Futaba Receivers have Clear Narrow Band Signal Reception for Optimum Performance. There are available replacement receivers for all models from the R122JE 2 Channel AM Receiver through to the R5014DPS 14 Channel receiver. Narrow-band spacing and dual conversion signal filtering combine to provide exceptionally clear, interference-free reception and amazingly smooth, accurate control. Frequency ranges are 29MHz for Surface Models & 36 MHZ for Aircraft Models. The range of Receivers include Crystal Type & also the new Synthesized Systems with the new R203FHS for 3PK series 29MHz being released soon & the R319DPS for the 9C Series 36MHz now available.