The TS-990S Kenwood is the new flagship in a successful era of transceivers which was heralded in 1973 by the TS-900 and continued on popular devices such as TS-930, TS-940 and TS-950. However, for the first time on this transceiver to represent the band scope, NF-scope, S-meter and many other settings and operating conditions of a dual TFT display is used!
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The Main Receiver of the TS-990S operates with a first IF of 8.24 MHz. The resulting dynamic range is even with strong signals in addition to its own payload significantly greater than a higher first IF. A newly developed mixer with generously dimensioned components ensures an IP3 value of +40 dB or more. 5 narrowband High-IP-Roofing-Filters were used for the main receiver. Besides the bandwiths of 270 and 500 Hz for CW, there are other, at 2.7 kHz for SSB and 6 and 15 kHz for AM and FM. Also as standard is a high-stability TCXO with ± 1ppm.
The Sub Receiver is an evolution of the receiver of the TS-590. The receiver operates on the bands from 160m – 20m also with the down-conversion principle. This makes the second receiver to a full-fledged single receier. For the second receiver Kenwood has donated his own DSP in the TS-990S. Total provided in this device as 3 single DSP their service. The Bandscope and each receiver have a separate DSP.
The Transmitter provides with the built-in power supply an output power of 200W on all bands. To keep the IMD signal clear in the TS-990S Mosfet transistors were used with 50V. Independent fans with temperature-controlled speed and a heat sink with ribbed ensure ventilation of the switching power supply, the antenna tuner and amplifier.
Worldwide, the TS-990S installed the first time a dual TFT display. On the 7 “wide main screen you see next to a waterfall display the most important information, such as frequency, mode, and the status of various functions. This half-sized subdisplay is above the main VFO knob also shows the set frequency. Addition allows to be this display also represent the received NF spectrum.
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In addition to the extensive memory functions, new split modes and various connectors for external accessories and remote control were equally implemented. With the free software available from Kenwood ARCP-990 can be from your PC very easily manage the memory and most of the functions of the transceiver directly operate. On the back are additional NF in- and outputs. Among them is an optical digital interface port, and a USB port. 2 additional USB ports are located on the front panel.
Some specs below:
5 roofing filters – 270 Hz, 500 Hz, 2.7 kHz, 6 kHz & 15 kHz,
Internet operation,
Down-conversion architecture on the main band*
CW Keyer with Iambic Modes A/B,
Triple “Analog Devices” DSP processors,
Twin USB ports, LAN & Serial Com ports,
Twin TFT displays, with touch-screen tuning,
Built-in Antenna Tuner,
RX & TX DSP Equalizer,
Low-level Drive output on 135 kHz band,
120 Memories, with Name Function,
Direct-access Band keys,
Sky Command II,
Built-in AC power supply.
200 watts output from 50V FET Push-pull PA stage |
+40dBm Intercept Point RX |
Main RX – Down Conversion on all bands 270Hz/500Hz/2.7kHz/6kHz/15kHz Roofing Filters |
Sub RX – Down Conversion on 15/20/40/80/160M bands (as TS-590S RX) 500Hz/2.7kHz Roofing Filters |
2 x TFT Colour Display screens |
3 x DSP Processors |
Built-in RTTY/FSK/PSK/QPSK Decoder/Encoder. |
4 x SO-239 Antenna sockets plus RCA jacks for RX-only antenna input and external RX out. “Antenna Name” display function for the 4 SO-239 ports |
Connectivity:- 10MHz Ref Clock I/O (BNC), External ATU port, Keyboard In, COM Port (Female 9-pin), Straight Key, Paddle/external Keyer, 2 x USB-A & 1 x USB-B ports, “ACC-2” Data/audio connector, “Remote” linear connector, analogue Meter Jack 3.5 mm, “DRV” low-level LF drive, Optical SP-DIF I/O, 2 x external speaker sockets, DVI-I Dual-link video port, LAN port |
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