FUTABA:FUTL7681 R304SB-E 2.4G FHSS TELEM. RX by FUTABA $89.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This is the Futaba R304SBE 2.4GHz T-FHSS S.BUS2 4-channel telemetry receiver.