There is a fan accessory from Ten Tec for the Orion that
is mounted on a metal bracket. It fits very nicely onto
the KPA100 heatsink and is pretty quiet. You can even put
a resistor in the line and drop the voltage from 12V to
5-7 V to cut down the RPM and make it almost dead quiet
while still providing additional cooling at the heatsink.
Lets go even better for those who like to
experiment....You can put together a simple but effective
water cooling system such as what is used for computer
CPUs. Cut away the fins on the heatsink above where the
finals are and mount a waterblock to the heatsink above
the finals. This will draw the heat to the liquid that
goes to a small radiator for cooling. A small pump keeps
the system circulating. This should keep the small fan
from having to come on at all.
While this is a spur of the moment idea.....it seems like
it should work....and well enough that you should be able
to run digital modes without reduced power.
Has anyone tried something like this?
GL
Greg
AB7R
On Tue, 23 Jan 2007 12:01:04 -0500
"Darwin, Keith" <[EMAIL PROTECTED]> wrote:
I don't think this is true. Before the KPA100, my K2
had no fan. Front
panel & control board ran with no cooling support and
drift was never an
issue.
I run the KPA100 with an external fan which keeps the
hovercraft wizzer
on the back of the rig from coming to life. Again, the
front panel and
control board operate with no cooling.
- Keith N1AS -
- K2 5411.ssb.100 -
-----Original Message-----
From: Darrell Bellerive
From what I understand, one of the reasons for the fan is
to keep the K2
RF, front panel, and control board components at a
fairly constant
temperature to reduce drift, etc.
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