[UK-CONTEST] Alpha fans

[Stewart GM4AFF]

I use a 120 x 38mm one from Maplin Order Code: WY08J. Probably doubles the
noise, but increases the airflow adequately too.

Stewart
GM4AFF

-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com] On Behalf Of G3RAU at aol.com
Sent: 12 November 2011 23:16
To: uk-contest at contesting.com
Cc: ejm1878 at yahoo.com
Subject: [UK-CONTEST] Alpha fans

On the back of  some Alpha linears it's possible to bolt on  an auxiliary
axial fan  to keep everything running nice and cool during contests.  
First question is, is this a 38 or 25mm thick fan? 
 I presume when the auxiliary fan has been fitted the  airflow out of the
chimneys  increases to an extent that is detectable by hand ( and ear?) -
but roughly  how much increase is there?
Second question is, have you used a UK sourced fan that does the job,
rather than the factory supplied one,  and is it  quiet?
Interested in peoples experiences before buying  something.  
TIA
Derek G3RAU
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