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Last modified 2015-11-28

Yaesu FT-991

A picture of Yaesu FT-991

SPECIFICATIONS

GENERAL
Type:Amateur HF/VHF/UHF transceiver (System fusion concept)
Frequency range:TX: 10-160 m + WARC / 6 m / 2 m / 70 cm
RX: 0.03-56 / 118-164 / 420-470 MHz
Tuning steps:5 / 10 / 100 Hz, 1 KHz
Mode:AM/FM/NFM/SSB/CW/RTTY/PSK/DV (C4FM)
Channels/memory management:99 regular
9 PMS (Band edge pairs)
5 QMB (Quick Memory Banks)
Repeater shift/offset: 10 m: 10 KHz to 1 MHz (10 KHz steps)
6 m: 10 KHz to 4 MHz (10 KHz steps)
2 m: 10 KHz to 4 MHz (10 KHz steps)
70 cm: 10 KHz to 10 MHz (10 KHz steps)
Power supply:13.8 VDC 15%
Current drain/power consumption:RX: 1.8-2.2 A
TX: Max 23 A
Antenna impedance/connector:50 ohms (Tuner on, HF: 16.7-150 ohms, 6 m: 25-100 ohms) / 2*SO-239
(1*SO-239 + 1*N-jack for Europe)
Dimensions (W*H*D):229*80*253 mm (9*3.2*10")
Weight:4.3 Kg (9.5 lbs)
Other features:3.5" color touchscreen. High speed spectrum scope, 0.5 ppm TXCO,
32-bit IF-DSP, Built-in automatic antenna tuner, USB connector,
CTCSS/PL and DCS, CAT & GPS connector




RECEIVER SECTION
Receiver system: Double conversion superheterodyne (FM/NFM/C4FM)
1st IF: 69.450 MHz
2nd IF: 450 KHz
Triple conversion superheterodyne (AM/SSB/CW)
1st IF: 69.450 MHz
2nd IF: 9 MHz
3rd IF: 24 KHz
Sensitivity: AM (6 KHz - 10 dB S+N/N)
0.5-1.8 MHz: 5 uV (Amp 2 on)
1.8-30 MHz: 1.6 uV (Amp 2 on)
50-54 MHz: 1.25 uV (Amp 2 on)
FM (15 KHz - 12 dB SINAD)
28-30 MHz: 0.35 uV (Amp 2 on)
50-54 MHz: 0.35 uV (Amp 2 on)
144-148 MHz: 0.18 uV
430-440 MHz: 0.18 uV
SSB/CW (2.4 KHz - 10 dB S+N/N)
1.8-30 MHz: 0.158 uV (Amp 2 on)
50-54 MHz: 0.125 uV (Amp 2 on)
144-148 MHz: 0.11 uV
430-450 MHz: 0.11 uV
Selectivity: AM
6 KHz (-6 dB), 15 KHz (-60 dB)
FM
12 KHz (-6 dB), 30 KHz (-60 dB)
SSB
2.4 KHz (-6 dB), 3.6 KHz (-60 dB)
CW/RTTY/PKT
500 Hz (-6 dB), 750 Hz (-60 dB)
Image rejection:HF/6 m: 70 dB
2 m/70 cm: 60 dB
AF output power/speaker:2.5 W at 10% distortion / 4 ohms
External speaker connector:3.5 mm, 4-8 ohms




TRANSMITTER SECTION
RF output power:HF + 6 m: 5-100 W (2-25 W AM)
VHF/UHF: 2-50 W (1-12 W AM)
Modulation system:AM: Low-level, early stage
FM: Variable reactance
SSB: Balanced
DV/C4FM: 4-level FSK
Max FM deviation:FM: 5 KHz
NFM: 2.5 KHz
Spurious emissions:HF: Less than -50 dB
6 m: Less than -63 dB
2 m/70 cm: Less than -60 dB
Microphone impedance/connector:200 ohms to 10 KOhms (600 ohms nominal) / 8-pin modular




MISCELLANEOUS
Manufactured:Japan, 2014-2016 (Discontinued)
Additional info:New price 2015 in Sweden: 14995:- SEK
Related documents: User manual (29.5 MB)
Group monitor manual (6 MB)
CAT manual (666 KB)
Modifications:
Options/Accessories:
ATAS-25
ATAS-120A
ATBK-100
CT-39A
CT-58
FC-40
FH-2
FP-1023A
FP-1030A
MD-100A8X
MD-200A8X
MH-31A8J
MH-36E8J
MMB-90
VL-1000/VP-1000
YH-77STA
Active tuning antenna, manual
Active tuning antenna, automatic
Antenna base kit
Packet interface cable
VL-1000 linear amplifier connection cable
External automatic antenna tuner
Remote control keypad
Power supply, 13.8 VDC, 23 A (USA only)
Power supply, 13.8 VDC, 25 A
Desk microphone
Ultra-high fidelity desk microphone
Standard hand microphone
Hand microphone with DTMF pad
Mobile bracket
Linear amplifier/Power supply
Lightweight stereo headphones
A rear picture of Yaesu FT-991