[Elecraft] noisy fans??

[Missouri Guy]

I've also experienced the noisy fans.  The original fans
were replaced by Elecraft, twice, but they were all the same Utec brand
and still have the same "whiney, rough bearing" type of noise.  
(Yes, they were all installed properly.)

I also have fan noise from an amplifier I occasionally use.  So,
my ultimate solution was to purchase a good pair of noise cancelling
headphones.  Noise problems "solved".

73,
Charlie, N0TT
-------------------------------------------------------------------------
---
> I just finished assembling my new K3, and all is working 
> well....except 
> that the PA fans are very noisy. /snip/

> 73, Bob K5SM
> 
> Hi Bob,
> 
> This is a subject that comes up on the reflector from time to time 
> and  
> elicits a whole range of responses; from "my fans are totally 
> silent",  
> to "my fans are really loud".  /snip/

If you're interested in  
> 
> the details, you can search the archives for my email with the 
> subject  
> "K3 fan noise, part XXLIV" on May 27, 2010.  Later, I was able to  
> compare rigs with both brands of fans side-by-side and confirmed 
> that  
> the Elina fans were quieter.  (Search the archives for my email with 
>  
> the subject "[K3] fan noise: new info" on July 2, 2010.)
> 
> But none of that is any immediate help to you.
> 
> Make sure the fans and their mounting plate sit flush and aren't  
> warped. I.e. check that you didn't inadvertently install a washer  
> where there shouldn't be one, and that the countersunk heads of the  
> 
> long screws that hold the fans on are seated properly.  If 
> everything  
> looks good there and you've carefully checked and confirmed that the 
>  
> fan blades aren't touching anything as they turn (which you say you  
> 
> have), it sounds like you might have one or two defective fans.   In 
>  
> that case, a call to Elecraft or an email to k3support at elecraft.com  
> 
> seems in order.
> 
> I consider the fans in my K3 to be moderately noisy, but they don't  
> 
> make what I would call a "clicking" or "buzzing" sound.  The noise I 
>  
> hear is a combination of a siren-like whine and a sound I can only  
> 
> describe as "rough bearings".
> 
> 73
> --
> Joe KB8AP