[ICOM] IC-575H questions

[Max Harelik]

I know you didn't ask this, but I'd suggest that you look for something 
physically very close to the output side of the turning fan blades. The 
compression of the air between such adjacent objects and the turning 
blades as they pass the object creates the buzzing at working rpm. A 
little creative rearranging of parts alleviates the problem. I've run 
across this condition from 2" muffin fans up to 4' roll-around gym fans.

73,
Max, K5OVW

flearl at msn.com wrote:

>Hello Icom List:
>                    I have a line on an Icom 575H that has had a noisy fan that makes a high pitched buzzing/whining noise. The noise is not loud nor does it sound like it is laboring  while running. The fan works, blows air, seems like it does what it is supposed to do, except this buzz noise. The fellow sent it back to Icom under warranty but the fan still buzzes 15 years later. This sounds like a costly and difficult replacement/repair, can anyone advise?  Cosmetically it looks very nice, otherwise said to work ok, what is it worth?  
>73
>Warren Flearl NØWF
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