Measuring just 6.1 "x 2" x 9.2" (155 x 52 x 233 mm), the FT-857 is the world's smallest full-power HF/VHF/UHF multimode transceiver!Its rugged case design is a masterpiece of ergonomic design, with often- used switches and knobs conveniently positioned for easy access.
RUGGED HIGH OUTPUT
Borrowing extensively from the FT-897 transmitter design, the FT-857's rugged power amplifier section utilizes Bipolar Transistor devices, providing low noise, low distortion, and high reliability.On HF and 6 meters, you get 100 Watts of clean power output, while on 2 meters you get 50 Watts out, and 20 Watts on 70 cm. Reliability is assured thanks to the extensive cooling system, featuring a thermostatically-controlled fan and aluminum diecast chassis.
EASE OF ACCESS TO FEATURES - BIG-RADIO TUNING DIAL AND OUTSTANDING ERGONOMICS
Despite its compact size, the FT- 857 is without peer in ease of access to the features and functions you need the most! Ease of operation of the FT-857 is enhanced by the large diameter 1.7" (043 mm) Main Tuning Dial(10Hz steps minimum), similar in size to the tuning knob of many base station rigs.What's more, the SELECT knob allows "channelized" tuning in minimum steps of 1 kHz on SSB/CW, or 5 kHz on FM, for quick and easy tuning around the band. All important keys are strategically placed around the front panel, for quick access.
EASY-TO-USE "SCROLLING FRONT PANEL KEYS: The compactness of the FT-857 is made possible by the easy-to-use "multi function" keys, which allow adjustment of a number of transceiver operating functions during operation.Pressing the [FUNC] key allows selection of the operating function row, using the Selector knob, and you may then press the [A], [B], or [C] key, as needed, to change the setting. One row of keys may also be custom-programmed by the operator, allowing you quick access to a particularly important set of functions or Menu items.
Versatile Tone Control Selections:Both CTCSS and DCS Encoder/Decoders are built in! For easy access to repeaters, a 50-tone CTCSS system works along with a 104-code Digital Code Squelch (DCS) in the FT-857. For applications requiring split CTCSS/DCS access, a convenient "Split Tone" feature is also provided, along with the ability to encode (only) CTCSS or DCS, if desired.
Automatic Repeater Shift: On the 144 MHz and 430 MHz bands, the FT-857 will automatically activate the repeater shift appropriate for the part of the band in which you are operating.
Smart Search™: When visiting a new city, use the Smart Search system to scan the FM/AM Mode for activity. When busy channels are found, they will be automatically loaded into a special Smart Search™ memory bank, for easy recall.
Spectrum Scope:If you have to be away from your radio for a few minutes, turn on the Spectrum Scope to keep watch on band activity. The Spectrum Scope will create a bar-graph display of activity on channels above and below frequency.
ARTS™(Auto-Range Transponder System) :During Search-and-Rescue operations, the ARTSTM feature will notify you if a field station (for example, a low-power hand-held unit) has gone out of communications range, so you can instruct them to move to a better location.
ACTIVE TUNING ATAS-120 (option)Yaesu's patented ATAS-120 Active-Tuning Antenna System provides a compact, yet efficient, automatically-adjusting antenna for mobile, portable, or apartment balcony use!Utilizing DC voltages fed from the FT-857, the ATAS-120 automatically adjusts its length longer or shorter, with the FT-857 feeding a tiny amount of power for SWR detection by its internal directional coupler.When the best mpedance match is found, tuning automatically stops, and operation can begin. Specified for operation on the 7/14/21/28 MHz Amateur bands, the ATAS-120 contracts fully for use on the 50/144/430 MHz bands, providing a low SWR for local FM work (where vertical polarization is predominant). And if you're an apartment dweller, use the optional ATBK-100 Antenna Base Kit, which provides an outstanding counterpoise to ensure low-angle radiation on the VHF/UHF bands. See your Yaesu Dealer for details regarding suitable mounts for the ATAS-120.
COLLINS FILTER (option)To enhance performance on both receive and transmit, high-performance Collins® Mechanical Filter options are available for both SSB and CW.For SSB, the 2.3 kHz, 10-poleYF-122S option provides a very flat passband response, for natural-sounding transmit audio, along with excellent skirt selectivity. And for CW, the 500 Hz, 7 pole YF-122C and 300 Hz, 7-pole YF- 122CN options help separate signals on a crowded band in a contest.
VERSATILE MEMORYThe FT-857 provides up to 200 "Main" memory channels, each of which may be named with an Alpha-Numeric label of up to eight characters.These 200 Memories may be separated into as many as 10 Memory Groups of 20 Memories each.For added convenience, you also get a "Quick Memory" and a "Home Channel" on each band, plus Five pairs of band-limit memories, to letyou restrict operation to a sub-band, if you like.
HIGH RESOLUTION DISPLAYThe large 2.1"x0.69"(53.4x17.2 mm) multi-color display provides easy-to-read indication of many operating functions. The color may be chosen from among 32 different color selections, and may beprogrammed to show different colors on each band, mode. Memory Group, or even to track signal strength and power output by color!