I used (and still use) 6.5, 5.5 and 4.5 MHz resonators for PICs. You have to set HS for some of them to work and they require large load caps (47-150 pF afair). 10.7 M should work also. Peter -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body