Yaesu FT-991A Technical Supplement

Also see for FT-991A: Information for Customers Operating Manual Information for Customers Operating Setup Instruction manual

Contents

FT-991 Technical SupplementSpecificationsSPECIFICATIONS-2ReceiverCircuit Type: SSB/CW/AM: Triple-conversion SuperheterodyneFM/C4FM: Double-conversion SuperheterodyneIntermediate Frequencies: 40.455 MHzSSB/CW/AM: 69.450 MHz/9.000 MHz/24 kHzFM/C4FM: 69.450 MHz/450 kHzSensitivity: SSB/CW (BW: 2.4 kHz, 100.158 μV (1.80.125 μV (500.11 μV (144 - 148 MHz)0.11 μV (430 - 450 MHz)AM (BW: 6 kHz, 105 μV (0.5 - 1.8 MHz) (AMP 2 “ON”)1.6 μV (1.8 - 30 MHz) (AMP 2 “ON”)1.25 μV (50 - 54 MHz) (AMP 2 “ON”)FM (BW: 15 kHz, 12 dB SINAD)0.35 μV (28 - 30 MHz) (AMP 2 “ON”)0.35 μV (50 - 54 MHz) (AMP 2 “ON”)0.18 μV (144 - 148 MHz)0.18 μV (430 - 440 MHz)There is no specificationSquelch Sensitivity (TYP.): SSB/CW/AM1.0 μV (1.8 - 30 MHz, 50 - 54 MHz) (AMP 2 “ON”)1.0 μV (144 - 148 MHz, 430 - 450 MHz)FM0.35 μV (280.125 μV (144 - 148 MHz, 430 - 450 MHz)There is no specification for frequency ranges not listed.Selectivity: Mode –6 dB –60 dBCW/RTTY/PKT 0.5 kHz or better 750 Hz or lessSSB 2.4 kHz or better 3.6 kHz or lessAM 6 kHz or better 15 kHz or lessFM 12 kHz or better 30 kHz or less (–50 dB)Image Rejection: 70 dB or better (1.8 MHz - 50 MHz Amateur bands)60 dB or better (144/430 MHz Amateur band)Maximum Audio Output: 2.5 W into 4 Ohms with 10% THDAudio Output Impedance: 4 to 8 Ohms (4 Ohms: nominal)Conducted Radiation: Less than 4 nWSpecifications are subject to change, in the interest of technical improvement, without notice or obligation,and are guaranteed only within the amateur bands.