You can refer the existin Tline cable model and appropriately tweak those models to match the desired specification. These models are available in library named - "tline" and it is included in your PSpice installation. You can also use PSpice parts >Search function to find various other cable models.
Here in case of a lossy line, LEN is the electrical length. R, L, G, and C are the per unit length values of resistance, inductance, conductance, and capacitance, respectively.
You can refer the existin Tline cable model and appropriately tweak those models to match the desired specification. These models are available in library named - "tline" and it is included in your PSpice installation. You can also use PSpice parts >Search function to find various other cable models.
Here is model for your reference.
* Z0(Ohms) vp(%) F1(MHz) Loss1(dB/100Ft) F2(MHz) Loss2(dB/100Ft)
* RG8/U 52 66 100 2.2 1000 9
.model RG8/U TRN (r={29.7952u*sqrt(2*s)} l=262.808n
+ g={0.0690831p*abs(s)} c=97.1923p)
Another model is
* Subckt version uses fixed frequency, frq, to model simple lossy line
*
Here A1 is Near end hi, A2 is Near end lo, B1 is Far end hi, B2 Far end lo
.subckt RG8/U A1 A2 B1 B2 params: frq=100Meg len=1
.param PI2 {3.141592654*2}
.model RG8/U TRN (r={29.7952u*sqrt(PI2*frq)} l=262.808n
+ g={0.0690831p*PI2*frq} c=97.1923p)
t A1 A2 B1 B2 rg8/u len={len}
.ends
*$
Here in case of a lossy line, LEN is the electrical length. R, L, G, and C are the per unit length values of resistance, inductance, conductance, and capacitance, respectively.
Example: T4 1 2 3 4 LEN=1 R=.311 L=.378u G=6.27u C=67.3p
specifies a lossy line one meter long and R/L/G/C in per unit length.
You can find additional details about T Line model parameter in PSpice Reference Guide - Lossy Line section.
Here is indicate list of cable model available with PSpice. This panel is accesible from Place>PSpice Component > Search menu.