Futaba 3PV 3-Channel 2.4GHz S-FHSS Radio System with R203GF Receiver Published by admin on November 15, 2023 3PV Transmitter – 3(+1)-Channel Digital Proportional RC System For Use with Surface Models. TRANSMITTER FREQUENCY: 2.4 GHz band. T-FHSS/S-FHSS SYSTEM, WHEEL TYPE, 3+1 CHANNELS – The 4th channel is uséd for mixing functions only.