[Elecraft] K3 Noisy fans?

[Trond Stubberud]

On serial number 1993,  one of the fans kicks in pretty early and there is
no doubt what's going on. With headphones this is not a problem, but without
I have problems when listening to weak cw-signals. Compared to my earlier
Omni 7, which was without fans this is a step down regarding noise.
Maybe some of us have got fans which is not within Elecrafts specs ?

73,

Trond LA8NHA

K1 # 1995
K2 # 6594

-----Opprinnelig melding-----
Fra: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] På vegne av W7TMT
Sendt: 09 December, 2008 7:24 AM
Til: Elecraft at mailman.qth.net
Emne: RE: [Elecraft] K3 Noisy fans?


I ran my K3 hard enough over the weekend to think about monitoring the PA
temp. As I was CQing on Saturday when condx were el-stinko from where I am
and responses were few and far between I watched the temp slowly rise until
it got to 50C and then stabilize. Curious to see what the fans sounded like
I took off the phones and couldn't hear the fans at all. I put my hand over
the vents on top and could feel the air flow so I knew they were running but
it wasn't until I put my head down close to the rig that I could hear them.
Mine are very quite even when running at nearly full flow. 

Just my observations of course with S/N 1889.

73,

Patrick, W7TMT

> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Missouri Guy
> Sent: Monday, December 08, 2008 9:31 PM
> To: Elecraft at mailman.qth.net
> Subject: [Elecraft] K3 Noisy fans?
> 
> I was trying to ferret out some weak signals on 160m when the 
> cooling fans switched on, making it very hard to hear over 
> the "whine" of the fans (or fan) even through the padding on 
> my headphones.  
> 
> Has anyone tried to quiet them down with vibration isolators, etc?
> 
> Charlie, N0TT

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