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Yaesu FT-990 is a model line of amateur radio transceiver manufactured by the Yaesu Corporation in Japan from It is a descendant of and shares many features with the Yaesu FT-1000. An expedition in 2009 by radio amateurs to the Glorioso Islands, in the Indian Ocean near Madagascar, made use of two FT-990's despite each radio being more than ten years old. Description FT-990's have knobs and buttons, versus menu driven interfaces of some newer transceivers. The Yaesu FT-990 is a solid state transceiver with the following features: General * General coverage receiver, tunes continuously from 100 kHz to 30 MHz * Modes: AM, USB, LSB, CW, FM, FSK * Controlled internally by six microprocessors * Modular construction using removable epoxy boards * Built-in switching AC power supply (115 V @ 8A or 230 V @ 4A) * 90 memories, each one remembers frequency, mode and bandwidth * Iambic CW keyer * Multi-function illuminated analog S-meter * Computer Aided Transceiver (CAT) allows computer control via a serial cable with a DIN jack * Notch filter, IF shift, noise blanker, and a digitally switched capacity audio filter * Independent receiver incremental tuning ("RIT") and transmitter incremental tuning ("XIT") * Two independent VFOs to support split operation Transmitter * Supported amateur bands (meters): 160, 80, 40, 30, 20, 17, 15, 12, and 10 * 100 Watts, adjustable from 10W to 100W; up to 25W in AM mode * RF Speech Processor * Automatic antenna tuner Receiver Triple-conversion superheterodyne with IF frequencies of 47.21 MHz, 10.94 MHz and 455 kHz Sensitivity * SSB and CW: < 0.25 μV (1.8 - 30 MHz) * AM: < 1 μV (1.8 - 30 MHz) Selectivity (-6 dB down) * No button selected: 6.0 kHz * 2.4 kHz button: 2.2 kHz (all modes except FM) * 2.0 kHz button: 1.8 kHz (all modes except AM and FM) * 500 Hz button: 500 Hz (CW, RTTY, Packet) * 250 Hz button: 240 Hz (CW, RTTY) Note: the 250 Hz CW bandwidth and the 2.0 kHz SSB bandwidth require installation of optional 8-pole crystal filters. Pricing When new in 1991, the FT-990 had an MSRP list price of $2399. Model Variations ROM Versions. Earlier models have non-volatile ROM memory installed with software version 1.2, while later models have version 1.3. The software cannot be upgraded by the user and requires a new ROM chip. The chips have been discontinued by Yaesu and are not available. *TRX Manager (http://trx-manager.com/) and DxLab (http://www.dxlabsuite.com/) supports the Rom Version 1.2. DC Version. FT-990's were made in an "AC version" (with power supply) and a "DC version" (no power supply).
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