[Drake] Cooling fans - blow in or out?

[MNACE]

blowing out
73,
Mark
N5KAE
----- Original Message ----- 
From: "Chris Codella, W2PA" <w2pa at arrl.net>
To: "Drake list" <drake at mailman.qth.net>
Sent: Saturday, February 12, 2005 12:40 PM
Subject: [Drake] Cooling fans - blow in or out?


> I'm about to install a cooling fan on my T-4XB and TR-4, having seen
> many ways to do it.  But what's the concensus on the list about blow-in
> vs. blow-out?  I've seen it recommended both ways.
>
> The only recommendation I saw that also included a rationale was one
> posting where someone said to orient the fan blowing out because the
> only time one wants to blow in is if there is a forced-air handling
> design built in, as exists in many amplifiers (i.e. chimneys, etc.).  I
> must say that most rigs I see with factory mounted fans on the back that
> also don't have air handling features inside, do in fact blow out, not in.
>
> What's the concensus among the Drake crowd here?  Please don't recommend
> one way or the other without giving a reason.
>
> Thanks!
> 73, Chris, W2PA
>
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