Yaesu FT-991AAll Mode HF/50/144/430 MHz 100W Transceiver
The new generation FT-991A all-band transceiver offers maximum compatibility for all modes, including HF/50/144/430 MHz, in a single compact unit. Extremely advanced receiver circuitry combined with intuitive operation. A further leap forward for all All Mode transceivers.
FEATURES:
- Equipped with waterfall function in real time
The uncompromising design of the receiver circuits guarantees excellence.
Basic performance from HF to VHF / UHF
Sophisticated receiver "front-end", comparable to that of FT-DX series transceivers
Triple conversion with 69.450 MHz IF frequency for all bands;
The 1st IF stage features a 3 kHz narrow-band roofing filter as standard;
Designed to provide extraordinary characteristics with closely spaced multi-signals, not only in HF, but also in VHF and UHF bands
Features the highly acclaimed quad mixer from the FT-DX series transceivers, together with a dedicated VHF/UHF mixer
The 1st IF stage mixer for HF/ 50 MHz is a quad mixer with four 3SK294 dual-gate MOS-FET devices offering very low noise, excellent intermodulation characteristics, and a high dynamic range. A dedicated mixer for the VHF/UHF bands, separate from the HF bands, allows for optimized design for the frequencies concerned, resulting in superior performance.
The RF amplifier design is optimized for each band
Selectable IPO/ AMP1/ AMP2 parameters (HF/50 MHz) for optimized operation with any received signal.
Separate RF amplifiers offer optimal characteristics for each band
TECHNOLOGY:
Yaesu's IF DSP system is renowned for its outstanding interference rejection
Same high-speed floating-point DSP as used on the FTDX Series
The Texas Instruments TMS320C6746 (3000 MIPS / 2250 MFLOPS) high-speed floating-point DSP chip provides excellent interference rejection with actual signals under real conditions, not only in HF, but also in VHF and UHF bands.
Extremely effective interference rejection
IF WIDTH and IF SHIFT functions, which are fundamental for interference elimination, are naturally integrated to optimize the effect. The effectiveness of interference rejection is further enhanced by sophisticated functions inherited from the FT-DX series, such as 16-stage digital noise reduction and the DNF (AUTO NOTCH) filter that quickly tracks even multiple beats. The CONTOUR function that easily highlights the desired signal with a natural sound; the NOTCH function with selectable bandwidth and other features ensure comfortable use in Contest and DX QSOs.
Final stage with ample power reserves: 100 W for HF /50 MHz band and 50 W for VHF /UHF band
- High quality push-pull amplifier with 100 watts for HF /5O MHz
Thanks to a push-pull arrangement of RD1OOHHF1 MOS-FET devices, renowned for excellent performance in the HF/ 50 MHz range, the amplifier delivers high-quality power at 100 watts, with low distortion.
High-speed 1.8 to 54 MHz antenna tuner supplied as standard
- The 50 W amplifier for the VHF /UHF band ensures sufficient power for high-frequency bands
The final amplifier for the VHF and UHF bands uses the high-power RD70HUF2 MOS-FET device, which includes two MOS-FETs in a single package, for an overall output power of 50 watts.
- Compatibility for advanced C4FM digital functions
V/D mode for simultaneous voice and data transmissions with effective error correction, ideal for mobile applications and Voice FR* (Full Rate) mode for high-quality audio transmissions
- The AMS function instantly recognizes digital mode or FM mode and enables mutual communications
- The GM (Group Monitor) function allows easy on-screen checking for the presence of group members within the transmission range
- 126 types of DSQ (Digital Squelch) enable precise selection of communication stations
* FR data mode (high-speed data communication mode) is not supported and therefore it is not possible to send/receive images in C4FM digital mode.
Advanced spectrum analyzer function with waterfall display capability
A high-resolution spectrum analyzer, usually not available in this category of transceivers, allows instant evaluation of band conditions and precise selection of any desired station.
The ASC function automatically switches between spectrum analyzer sweeping and receive audio in conjunction with tuning
The brand new touch panel, combined with the traditional layout, guarantees maximum ease of use
3.5-inch color touch panel for convenient operation
The color TFT display provides readily useful information on function status
and settings
The extremely responsive panel with functional design and intuitive layout makes its use a real pleasure
