The Yaesu FT-991A is an advanced all-mode, all-band MF/HF/VHF/UHF transceiver that includes C4FM (System Fusion) Digital capability. It supports CW, AM, FM, SSB, and Digital Modes (Packet, PSK31, RTTY, and C4FM), delivering 100 Watts on HF/50 MHz and 50 Watts on VHF/UHF bands.
Featuring a full-color 3.5″ TFT touchscreen display, the Yaesu FT-991A offers real-time spectrum scope functionality with ASC (Automatic Spectrum-scope Control), making operation intuitive and highly visual. Whether you operate from home, mobile, or in the field, this compact and portable transceiver ensures exceptional performance and access to all modern ham radio modes.
Real-time Spectrum Scope with ASC
Graphically view signal activity in real time with a multi-color waterfall display. The Automatic Scope Control (ASC) enables quick identification of weak or hidden signals.
Multi-color Waterfall Display
Easily pick out signals visually without muting the audio. Signal strength and chronological signal activity are color-differentiated for easier navigation.
32-bit Digital Signal Processing (DSP)
Equipped with the Texas Instruments TMS320C6746 DSP (3000 MIPS / 2250 MFLOPS), the Yaesu FT-991A delivers outstanding interference rejection and real-world performance across HF, VHF, and UHF.
3kHz Roofing Filter
Enhances receiver performance by attenuating interfering signals and maintaining high-quality audio output.
3.5-Inch Full Color TFT Display
Enjoy superior operability and visibility with a large, intuitive touchscreen.
USB Connectivity
Connect the Yaesu FT-991A to your computer via USB for CAT control, firmware updates, and integrated SCU-17 Interface Unit support for USB Audio I/O and TX Control.
100 Watts Output Power
Delivering 100W (HF/50 MHz) and 50W (VHF/UHF) with a robust heat-sink and auto cooling system for extended operating times.
Compact & Portable
With dimensions of 8.8″(W) x 3″(H) x 9.9″(L) and weighing just 9.7 lbs, it’s ideal for mobile and portable setups.
Built-in Automatic Antenna Tuner
Fast LC-switching network with a 100-channel memory that reduces tuning time.
High-Accuracy TCXO
DDS/PLL local oscillator with ±0.5 PPM accuracy ensures signal stability.
RX Coverage: 30 kHz – 56 MHz, 118 MHz – 164 MHz, 420 MHz – 470 MHz (amateur bands only)
TX Coverage: 1.8 MHz – 54 MHz, 144 MHz – 148 MHz, 430 MHz – 450 MHz (amateur bands only)
Circuit Type:
Triple-Conversion Superheterodyne: SSB/CW/AM
Double-Conversion Superheterodyne: FM/C4FM
Modulation Modes: A1A (CW), A3E (AM), J3E (LSB/USB), F7W (C4FM), F3E (FM), F1D/F2D (Packet)
Power Output:
160–6m: 100W SSB/CW/FM, 25W AM
2m/70cm: 50W SSB/CW/FM, 12.5W AM
Dimensions (W × H × D): 9.0″ × 3.2″ × 9.3″ (excluding knobs/connectors)
Weight: 9.5 lbs
