)Static Pressure : 2.21mmCurrent : 100 mA From: drewkoTo: elecraft@mailman.qth.net Sent: Saturday, January 30, 2016 5:34 PM Subject: [Elecraft] Quiet fans for K3 What are the current options for quiet fans for the K3? My original fans are pretty quiet but at this time of the year when the windows are closed and the ambient noise level is nil, the fan noise really starts to bug me. It's the very slight rattle they make when they start winding up.. (In the din of summertime, can't hear myself think, let alone fan noise.) Sources? Prices? Are the newer Elecraft fans quiet? My PA is only a couple of years old so the fans are pretty recent model. 73, Drew AF2Z __ 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 Message delivered to hlyin...@yahoo.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Here's a more specific link to the fans that I used: http://www.newegg.com/Product/Product.aspx?Item=N82E16835608032_mc=TEMC-RMA-Approvel_mmc=TEMC-RMA-Approvel-_-Content-_-text-_- Dave Hachadorian, K6LL Yuma, AZ -Original Message- From: drewko Sent: Saturday, January 30, 2016 3:34 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Quiet fans for K3 What are the current options for quiet fans for the K3? My original fans are pretty quiet but at this time of the year when the windows are closed and the ambient noise level is nil, the fan noise really starts to bug me. It's the very slight rattle they make when they start winding up.. (In the din of summertime, can't hear myself think, let alone fan noise.) Sources? Prices? Are the newer Elecraft fans quiet? My PA is only a couple of years old so the fans are pretty recent model. 73, Drew AF2Z __ 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 Message delivered to k6ll.d...@gmail.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
I was the one who pretty much started this whole thing way back when here are the specs New Fan : Noctua NF-A6x25 FLXAirflow : 17 cfm (29.2 m3h converted to cfm)Noise : 19.3dbSpeed : 3000 RPM (at 12 v)Static Pressure : 2.18 mmCutent : 120 mA (.12 A) Original Fan : UTEC AT6015L-12L2B-ND2Airflow : 15.4 cfmNoise : 24.8Speed : 3000 RPM (at 12v)Static Pressure : 2.21mmCurrent : 100 mA From: Guy Olinger K2AV <k2av@gmail.com> To: "drew...@verizon.net" <drew...@verizon.net> Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> Sent: Saturday, January 30, 2016 6:19 PM Subject: Re: [Elecraft] Quiet fans for K3 This was discussed extensively in the past including alternate brands, model numbers and sources. It's somewhere in the archives and better than starting over from scratch. 73, Guy K2AV On Saturday, January 30, 2016, drewko <drew...@verizon.net> wrote: > What are the current options for quiet fans for the K3? My original fans > are pretty quiet but at this time of the year when the windows are closed > and the ambient noise level is nil, the fan noise really starts to bug me. > It's the very slight rattle they make when they start winding up.. (In the > din of summertime, can't hear myself think, let alone fan noise.) > > Sources? Prices? > > Are the newer Elecraft fans quiet? My PA is only a couple of years old so > the fans are pretty recent model. > > 73, > Drew > AF2Z > __ > 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 > Message delivered to k2av@gmail.com > -- Sent via Gmail Mobile on my iPhone __ 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 Message delivered to hlyin...@yahoo.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Drew, I don't think I have ever heard mine on #679. I must admit my hearing is not perfect, however, I operate daily at 80w, I have no air conditioning, I operate inside my motor home in a confined area and still no sound. I am wondering if you have an issue with the fans. Has it always been like it is now?, have you pulled them to check them? I would suspect there may be a problem and either lubrication or a mechanical issue may be the culprit? Sewing machine oil may help. 73 Gary -Original Message- From: "drewko"Sent: 31/01/2016 8:35 AM To: "elecraft@mailman.qth.net" Subject: [Elecraft] Quiet fans for K3 What are the current options for quiet fans for the K3? My original fans are pretty quiet but at this time of the year when the windows are closed and the ambient noise level is nil, the fan noise really starts to bug me. It's the very slight rattle they make when they start winding up.. (In the din of summertime, can't hear myself think, let alone fan noise.) Sources? Prices? Are the newer Elecraft fans quiet? My PA is only a couple of years old so the fans are pretty recent model. 73, Drew AF2Z __ 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 Message delivered to vk1zzg...@gmail.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Search the archives for "Noctua." You will find numerous references to the Noctua NF-A6X25R, available at Newegg for $15. Use the mounting hardware that comes with the Noctua, and save all the old fan stuff so you can restore it all to original if You ever need to. I installed these about a year ago, and they are indeed quieter and blow more air. For a 100 watt RTTY contest, I set the fans at minimum speed = 2, and they never speed up from that level, despite the heavy duty cycle. The most irritating part about the stock fans was the whiney noise they would make while spooling up and down as they changed speed. If you're not a contester, you may never hear the fans, so it may not be an issue :) Dave Hachadorian, K6LL Yuma, AZ -Original Message- From: drewko Sent: Saturday, January 30, 2016 3:34 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Quiet fans for K3 What are the current options for quiet fans for the K3? My original fans are pretty quiet but at this time of the year when the windows are closed and the ambient noise level is nil, the fan noise really starts to bug me. It's the very slight rattle they make when they start winding up.. (In the din of summertime, can't hear myself think, let alone fan noise.) Sources? Prices? Are the newer Elecraft fans quiet? My PA is only a couple of years old so the fans are pretty recent model. 73, Drew AF2Z __ 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 Message delivered to k6ll.d...@gmail.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
