Originally Posted by
Isobaron
So I'm considering buying a spectrum analyzer. For my price range there are two options, one is DSS Microvib and the other is Chadwick 192.
Curious why you think you need a spectrum analyzer for your current fleet to include the radials? Regardless, if your intent is to troubleshoot a rogue vibration in the field, you can use your 177 with a simply modification provided you know the different RPM values of the component you are checking. You would need this same info if using an analyzer as well. But if your primary requirement is simply to monitor the health of your fleet then you may want to look into some sort of basic HUMS system instead.