Yaesu FT-991A offers two new features – real-time spectral range and multicolor waterfall display!
– From 1.8MHz to 440MHz, not only the traditional SSB / CW / AM / FM, the C4FM mode for higher voice quality is also available over the full frequency range, but its size is incredible at 229X80X253mm.

– The new dynamic real-time spectrum window allows the operator to clearly understand the situation in all frequency bands and helps them to visually perceive the position of the signal in the band while listening to the voice and quickly switch to the target signal.

– The new color waterfall chart feature can be used to clearly identify the signal strength, chronological arrangement of different colors allows the operator to easily identify those who may be missed on the spectrum of weak signals.
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– SSB / CW / AM mode, the first IF are 69.450MHz, and with the IF 3kHz narrowband filter, making the machine has excellent reception performance. For different channels, also designed for different frequency band dedicated RF amplifier.
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– The same high-speed floating-point arithmetic DSP as the FTDX family, using a Texas Instruments TMS320C6746 with an impressive 3000MIPS performance. Has the ability to distinguish the input signal promiscuous.
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– The FT-991A has 100W in the shortwave band and 50W in the UV segment. Also built-in short-wave band high-speed automatic tuning. 100 memory channels to memorize the optimal tuning scheme and antenna tuning in an instant.
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– Cover HF-UHF band
– Real-time spectrum with automatic range control (ASC)
– 3.5-inch touch screen brings a convenient operating experience
– Can be connected to the computer via the USB cable
– Built-in 3kHz trim filter can effectively reduce the interference signal
– +/- 0.5PPM High Resolution DDS / PLL Local Oscillator

The new dynamic real-time spectrum window gives the operator a clear picture of what is happening on the entire spectrum and helps them to see the signal’s position on the spectrum while listening to the voice, quickly switching to the target signal.
The full-color waterfall show clearly analyzes the signal strength, and the chronological order of different colors allows the operator to easily find those faint signals that may be missed on the spectrum.

The FT-991A includes all the features of the FT-991, including: First IF settings 3 kHz and 15 kHz Provides powerful and optional trim filters for effective band-pass signaling. Three frequency conversion circuit structure provides a flexible high-gain distribution at each stage. These design structures ensure that the interference signal is optimized at each stage to optimize the gain distribution at each stage.

The receiver uses Texas Instruments’ high-speed DSP chip TMS320C6746 (3000 MIPS / 2250 MFLOPS) to ensure efficient operation in real-world environments, enabling excellent carrier immunity performance not only in HF but also in the VHF and UHF bands.

Built-in 3.5-inch TFT high-resolution color touch screen can display a lot of information, providing superior operability and visibility.

Features:
Dynamic real-time spectrum
Full-color waterfall flow show
160 meters to 70 centimeters – SSB / CW / FM / C4FM Digital / AM
100 W reliable performance (2 m / 70 cm: 50 W)
The 3.5-inch TFT full color touch screen panel provides superior operability and visibility
Perfect C4FM digital mode-based high-quality audio transmission, AMS, group monitoring and other advanced features
Three frequency conversion circuit structure (SSB / CW / AM) / double conversion circuit structure (FM / C4FM), an intermediate frequency is set at 69.450 MHz
Trim filters are standard on 3 kHz and 15 kHz
IF bandwidth and IF shift provide a strong transmission interference suppression
Circuitry, Digital Noise Reduction, IF Choke and Active Filter (Audio Peak Filtering, CW Only)
Built-in 160 – 6 m high-speed automatic antenna tuner
High-precision TCXO ± 0.5 ppm
Built-in electronic key controller
Beacon mode CW information storage
CW value / side tone control
Automatically relay different frequency
USB interface (CAT control, audio interface, PTT / SHIFT control)
Dual antenna interface (HF / 50MHz, 144 / 430MHz)
Optional FC-40 Automatic Tuning Option (for Long Guide Antennas)
Optional ATAS-120A Active Tuning Antenna Options
* Does not support high-speed data communication mode, it can not use the C4FM-based image transmission / reception

Frequency Range: Receive: 30kHz – 56 MHz
118MHz – 164 MHz
420MHz – 470 MHz (guaranteed performance, amateur mode only)
Sent: 1.8MHz – 54 MHz
137MHz – 164MHz
420 MHz – 470 MHz (amateur mode only)
Modulation: A1A (CW), A3E (AM), J3E (LSB, USB)
F7W (C4FM), F3E (FM)
F1D (PACKET), F2D (PACKET)
Standard configuration:
Handheld microphone, DC power cord, spare fuse, operator’s manual, warranty card