Ditto with sn 21. Have never heard the fans. K9ZTV > On Jan 30, 2016, at 4:51 PM, Ken G Koppwrote: > > I have SN 0056 and like Gary have never heard the fans. I -have- > occasionally looked to make sure they're indeed running. They're so quiet > that if they weren't I probably wouldn't know it. (;-) > > 73 > > Ken - K0PP >> On Jan 30, 2016 3:44 PM, "Gary" wrote: >> >> Drew, >> >> I don't think I have ever heard mine on #679. >> I must admit my hearing is not perfect, however, I operate daily at 80w, I >> have no air conditioning, I operate inside my motor home in a confined area >> and still no sound. >> I am wondering if you have an issue with the fans. Has it always been like >> it is now?, have you pulled them to check them? >> I would suspect there may be a problem and either lubrication or a >> mechanical issue may be the culprit? >> Sewing machine oil may help. >> 73 >> Gary >> >> -Original Message- >> From: "drewko" >> Sent: 31/01/2016 8:35 AM >> To: "elecraft@mailman.qth.net" >> Subject: [Elecraft] Quiet fans for K3 >> >> What are the current options for quiet fans for the K3? My original fans >> are pretty quiet but at this time of the year when the windows are >> closed and the ambient noise level is nil, the fan noise really starts >> to bug me. It's the very slight rattle they make when they start winding >> up.. (In the din of summertime, can't hear myself think, let alone fan >> noise.) >> >> Sources? Prices? >> >> Are the newer Elecraft fans quiet? My PA is only a couple of years old >> so the fans are pretty recent model. >> >> 73, >> Drew >> AF2Z >> __ >> 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 >> Message delivered to vk1zzg...@gmail.com >> __ >> 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 >> Message delivered to keng __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
I have SN 0056 and like Gary have never heard the fans. I -have- occasionally looked to make sure they're indeed running. They're so quiet that if they weren't I probably wouldn't know it. (;-) 73 Ken - K0PP On Jan 30, 2016 3:44 PM, "Gary"wrote: > Drew, > > I don't think I have ever heard mine on #679. > I must admit my hearing is not perfect, however, I operate daily at 80w, I > have no air conditioning, I operate inside my motor home in a confined area > and still no sound. > I am wondering if you have an issue with the fans. Has it always been like > it is now?, have you pulled them to check them? > I would suspect there may be a problem and either lubrication or a > mechanical issue may be the culprit? > Sewing machine oil may help. > 73 > Gary > > -Original Message- > From: "drewko" > Sent: 31/01/2016 8:35 AM > To: "elecraft@mailman.qth.net" > Subject: [Elecraft] Quiet fans for K3 > > What are the current options for quiet fans for the K3? My original fans > are pretty quiet but at this time of the year when the windows are > closed and the ambient noise level is nil, the fan noise really starts > to bug me. It's the very slight rattle they make when they start winding > up.. (In the din of summertime, can't hear myself think, let alone fan > noise.) > > Sources? Prices? > > Are the newer Elecraft fans quiet? My PA is only a couple of years old > so the fans are pretty recent model. > > 73, > Drew > AF2Z > __ > 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 > Message delivered to vk1zzg...@gmail.com > __ > 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 > Message delivered to kengk...@gmail.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
I use Noctua fans for most everything. Have used them for years and haven't had any failures. I use them for all systems I build for clients and myself. They have several varieties for each size and the ones with rubber mounts are generally the most quiet. Also have a choice of 3 and 4 pin plugs. While most of their fans come with rubber mounting hardware, the ones I suggest have rubber inserts surrounding the bolt/screw holes. Noctua is an Austrian company but fans are built in the orient. Top quality with 'SSO2' bearings. Both Amazon and Newegg have them and the prices generally run from about $15-18. Just make sure the specs (CFM) match (or are better). While I haven't measured them on mine, they look like 80mm. Jim AB4AC Jim Finan Sent from my BlackBerry 10 smartphone. Original Message From: drewko Sent: Saturday, January 30, 2016 5:35 PM To: elecraft@mailman.qth.net Reply To: drew...@verizon.net Subject: [Elecraft] Quiet fans for K3 What are the current options for quiet fans for the K3? My original fans are pretty quiet but at this time of the year when the windows are closed and the ambient noise level is nil, the fan noise really starts to bug me. It's the very slight rattle they make when they start winding up.. (In the din of summertime, can't hear myself think, let alone fan noise.) Sources? Prices? Are the newer Elecraft fans quiet? My PA is only a couple of years old so the fans are pretty recent model. 73, Drew AF2Z __ 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 Message delivered to jimfi...@att.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Quiet fans for K3
I never hear the fan on my KXPA-100 - Ha! Of course it doesn't have one but works fine for up to 110w with my KX3 or K3/10. Made several 6m-SSB contacts with 80w for the ARRL VHF Contest this weekend. 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: dubus...@gmail.com __ 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 Message delivered to arch...@mail-archive.com