DC Blocks / DC Injectors / EMP Protectors Protect your equipment •The robust Egant DC Block/DC Injectors prevents voltage and current from harming your radio equipment. The DC Block circuit uses a capacitor which prevents DC current flow while permitting RF power to flow through the DC Block. •Installing Egant EMP Protectors safeguards your investment and virtually eliminates system down time in case of lightning. For more information — DC Blocks / DC Injectors / EMP Protectors