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FT-857D HF/VHF/UHF All Mode Transceiver
FT-857D HF/VHF/UHF All Mode Transceiver
The FT-857D is an HF/VHF/UHF mobile transceiver and provides base station-type 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 optional remote-head operation make the FT-857 the expert's choice for high-performance mobile operation!
Ultra Compact Design
Measuring only 155 x 52 x 233 mm, the FT-857D is the world’s smallest full-power HF/VHF/UHF multimode transceiver! Its rugged case design is a masterpiece of ergonomic design, with commonly used controls conveniently positioned for easy access.
High-Performance Receiver Design
Building on the acclaimed performance of the FT-1000D, Mark-V FT-1000MP, and FT-897, Yaesu’s engineers have crafted the FT-857D’s front end for a very low noise floor, along with wide dynamic range. Using an up-conversion architecture for HF with a first IF of 68.33 MHz, the FT-857D features a double-conversion superheterodyne system (triple conversion on FM), with the 2nd IF at 10.7 MHz. 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!
Wide Frequency Coverage
Providing transmitter coverage of the HF, 50 MHz, 144 MHz, and 430 MHz Amateur bands, the FT-857D 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!
Versatile Memory System
The FT-857D 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 ten pairs of band-limit memories, to let you restrict operation to a sub-band, if you like.
Digital Signal Processing (option)
For superior interference rejection and transmitter “talk power,” the FT-857D’s optional DSP circuitry enhances both sides of the communications circuit. The FT-857D’s DSP Unit features a 24-bit high-tech D/A chip for signal processing. Included are Bandpass Filter, Auto-Notch, and Noise Reduction filters, along with a Microphone Equalizer.
Big Radio Tuning Dial and Outstanding Ergonomics
Ease of operation of the FT-857D is enhanced by the large-diameter (1.7”) Main Tuning Dial, similar in size to the tuning knob of many base station rigs. Selectable tuning steps of 2 kHz/4 kHz per revolution allow easy navigation around your favorite bands, while important keys and switches are strategically placed around the front panel for quick access.
Frequency Range Transmit:
160 - 6 Meters, 2 Meters,
70 Centimetres (Amateur bands only)
5167.5 kHz (Alaska Emergency Frequency/USA Version)

0.1-56 MHz, 76-108 MHz, 118-164 MHz, 420-470 MHz
Emission Modes A1 (CW), A3 (AM), A3J (LSB/USB), F3 (FM),
F1 (9600 bps packet), F2 (1200 bps packet)
Frequency Steps 10 Hz (CW/SSB), 100 Hz (AM/FM/WFM)
Antenna Impedance 50 Ohms, Unbalanced
Operating Temperature Range -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
Dimensions (WxHxD) 155  x 52  x 233mm
Weight (appx) 2.1 kg
RF Power Output (@13.8 V DC)
   SSB/CW/FM  AM Carrier
 160- 6 Metres  100 W  25 W
 2 Metres  50 W  12.5 W
 70 Centimetres  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
Undesired Sideband Suppression >50 dB
Audio Response (SSB) 400 Hz-2600 Hz (-6 dB)
Microphone Impedance 200-10k Ohms (Nominal: 600 Ohms)
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
(-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 (option YF-122S installed): 2.3 kHz/4.7 kHz (-66 dB)
CW (option) YF-122C installed) : 500 Hz/2.0 kHz
  SSB/CW        AM         FM    
100 kHz-1.8 MHz - 32 μV -
1.8 MHz-28 MHz 0.2 μV 2 μV -
28 MHz-30 MHz 0.2 μV 2 μV 0.5 μV
50 MHz-54 MHz 0.125 μV 1 μV 0.2 μV
144/430 MHz 0.125 μV - 0.2 μV

(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 μV -
28 MHz-30 MHz  2.5 μV  0.32 μV
50 MHz-54 MHz  1 μV  0.16 μV
144/430 MHz  0.5 μV  0.16 μV
Image Rejection HF/50 MHz: 70 dB
144/430 MHz: 60 dB
Maximum Audio Output 2.5 W (4 Ohms, 10% THD or less)
Audio Output Impedance 4 to 16 Ohms
• MH-31A8J Hand Microphone
• MMB-82 Mobile Mounting Bracket
• DC Power Lead
Click to download FT-857 Br (FT-857_Brochure.pdf 1.8 Mb)
 FT-857 Information Brochure
Click to download FT-857D OM (FT-857D_Operating Manual.pdf 4.1 Mb)
 Operating Manual for the FT-857D
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