[Elecraft] [K2] K2/100 - where does all the hot air go?

[Don Wilhelm]

Stephen,

The air exits just behind the front plate - through the fins of the heat 
sink.  There is lots of exit area, no need to worry.

As far as just how fast the fan comes on, that depends on the 
temperature (of the heat sink at the PA transistor locations).  CAL TPA 
must be set in the menu should be set correctly, and set the FAN 
parameter of the PA ON menu item to NORMAL (tap DISPLAY to toggle the 
fan settings).

Turning the power down will reduce the heating and delay the fan turn-on 
time <G>.

73,
Don W3FPR

Stephen Prior wrote:
> I have the 100W amp mounted in an EC2 enclosure, all working great now, no
> small thanks to Don!
>
> I have a question.  The little fan on the back seems to push air into the
> unit, yet there is no obvious exit for it.  Or am I missing something?
> Almost seems like I need an automatic vent popping up at the front (that
> little panel could lift) like the vent on the back of a Porsche!  Perhaps
> replacing that little panel with a perforated one would help?
>
> I'm a little surprised at how quickly the fan comes on (on cw, I haven't
> used ssb yet), and also quite taken aback by its noise!
>
> 73 Stephen G4SJP
>
>
>