URC transmission line

.subckt UTM in out gnd1
U1 in out gnd1 URCMOD L =20m
.model URCMOD URC CPERL=100p RPERL=100k FMAX=10G
.ends

XUTM 1 2 0 UTM

VS 1  0 dc 0 PULSE (0 5 15.9NS 0.2NS 0.2NS 15.8NS 32NS )
.control
TRAN 0.2N 47N 0 0.1N
plot v(1) v(2)
.endc

.end