Yaesu FT-991A, Руководство по эксплуатации, Страница: 151 / 158

Page 149 FT- 991 Operating Manual
Specifications
Receiver
Circuit Type : SSB/CW/AM: Triple-conversion Super heterodyne
FM/C4FM: Double-conversion Super heterodyne
Intermediate Frequencies : 40.455 MHz
SSB/CW/AM: 69.450 MHz/9.000 MHz/24 kHz
FM/C4FM: 69.450 MHz/450 kHz
Sensitivity : SSB/CW
(
BW: 2.4 kHz, 10 dB S+N/N
)
0.158 µV (1.8 - 30 MHz) (AMP 2 “ON”)
0.125 µV (50 - 54 MHz) (AMP 2 “ON”)
0.11 µV (144 - 148 MHz)
0.11 µV (430 - 450 MHz)
AM
(
BW: 6 kHz, 10 dB S+N/N, 30 % modulation @400 Hz
)
5 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 specification for frequency ranges not listed.
Squelch Sensitivity (TYP.) : SSB/CW/AM 1.0 µV (1.8 - 30 MHz, 50 - 54 MHz) (AMP2 “ON”)
1.0 µV (144 - 148 MHz, 430 - 450 MHz)
FM 0.35 µV (28 - 30 MHz, 50 - 54 MHz) (AMP2 “ON”)
0.125 µV (144 - 148 MHz, 430 - 450 MHz)
There is no specification for frequency range not listed.
Selectivity : Mode –6 dB –60 dB
CW/RTTY/PKT 0.5 kHz or better 750 Hz or less
SSB 2.4 kHz or better 3.6 kHz or less
AM 6 kHz or better 15 kHz or less
FM 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% THD
Audio Output Impedance : 4 to 8 Ohms (4 Ohms: nominal)
Conducted Radiation : Less than 4 nW
Specifications are subject to change, in the interest of technical improvement, without notice or obligation, and are
guaranteed only within the amateur bands.
Symbol placed on the equipment
Direct current