Pat, Is this the Pat Fitzpatrick ex SED? If so, happy 30th Anniversary Pat. We graduated 30 yrs ago. What have you been up to? Dan - - -( ~ ~ ~ ~ ~ ~)- - - Dan Bobyn, P.Eng Dan Bobyn Engineering Ltd RF and Microwave Circuits Consulting Ph/Fax 403.295.2708 Mobile 403.819.8464 www.dbrf.com