[R-390] R390 cooling fan

Roy Morgan roy.morgan at nist.gov
Tue Jul 19 13:17:13 EDT 2005


At 11:46 AM 7/19/2005, Flowertime01 at wmconnect.com wrote:
>Roy,
>
>Another nice page.
>You sure try to help us guys along.

Roger,

Thanks.. glad to know that folks find it helpful.. (It's not very fancy!)

>From: "Dan Merz" <djmerz at 3-cities.com> ...
>Brad,  I used a 92 mm size fan with 35 cfm at the rated voltage. 
>...  Mouser Orion fan because it worked for me,  ...I think Roy used the 
>80 mm size with flow probably around 30 cfm -

The fan I used was a rescue item from some old computer power supply, most 
likely.  It is about 4 or 4-1/4 inches square.

>  I don't know whether he
>ran it at less than the rated voltage.

No, I just hooked a lamp cord to it and plugged it in. When I make 
improvements to the system, I'll power it from the radio and most likely 
reduce the voltage, or even use a smaller fan inside the radio mounted on a 
clamp-on bracket for a no-holes addition.

Roy




- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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