Vintage 2008 Futaba 2.4GHz FASST R604FS-E 4-Channel Diversity Receiver for Electric (EP) Cars. This listing is for an extremely rare & long discontinued Vintage 2008 Futaba 2.4GHz FASST R604FS-E 4-Channel Diversity Receiver for Electric (EP) Cars. This receiver is NOT compatible with 2.4GHz FHSS, S-FHSS or T-FHSS systems (unless you have backwards compatible such as the 4PX & 7PX radios). This compact 2.4GHz 4-Channel FASST Diversity receiver seems to be used only for a limited amount of time. It is extremely clean and in mint condition! What you see in these photos is what you will receive. Nothing more and certainly nothing less of it. Last picture shows receiver binded (solid green LED) to a Futaba 4PX radio system with an external battery supply which is NOT INCLUDED with this listing. The Futaba R604FS-E 2.4GHz FASST 4-Channel Diversity Receiver is compatible with the Futaba 4PK/4PKS/4PKSR and 4PX/4PXR/7PK Surface Radio Systems operating in C2 mode. Incredibly small and lightweight this receiver features Futaba Advanced Spread Spectrum Technology (FASST) which allows the receiver to process information at eight times the resolution of standard systems for unsurpassed control and smooth servo travel. This receiver features normal and high-speed modes for analog and digital servo compatibility. It just doesn’t seem right without these vintage high end electronics! Shop here and SAVE BIG! Or Price Varies for Worldwide International. 0% for in-state buyers / 0% for out-of-state buyers.