SPECIFICATIONS
General
Frequency Range:
Receive: 0.1-56 MHz, 76-108 MHz, 118-164 MHz, 420-470 MHz
Transmit : 160 - 6 Meters, 2 Meters,
70 Centimeters (Amateur bands only)
5167.5 kHz (Alaska Emergency Frequency/USA Version)
Emission Modes : A1 (CW), A3 (AM), A3J (LSB/USB), F3 (FM),
F1 (9600 bps packet), F2 (1200 bps packet)
Synthesizer Steps (Min.): 10 Hz (CW/SSB), 100 Hz (AM/FM/WFM)
Antenna Impedance: 50 Ohms, Unbalanced
Operating Temp. Range: +14
˚
F to +140
˚
F (
–
10
˚
C to +60
˚
C)
Frequency Stability:
±
4 ppm from 1 min. to 60 min after power on.
@25
˚
C: 1 ppm/hour
±
0.5 ppm/1 hour @25
˚
C, after warmup
(with optional TCXO-9)
Supply Voltage: Normal: 13.8 VDC
±
15 %, Negative Ground
Current Consumption: Squelched: 600 mA (Approx.)
Receive: 1 A
Transmit: 22 A
Case Size (W x H x D): 6.1" x 2.0" x 9.2" (155 x 52 x 233 mm)
Weight (Approx.): 4.6 lb. (2.1 kg)
Transmitter
RF Power Output (@13.8 V DC): SSB/CW/FM AM Carrier
160- 6 Meters: 100 W 25 W
2 Meters: 50 W 12.5 W
70 Centimeters: 20 W 5 W
Modulation Types: SSB: Balanced Modulator,
AM: Early Stage (Low Level),
FM: Variable Reactance
FM Maximum Deviation:
±
5 kHz (FM-N:
±
2.5 kHz)
Spurious Radiation:
–
50 dB (1.8-29.7 MHz)
–
60 dB (50/144/430 MHz)
Carrier Suppression: >40 dB
Opp. Sideband Suppression: >50 dB
SSB Frequency Response: 400 Hz-2600 Hz (
–
6 dB)
Microphone Impedance: 200-10k Ohms (Nominal: 600 Ohms)
Receiver
Circuit Type: Double-Conversion Superheterodyne
(SSB/CW/AM/FM)
Superheterodyne (WFM)
Intermediate Frequencies: 1st: 68.33 MHz (SSB/CW/AM/FM); 10.7 MHz (WFM)
2nd: 455 kHz
Sensitivity: SSB/CW AM FM
100 kHz-1.8 MHz
—
32
µ
V
—
1.8 MHz-28 MHz 0.2
µ
V 2
µ
V
—
28 MHz-30 MHz 0.2
µ
V 2
µ
V 0.5
µ
V
50 MHz-54 MHz 0.125
µ
V 1
µ
V 0.2
µ
V
144/430 MHz 0.125
µ
V
—
0.2
µ
V
(SSB/CW/AM = 10 dB S/N, FM = 12 dB SINAD)
Squelch Sensitivity: SSB/CW/AM FM
100 kHz-1.8 MHz
—
—
1.8 MHz-28 MHz 2.5
µ
V
—
28 MHz-30 MHz 2.5
µ
V 0.32
µ
V
50 MHz-54 MHz 1
µ
V 0.16
µ
V
144/430 MHz 0.5
µ
V 0.16
µ
V
Image Rejection: HF/50 MHz: 70 dB, 144/430 MHz: 60 dB
IF Rejection: 60 dB
Selectivity (
–
6/
–
60 dB): SSB/CW: 2.2 kHz/4.5 kHz AM: 6 kHz/20 kHz
FM: 15 kHz/30 kHz FM-N: 9 kHz/25 kHz
SSB (optional YF-122S installed): 2.3 kHz/4.7 kHz (-66 dB)
CW (option YF-122C installed): 500 Hz/2.0 kHz
AF Output: 2.5 W (@4 Ohms, 10% THD or less)
AF Output Impedance: 4-16 Ohms
Specifications are subject to change without notice, and are guaranteed within the amateur bands only.
