[Amps] Alternative cooling strategies for SB-220?

[Joe Subich, W4TV]

> Harbaugh cooling fan, 

Please, I've seen this too many times.  It is Harbach Electronics 
(formerly Harbach Engineering).  

73, 

   ... Joe, W4TV 
 


> -----Original Message-----
> From: amps-bounces at contesting.com 
> [mailto:amps-bounces at contesting.com] On Behalf Of Bill W5WVO
> Sent: Tuesday, December 15, 2009 6:18 PM
> To: amps at contesting.com
> Subject: [Amps] Alternative cooling strategies for SB-220?
> 
> 
> I have a 6-meter-converted SB-220 equipped with the upgraded 
> Harbaugh cooling fan, which provides more air circulation 
> volume than the original Heathkit fan. It does a great job, 
> but sounds like a B-17 revving up for takeoff. My XYL can't 
> stand being in the same room with it. What solutions have any 
> of y'all come up with to quiet this or similar amps' cooling 
> fans? Like for example, are blowers generally more quiet than 
> muffin fans? Any other ideas?
> 
> Bill W5WVO
>