57SpecificationsFT-891 Operating ManualReceiverCircuit Type: SSB/CW/AM: Triple-conversion SuperheterodyneFM: Double Conversion SuperheterodyneIntermediate Frequencies: SSB/CW/AM: 1st: 69.450 MHz2nd: 450 kHz3rd: 24 kHzFM: 1st: 69.450 MHz2nd: 450 kHzSensitivity: SSB/CW (S/N 10 dB)0.16 μV (1.8 MHz - 30 MHz)0.16 μV (50 MHz - 54 MHz)AM (S/N 10 dB)5 μV (0.5 MHz - 1.8 MHz)1.6 μV (1.8 MHz - 30 MHz)1.6 μV (50 MHz - 54 MHz)FM (12 dB SINAD)0.35 μV (29 MHz, 50 MHz - 54 MHz)Selectivity Mode -6 dB -60 dBSSB/CW 2.4 kHz or better 3.6 kHz or lessCW-N 500 Hz or better 750 Hz or lessAM 6 kHz or better 15 kHz or lessFM 12 kHz or better 30 kHz or less (-50dB)FM-N 9 kHz or better 25 kHz or less (-50dB)Maximum AF Output: 2.5 W into 4 ohms with 10% THDAudio Output Impedance: 4 Ohms to 16 Ohms (8 Ohms: nominal)Conducted Radiation: Less than 4 nWSpecifications are subject to change, in the interest of technical improvement, withoutnotice or obligation, and are guaranteed only within the amateur bands.Symbol placed on the equipmentDirect current