Solution * Spice netlister for gnetlist * Spice backend written by Bas Gieltjes V1 1 0 dc 1 sin(0 10 100 0 0 0) R1 1 2 100k R2 2 0 RMODEL 100k .model RMODEL R tc1=-0.003 tc2=.02 .END And, interactive, sens v(2) print all shows v(2) changes -0.75mv per degree C. tomdean