[Elecraft] K3 Noisy fans?

[Iain MacDonnell - N6ML]

Only for testing during installation - you're supposed to change
CONFIG:KPA3 to "nor" after that, and the speed is automatically changed
as required.

Even on the full speed test setting, mine really doesn't make much
noise - certainly not what I'd describe as a "whine"...

     ~Iain


David Wilburn wrote:
> Wasn't there a menu setting that set what speed the fans would run at?   
> Remember something from the assembly instructions.  Is it possible these 
> folks have a different setting?
> 
> Dave Wilburn
> NM4M
> 
> Joe Planisky wrote:
>> I stand corrected.  There are apparently a lot of quiet K3s out there.
>>
>> I wonder if the quiet fans are from a different manufacturer?
>>
>> The fans in my K3 are made by UTEC:
>> Series 8162 P/N AT6015L-12L2B ND5
>> Series 8163 P/N AT6015L-12L2B ND2
>>
>> The replacement fans (from Elecraft) were identical.
>>
>> 73
>> -- 
>> Joe KB8AP
>>
>> On Dec 9, 2008, at 8:34 AM, Ron D'Eau Claire wrote:
>>
>>> There were a number of comments among the first customers that the 
>>> fans were
>>> so quiet they couldn't tell if they were running without turning the rig
>>> around and looking at them.
>>>
>>> That's how mine are too (S/N 10 - early pre-production K3) and I am very
>>> sensitive to fan noise. On the rare occasions my K3 is actually 
>>> assembled an
>>> on the operating desk, it's close to a wood paneled wall and I'm not 
>>> aware
>>> of them even though there's not a single other fan our source of 
>>> noise in
>>> the room.
>>>
>>> Indeed, I sometimes can't hear them running when I'm working on the 
>>> rig on
>>> the bench.
>>>
>>> After taking a number of complaints about the little "whizzer" fan in 
>>> the
>>> K2/100, I believe that was Wayne's intent ;-)
>>>
>>> It sure sounds like something is quite different now. I'd recommend also
>>> posting a note on k3support at elecraft.com about it.
>>>
>>> Ron AC7AC
>>>
>>>
>>> -----Original Message-----
>>> From: elecraft-bounces at mailman.qth.net
>>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Joe Planisky
>>> Sent: Tuesday, December 09, 2008 7:56 AM
>>> To: David Ferrington, M0XDF
>>> Cc: elecraft at mailman.qth.net
>>> Subject: Re: [Elecraft] K3 Noisy fans?
>>>
>>> I think you got lucky and have extra quiet fans :-)
>>>
>>> 73
>>> -- 
>>> Joe KB8AP
>>>
>>> On Dec 9, 2008, at 7:20 AM, David Ferrington, M0XDF wrote:
>>>
>>>> That's how my K3 is set up too, in a corner where walls can reflect
>>>> any noise.
>>>> I still think there is something else wrong.
>>>> 73 de M0XDF, K3 #174
>>>> -- 
>>>> They know enough who know how to learn. -Henry Adams (1838-1918)
>>>>
>>>> On 9 Dec 2008, at 14:55, Joe Planisky wrote:
>>>>
>>>>> I've also found that where I place the K3 on my desk makes a
>>>>> difference in how loud the fans sound.  My desk is in a corner of
>>>>> the room and if I place the K3 so the back is pointing into the
>>>>> corner, the walls reflect any sound right back toward me and the
>>>>> fans are louder.  If I place it on a table in the middle of the
>>>>> room, I don't notice the noise nearly as much.
>>>>
>>>
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>>
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