I had an external magnetic antenna from an old portable Sirius unit. I used that and put the antenna on the hood, bypassing the one on the soundbar. Antenna kits are not that expensive.
09 BLACK Sahara 4 Door - Auto, G2 4.88s
TF 2.5" Coil Lift w/shocks, TF Frnt Adj Trac, TF FLCA, JKS Discos, JKS Rear Adj Trac, LOD Full Rear GEN2,
A.C.E. Rock Rails, Viper TB: Check the Garage for more.