RG500 w /without messenger trunk cable (P3 500JCA/JCAM-109) Speicfication Is According Commscope's Standard, Standard Shield/tri-shield, Quad Shield Cable. With messenger/without messenger 

Specifications: 

- Center Conductor: 2.77mm CCA-Copper Cald Aluminum 
- Dielectric: 11.43mm Foam PE 
- Outdoor Conductor: 12.70mm Solid Seamless Aluminum Tube 
- Jacket: 14.22mm PE Black   
- Messenger: With or without 2.77 Steel messenger 

Model list: RG500 (P3 500 JCA), RG500 w/messendger (P3 500 JCAM-109) 

Other Model list: QR540JCA/JCAM, RG540, RG540M, P3 412,P3 750