You can download a pretty good spl meter for the iphone through the App Store. It is free and works well. Search for sound meter at the App Store.
I downloaded it at a rock concert with a friend's kids -- went immediately to the drug store and bought ear plugs. 73 de W6BK On May 29, 2010, at 3:31 AM, Tom W8JI wrote: >> It seems pretty clear that the early fans were indeed >> silent, certainly the >> same cannot be said of the UTEC ones in my #980. Gary >> kindly even sent me >> some more but the difference was negligible. I have spent >> a lot of time on >> this, even mounting the fan panel on rubber bushes - all >> to no avail. > > That isn't surprising. Fan mounts, although people really > like to mess with them, almost never have a noticeable > effect on noise. > > Other than the design of the fan itself, the number one > thing that affects noise is having an object near the blades > (especially out near the tips). Restricting the airflow also > doesn't help. The worse thing to do for a given amount of > restriction is place it on the fan inlet. > > I haven't played with a K3, but cutting some thick spacers > to move the fans outward from the PA might be worth a try. > Cheap sound meters are readily available, and a good way to > test. > > 73 Tom > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
