Yes, if you tell the K3 that the FM filter is 6 KHz and not 13 KHz. 73, ... Joe, W4TV On 5/26/2010 1:51 PM, Ruben Navarro Huedo wrote: > Hello friends: > At this moment i don't own AM or FM filter. > If i install FM filter.... can i use it for AM? > > Thank's a lot. >