The FT-857, the world’s smallest HF/VHF/UHF Mobile transceiver, provides base
station performance from an ultra-compact package that’s ideal for mobile or
external battery portable work. Wide frequency coverage, outstanding receiver
performance, and the convenience of remote-head operation* make the FT-857 the
expert’s choice for high-performance mobile operation!
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
H F / V H F / U H F
m u l t i m o d e
transceiver! Its rugged case
design is a masterpiece of
ergonomic design, with often-
used switches and knobs
conveniently positioned for
ULTRA COMPACT DESIGN
WIDE FREQUENCY COVERAGE
RUGGED, HIGH-OUTPUT TRANSMITTER DESIGN
Providing transmitter coverage of the HF, 50
MHz, 144 MHz, and 430 MHz Amateur bands,
the FT-857 also includes receive coverage on
100 kHz to 56 MHz, 76 to 108 MHz, 118-164 MHz,
and 420-470 MHz. Enjoy the excitement of
public safety monitoring, along with weather
broadcasts, AM and FM broadcasts, aviation
communications, as well as the action on the
Ham bands!
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
t o t h e
extensive
cooling
system, featuring a
thermostatically-controlled
ENHANCED TRANSCEIVER PERFORMANCE
THROUGH DIGITAL SIGNAL PROCESSING
(Optional DSP-2 Unit Required)
For superior interference rejection and
transmitter "talk power," the FT-857's DSP
circuitry enhances both sides of the
c o m m u n i c a t i o n s
circuit. The FT-857’s
DSP Unit features a
24-bit high-tech D/A chip for signal processing.
•
DSP BANDPASS FILTER :
Separate DSP
Bandpass
Filters for Voice and CW augment the analog
filters
for enhanced interference rejection. For Voice
modes, you get 16 High-Pass Filter cutoff
frequency selections, and 32 Low-Pass Filter
selections, for a total of 512 combinations. And for
CW, you may choose bandwidths of 240 Hz, 120
Hz, or a razor-sharp 60 Hz.
•
DSP AUTO-NOTCH FILTER
:
To reduce
interference caused by annoying carriers within
the audio passband, the DSP Auto-Notch
provides a significant reduction in the
interference level. If multiple carriers are
present, the DSP will detect and notch all the
carriers present.
•
DSP NOISE REDUCTION :
The very effective
Noise
Reduction filter of the FT-857 utilizes as many
as 16 noise-reduction algorithms, for use in a
wide variety of noise environments, without
introducing appreciable distortion on the
desired signal. Operator fatigue is reduced, and
signal-to-noise ratio is significantly enhanced.
•
DSP MICROPHONE EQUALIZER :
To match the FT-
857's TX audio response to the waveform
produced by your voice and the microphone in
use, the DSP system includes a four-position Mic
Equalizer circuit. The result is increased "talk
power" as extraneous frequencies are
suppressed, allowing all available power to be
concentrated into your voice's pattern.
Building on the acclaimed performance of the
FT-1000D, Mark-V
FT-1000MP
, and FT-897, Yaesu's
engineers have crafted the FT-857’s front end
for a very low noise floor, along with wide
dynamic range. Utilizing an up-conversion
architecture for HF with a first IF of 68.33 MHz,
the FT-857 features a double-conversion
superheterodyne system (single conversion on
WFM), with the 2nd IF at 455 kHz. Extensive
bandpass filtering in the front end, along with
careful device selection and gain distribution,
yield a receiver system ready for the strong-
signal challenges of
today's crowded bands!
On VHF and UHF the very-
low-noise
MOS FET
preamplifier is followed by
an active DBM mixer,
yielding the low noise
figure required for weak-
HIGH-PERFORMANCE RECEIVER DESIGN
•
IF Shift :
Use the IF SHIFT feature to vary the
center frequency of the IF passband, so as to
eliminate interference above or below the
current operating frequency.
•
IF Noise Blanker :
Optimized for use in the mobile
environment, the FT-857 includes a highly-
effective IF Noise Blanker specifically designed
for suppression of ignition and other pulse-type
noises. The Noise Blanker’s threshold is
adjustable via the Menu.
