ANSI/SCTE 68-2008 Drop Passives: Matching Transformers 75Ω to 300Ω

An American National Standard. The Society of Cable Telecommunications Engineers (SCTE). 2008. 5 р. The purpose of this document is to specify recommended mechanical and electrical standards for broadband radio frequency (RF) devices whose primary purpose is to provide impedance and connector match between 75Ω coaxial type F and 300Ω twin-lead open screw connectorized devices. The most common use for such devices is matching coaxial input cables from distribution systems to 300Ω balanced screw antenna terminals on indoor receivers.