[RFI] Brushless vs Brush Fans & RFI?

[kd4e]

buyextras looks like a good company!  They just replied and
actually had the answer, the fans are brushless.

Gonna get five and hope they work out OK.

Will advise if they get RF noisy.

Tnx! doc

> No, I'd say it isn't.  I learned in the military that brushes in high speed
> fans can fail after only a few days.   That's why computer and equipment
> cooling fans don't use them.  And these guys have a two year warranty.
> 
> Some modern fans can generate EMI if the the motor driver or tach-output
> oscillate at RF.   Soetimes leads provide a UHF "tank circuit" that helps
> things along.
> 
> Cortland
> KA5S
> 
> 
>> [Original Message]
>> From: kd4e <kd4e at verizon.net>
>>
>> It is reasonable to presume that a 12v fan not labeled
>> "brushless" has brushes and is thus more likely to
>> generate RFI?
>>
>> http://www.buyextras.com/bev12albalbe.html


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