•
Intercept Point Optimization (IPO) :
For reception on
the lower HF bands, where low Noise Figure is
not required, the IPO feature causes the RF
preamplifier to be bypassed, allowing direct
signal input to the first mixer. An input
attenuator is also provided, for very noisy
conditions.
•
Adjustable AGC :
The Automatic Gain Control
(AGC) circuitry of the FT-857's receiver may be
adjusted, by the operator, for Slow or Fast
recovery times. A convenient "Auto" feature
programs "Fast" AGC for CW, and "Slow" for
voice modes. And the AGC may also be turned
off, if desired, allowing manual gain control from
the front panel.
•
Clarifier (R.I.T.) :
For split-frequency pile-ups or
to follow drifting signals, the Clarifier control
provides up to
±
9.99 kHz of adjustment of the
receiver’s frequency, without changing the
transmit frequency. For wider–split pileups, the
"Split" mode allows you to use VFO-A and VFO-
B separately, too.
•
RF Gain Control :
For noise reduction and/or
variation of the AGC system threshold, the
Menu allows the front panel’s "Squelch"
control to operate as an "RF Gain" control.
•
VOX :
For hands-free Voice operation, the VOX
CW OPERATING FLEXIBILITY
The FT-857 is without peer in its array of most-
asked-for features for the CW expert!
•
Built-In Electronic Keyer :
The FT-857's built-in
Electronic Keyer includes a weight control, as
well as Menu capability to reverse the "Dot"
and "Dash" contacts on your connector.
•
CW Message Memory with Beacon Mode :
For
repetitive "CQ TEST" and contest exchange
messages, the FT-857 includes a three-message
memory capability. The "Beacon" mode may be
used to send a repetitive message out
continuously for up to four hours, ideal for 6-
meter use during DX-peditions.
•
CW Pitch/Sidetone Control :
The CW Pitch control
allows the transmitted signal to be offset
400/500/ 600/700/800 Hz from "zero beat" with the
receive frequency. This adjustment
simultaneously varies the center frequency of the
RX passband (including the DSP BPF), as well as
the CW Sidetone pitch. The Sidetone therefore
serves as a "Spot" signal during tuning.
•
CW Trainer :
A popular feature of the FT-857 is
the CW Trainer, which will send five-character
letters and/or numbers via the speaker, so you
For operation on a wide variety of digital modes,
including 1200/9600 bps FM packet, RTTY, SSTV,
or PSK31, the rear-panel 6-pin mini-DIN
connector provides easy to Data I/O lines, plus
PTT and Ground. For PSK-31 and other AFSK
modes, the injection sideband (USB/LSB) is
selectable, along with BFO and Display Shift and
EASY DATA-MODE SETUP
The quiet, fast-acting local oscillator system of
the FT-857 borrows extensively from the FT-847
and FT-897, using a Direct Digital Synthesizer
(DDS) to achieve fast lock times and silky-
smooth tuning in steps as fine as 10 Hz. The
excellent carrier-to-noise ratio helps preserve
spurious-free dynamic range in a crowded
band, and the smooth tuning leaves you with
UNMATCHED EASE OF ACCESS TO FEATURES
•
Battery Voltage Meter
•
TX Meter Selection
Modulation Level, ALC, Power Output, or SWR.
•
Two Antenna Connectors
Separate jacks for
HF/50 MHz and 144/430 MHz, affixed to the
rear panel.
•
Large, Easy-to-See TX/RX Status LED
•
Optional
High-Stability Reference Oscillator
The
TCXO-9 provides
±
0.5 ppm stability at 77˚
F/25˚ C
for applications requiring very high frequency
accuracy.
•
Versatile Scanning Features
VFO
Scan, Memory Scan, Band-Limited Scanning
(PMS), Priority Scan and Dual Watch.
•
Auto
Power-Off (APO) and Time-Out Timer (TOT)
•
CAT System
Computer Programming capability
The FT-857 is a VHF/UHF operator's dream come
true!
