12-08-2016, 01:31 PM
As Terry said 0.1uF works perfectly well as a replacement for 0.09uF - but you can actually buy 0.09uF caps if it's more aesthetically pleasing to you. 
http://www.justradios.com/cart.html actually sells 0.09uF value caps - and other odd values.

http://www.justradios.com/cart.html actually sells 0.09uF value caps - and other odd values.