FT-991 User Manual

| Noviembre 12, 2014

FT-991 User Manual

Yaesu HF/VHF/UHF All Mode Transceiver

FT-991 Yaesu

Operating frequency range :

  • HF band (0.03 – 56 MHz),
  • VHF band (118 – 164 MHz)
  • UHF band (420 – 470 MHz)

Highest internal operating Freq. : 539.449995 MHz

Nominal power source voltages : DC 13.8 V

Power Output:

HF/50 MHz: 5 – 100 watts (2.5 – 25 watts AM carrier)

144/430 MHz: 5 – 50 watts (2.5 – 12.5 watts AM carrier)

yaesu FT-991

Specifications

General
Rx Frequency Range: 30 kHz – 55.999995 MHz
118 MHz – 163.999995 MHz
420 MHz – 469.999995 MHz
Tx Frequency Ranges: 1.8 MHz – 430 MHz (Amateur bands only)
Frequency Stability: ±0.5 ppm (after 1 minute @+14 °F to +140 °F [-10 °C to +60 °C])
Operating Temperature Range: +14 °F to +122 °F (-10 °C to +50 °C)
Emission Modes: A1A, A3E, J3E, F3E, F7W, F1B, F1D, F2D, G1B
Frequency Steps: 5/10 Hz (SSB, CW), 50/100 Hz (AM, FM)
Antenna Impedance: 50 Ohms, unbalanced
16.7 – 150 Ohms, unbalanced (1.8 MHz – 29.7 MHz)
25 – 100 Ohms, unbalanced (50 MHz – 54 MHz)
(Tuner ON, 1.8 MHz – 50 MHz Amateur bands, TX only)
Power Consumption (Approx.): Rx (no signal) 1.8 A
Rx (signal present) 2.2 A
Tx (HF/50 MHz, 100 W) 22 A, (144/430 MHz, 50 W) 15 A
Supply Voltage: DC 13.8 V ± 15 % (Negative Ground)
Dimensions (WxHxD): 9.01″ x 3.15″ x 9.96″ (229 x 80 x 253 mm)
Weight (Approx.): 9.46 lbs (4.3 kg)
Transmitter
Power Output: HF/50 MHz: 5 – 100 watts (2.5 – 25 watts AM carrier)
144/430 MHz: 5 – 50 watts (2.5 – 12.5 watts AM carrier)
Modulation Types: J3E: Balanced,
A3E: Low-Level (Early Stage),
F3E: Variable Reactance
F7W: 4FSK (C4FM)
Maximum FM Deviation: ±5.0 kHz/±2.5 kHz
Harmonic Radiation: Better than -50 dB (below 30 MHz)
Better than -60 dB (above 30 MHz)
SSB Carrier Suppression: At least 50 dB below peak output
Undesired Sideband Suppression: At least 50 dB below peak output
Bandwidth: 3 kHz (LSB/USB), 500 Hz (CW), 6 kHz (AM), 16 kHz (FM)
Audio Response (SSB): Not more than -6 dB from 300 to 2700 Hz
Microphone Impedance: 600 Ohms (200 to 10 kOhms)
Receiver
Circuit Type: SSB/CW/AM: Triple-conversion Superheterodyne
FM: Double-conversion Superheterodyne
Intermediate Frequencies: 69.450 MHz
9.000 MHz (SSB, CW, AM)
24 kHz (SSB, CW, AM)
450 kHz (FM)
Sensitivity: SSB/CW (10 dB S+N/N)
0.158 uV (1.8 – 30 MHz) (RF AMP 2 “ON”)
0.125 uV (50 – 54 MHz) (RF AMP 2 “ON”)
0.125 uV (144 – 146 MHz) (RF AMP 2 “ON”)
0.125 uV (430 – 440 MHz) (RF AMP 2 “ON”)
AM (10 dB S+N/N, 30 % modulation @400 Hz)
28 uV (0.1 – 1.8 MHz) (RF AMP 2 “ON”)
2 uV (1.8 – 30 MHz) (RF AMP 2 “ON”)
1 uV (50 – 54 MHz) (RF AMP 2 “ON”)
FM (12 dB SINAD)
0.5 uV (1.8 – 30 MHz) (RF AMP 2 “ON”)
0.25 uV (50 – 54 MHz) (RF AMP 2 “ON”)
0.18 uV (144 – 146 MHz) (RF AMP 2 “ON”)
0.18 uV (430 – 440 MHz) (RF AMP 2 “ON”)
There is no specification for frequency ranges not listed.
Selectivity (WIDTH: Center): Mode -6 dB -60 dB
SSB/CW (Width=2.4 kHz) 2.4 kHz or better 3.6 kHz or less
CW-N (Width =500 Hz) 0.5 kHz or better 750 Hz or less
AM 6 kHz or better 15 kHz or less
FM 12 kHz or better 30 kHz or less
FM-N 9 kHz or better 25 kHz or less
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 16 Ohms (8 Ohms: nominal)
Conducted Radiation: Less than 4000 uuW

FT-991 yaesu FT-991 yaesu

Download Yaesu FT-991 User Manual

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