•
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 your current
operating frequency.
•
ARTS™(Auto-Range Transponder System) :
During
Search-and-Rescue operations, the ARTS™
The 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 be programmed to show different colors on
each band, mode, Memory Group, or even to
track signal strength and power output by
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-pole YF-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.
AND MUCH, MUCH MORE. . .
ADVANCED CONVENIENCE FEATURES
FOR VHF/UHF OPERATION
HIGH-RESOLUTION DOT-MATRIX DISPLAY
The 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
let you restrict operation to a sub-band, if you
VERSATILE MEMORY SYSTEM!
UPGRADE WITH COLLINS
®
MECHANICAL FILTERS
FOR SSB AND CW (0ption)
*Optional YSK-857 Separation Kit required
HIGH-PERFORMANCE PLL DESIGN
A / B
(VFO A/B Selection)
MW
(Write to Memory)
STO
(Quick Memory Store)
RPT
(Repeater On/Off)
TON
(CTCSS/DCS On/Off)
ENC
(Split Tone Encode)
ARTS
(ARTS
™
On/Off)
SCN
(Scan Start)
SCOP
(Spectrum Scope)
MTR
(Meter Mode)
SPOT
(CW Spot)
TUNE
(ATU/ATAS On/Off)
NB
(Noise Blanker On/Off)
IPO
(RX Preamp On/Off)
CFIL
(RX Normal Fltr.)
PLY1
(Keyer Mem. 1)
DNR
(DSP Noise Fltr.)
MONI*
(SQL Disable)
A=B
(Equalize VFOs A/B)
SKIP
(Skip during Scan)
RCL
(Quick Memory Recall)
REV
(RPT Shift Reverse)
—
DEC
(Split Tone Decode)
SRCH
(Smart Search
™
On/Off)
PRI
(Priority Ch. Watch)
WID
(Scope Bandwidth)
PWR
(Meter Mode)
BK
(Break-in On/Off)
DOWN
(ATAS Down)
AGC
(AGC On/Off)
ATT
(RX Attenuator On/Off)
N/A
(Optional Fltr. 1)
PLY2
(Keyer Mem. 2)
DNF
(DSP Notch Fltr.)
QSPL*
(Quick Split)
SPL
(Split Operation)
TAG
(Memory Name Tag)
PROC
(Speech Processor On/Off)
VOX
(VOX On/Off)
TDCH
(Tone/Code Selection)
TDCH
(Tone/Code Search)
PMS
(Band-Limit Scan)
DW
(Dual Watch)
STEP
(Scope Steps)
DISP
(Display Size)
KYR
(CW Keyer On/Off)
UP
(ATAS Up)
AUTO
(AGC Mode)
NAR
(Narrow Dev.)
N/A
(Optional Fltr. 2)
PLY3
(Keyer Mem. 3)
DBF
(DSP BPF)
ATC*
(1750 Hz Tone)
Actual Size
ULTRA-COMPACT HF/VHF/UHF
100 W* ALL-MODE TRANSCEIVER
(HF/6 m 100 W, 2 m 50 W, 70 cm 20 W)
FT-857
TX POWER OUTPUT (SSB,CW,FM)
Despite its compact size, the FT-857 is without peer in
ease of access to the features and functions you need
the most!
•
BIG-RADIO TUNING DIAL AND OUTSTANDING
ERGONOMICS :
Ease of operation of the FT-857
is enhanced by the large diameter 1.7” (
Ø
43
mm) Main Tuning Dial (10 Hz 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
ADVANCED FEATURES FOR ACTIVE DXers
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
impedance 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.
ACTIVE-TUNING ANTENNA SYSTEM (ATAS-120 Option)
ACCESSORIES & OPTIONS
Deluxe,
Ultra-High-Quality
Desktop Microphone
MD-200
A8X
0.5 ppm High-Stability
Reference Oscillator
TCXO-9
About this brochure: we have made this brochure as comprehensive and factual as possible. We reserve the right, however, to make changes at any time in equipment, optional accessories,
specifications, model numbers, and availability. Some accessories shown herein may not be available in some countries. Some information may have been updated since the time of printing;
please check with your Authorized Yaesu Dealer for complete details.
