[Elecraft] Clever K3s cooling scheme?

[Ron D'Eau Claire]

Right, Roy. It's a whole different cooling system. The K2 has an EXTERNAL
heat sink. The fan assists by cooling the components inside the KPA100 amp,
pushing air in across the components and out through holes around the
forward edge of the heat sink. The heat sink fins are on top of the K2 in
open air.

As you note, the fans exhaust warm air from the heat sink inside the K3 out
through the back.  

73, Ron AC7AC

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Roy
Koeppe
Sent: Wednesday, May 24, 2017 5:36 AM
To: Elecraft at mailman.qth.net
Subject: [Elecraft] Clever K3s cooling scheme?

Re all the fans postings, it appears my K3s uses convection cooling during
light usage periods, drawing air in at the rear, backwards thru the idle
fans, and out the top. When fans engage, air flow is reversed...drawn in
thru the top and out the back. "Simplicity is ingenuity."

73,   Roy   K6XK 


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