These models are High quality models in the RG-6 Series. Trishield and Quadshield cables are used in systems which require high shielding from inductive sources and GSM-LTE signals. LTE signals are in the same frequency band as Satellite IF signals and thus IF Multiswitch distribution is highly prone to LTE signals disturbance. Astel has introduced Trishield and Quadshield cables to provide Class A+ Shielding (-120 dB RFI) shielding. Our cables comply with Class A Shielding Standards. LSZH models comply with Low Smoke Zero Halogen and ROHS Standards European Directive 2011/65/EU. LSZH jackets emits very low smoke and very low hazardous constituents in the event of fire.