BAND DATA Cable
CT-58
DTMF Microphone
MH-36
E8J
Remote Control
DTMF Microphone
MH-59
A8J
External AC
Power Supply (25A)
FP-1030A
Digital Signal
Processing Unit
DSP-2
Collins
®
SSB Filter
(2.3 kHz/4.7 kHz:
—6 dB/—66 dB)
YF-122S
Collins
®
CW Filter
(500 Hz/2 kHz:
—6 dB/—60 dB)
YF-122C
Collins
®
CW Filter
(300 Hz/1 kHz:
—6 dB/—60 dB)
YF-122CN
Separation Kit
YSK-857
External Automatic
Antenna Tuner
FC-30
Motor Drive
Auto-Tuning
Antenna System
ATAS-120
VHF/UHF Antenna Base/
Counterpoise Kit for
ATAS-120
ATBK-100
CAT Interface Cable
CT-62
Packet Cable
CT-39A
Lightweight
Stereo Headphone
YH-77STA
Rear Panel
Front Panel
New
Remote Control
DTMF Microphone
MH-59
A8J (Option)
DC Cable
144/430 MHz Antenna Jack
HF/50 MHz Antenna Jack
CAT/LINEAR Jack
DATA Jack
ACC Jack
KEY Jack
EXT SPKR Jack
AF Knob
SQL/RF Knob
HOME Key
MODE( )/MODE( ) Key
TX/BUSY Indicator
BAND(DWN)/
BAND(UP) Keys
V/M Key
LOCK Key
MAIN DIAL
Multi Function Keys
Liquid Crystal Display
FUNC Key
CLAR Key
SELECT Knob
Ext. Meter Jack
Headphone Jack
DSP Button
POWER Switch
For mobile operation where mounting space is
very limited, the optional YSK-857 Separation Kit
allows the front panel to be remotely mounted
on your dashboard, with the transceiver
stashed away in available space. Data is
transferred between units at a lightning-fast
rate of 31.25 k/bps, for seamless remote
OPTIONAL REMOTE MOUNTING KIT
Multi Function Keys
A key
B key
C key
MFa
MFb
MFc
MFd
MFe*
MFe
MFf
MFg
MFh
MFi
MFj
MFk
MFl
MFm
MFn
MFo
MFp
MFq
HF / 6 m
2 m
70 cm
5W ~ 100W
5W ~ 50W
2W ~ 20W
The optional MH-59
A8J
Remote Microphone
provides control of the major functions
of the FT-857 from the microphone’s
keypad. The MH-59
A8J
includes a rotary
control knob for adjusting the operating
frequency and the receiver volume level.
LOCK Switch
PTT
Switch
Keypad
UP/DWN keys
SEL/DIAL
key and
Indicator
SEL knob
Supplied Accessories: Hand Microphone MH-31
A8J
, Mobile Mounting Bracket MMB-82, DC Power Cord
HF/50 MHz 1 kW Linear Amplifier
VL-1000 + VP-1000
*This row of functions is user-programmable (defaults shown).
1(DSP) key
2(MHz) key
3(CLAR) key
4(HOME) key
5( MODE) key
6(MODE ) key
7(V/M) key
8(BAND DWN) key
9(BAND UP) key
key
0(CNTL) key
ENT(#) key
A key
B key
C key
F(D) key
ACC key
PWR(FAST) key
P1 key
P2 key
Large Character mode
(European Version: Type N)
2003.0220NS(U/E)
Printed in Japan
B9200411
VERTEX STANDARD CO., LTD.
For the latest Yaesu news,visit us on the Internet:
4-8-8 Nakameguro, Meguro-ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU EUROPE B.V.
P.O. Box 75525, 1118 ZN Schiphol, The Netherlands
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20 /F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong
http://www.vxstd.com
http://www.vxstdusa.com
Email: [email protected]
http://www.yaesu.co.uk
Email: [email protected]
Phone 714/827-7600; Fax 714/827-8100
http://www.vxstd.com.hk
