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YAESU - FT857D
The FT-857D, the world smallest HF/VHF/UHF mobile transceiver, provides base station-type performance from an ultra-compact package that is ideal for mobile or external battery portable work. Wide frequency cove rage, outstandig receiver performance, and the convenience of optional remote-head operation make the FT-857D the expert is choice for high-performance mobile operation!
The new FT-857D version includes coverage of the U.S. 60-meter (5 MHz) band, plus the previously-optional DSP circuitry, at no additional cost!
FEATURES |
Ultra Compact Design
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.
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-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 (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-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!
Versatile Memory System
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 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-857’s optional DSP circuitry enhances both sides of the communications circuit. The FT-857’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-857 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.
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Includes :
FT-857D 100W Ultra-Compact HF/VHF/UHF All Mode Transceiver w/MH-31A8J
Mounting bracket.
DC power cord.
Spare ATC fuses.
FT-857D Specifications
| GENERAL |
| Frequency Range: Receive: |
0.1-56, 76-108, 118-164 and 420-470 MHz |
| Transmit: |
160 - 6 Meters including 60 Meters |
| 0 |
2 Meters |
| 0 |
70 Centimeters (Amateur bands only) |
| 0 |
5167.5 kHz: Alaska Emergency Frequency |
| 0 |
(U.S.A. version only) |
| Emission Modes: |
A1 (CW), A3 (AM), A3J (LSB/USB), |
| 0 |
F1 (9600 bps Packet), F2 (1200 bps Packet), F3 (FM) |
| Synthesizer Steps (Min.): |
10 Hz (CW/SSB), 100 Hz (AM), |
| 0 |
100 Hz (FM), 100 Hz (WFM) |
| Antenna Impedance: |
50 Ohm, Unbalanced |
| Operating Temp. Range: |
-10 °C to +60 °C (14 F to 140 F) |
| Frequency Stability: |
Better than ? ppm (-10 °C to +50 °C) |
| 0 |
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| Power Requirements: |
DC 13.8V ?0 %, Negative Ground |
| Current Consumption: |
Receive (Squelched) : 0.55A, |
| 0 |
Receive (Max. Audio) : 1A |
| 0 |
Transmit : 22A (@ 100W RF output) |
| Case Size: |
6.1" (W) x 2.0" (H) x 9.2" (D) (155 x 52 x 233 mm) |
| Weight: |
4.6 lb. (2.1 kg.) |
| 0 |
| TRANSMITTER |
| Power Output: |
160 - 6m : 100 Watts (25 Watts AM carrier) |
| 0 |
2m : 50 Watts (12.5 Watts AM carrier) |
| 0 |
70cm : 20 Watts (5 Watts AM carrier) |
| Modulation Types : SSB: |
Balanced Modulator |
| FM: |
Variable Reactance |
| AM: |
Early Stage (Low Level) |
| FM Maximum Deviation: |
? kHz (?.5 kHz on FM-N) |
| Spurious Radiation : Harmonics: |
At least 50 dB down (1.8 - 29.7 MHz) |
| At least 60 dB down (50/144/430 MHz) |
0 |
| Non-harmonic: |
At least 50 dB down (1.8 - 29.7 MHz) |
| 0 |
At least 60 dB down (50/144/430 MHz) |
| Carrier Suppression: |
At least 40 dB |
| Opp. Sideband Suppression: |
At least 50 dB |
| SSB Frequency Response: |
400 Hz - 2600 Hz (-6 dB) |
| Microphone Impedance: |
200 - 10 k Ohm (Supplied microphone: 2 k Ohm) |
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RECEIVER
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| Sensitivity: |
SSB/CW |
AM-N |
FM |
| 100 kHz - 1.8 MHz (IPO off): |
- uV |
32 uV |
- |
| 1.8 - 28 MHz: |
0.25 uV |
2 uV |
- |
| 28 - 30 MHz: |
0.2 uV |
2 uV |
0.50 uV |
| 50 - 54 MHz: |
0.125 uV |
1 uV |
0.2 uV |
| 144/430 MHz: |
0.125 uV |
- |
0.2 uV |
| SSB/CW/AM-N figures are for 10 dB S/N, 12 dB SINAD on FM |
| Squelch Sensitivity : |
SSB/CW/AM |
FM |
| 1.8 - 28 MHz : |
2.5 uV |
- |
| 28 - 30 MHz : |
2.5 uV |
0.32 uV |
| 50 - 54 MHz : |
1 uV |
0.16 uV |
| 144/430 MHz : |
0.5 uV |
0.16 uV |
| Intermediate Frequencies : |
0 |
| 1st IF : |
68.33 MHz (SSB/CW/FM/AM) |
| 0 |
10.7 MHz (W-FM) |
| 2nd IF : |
455 kHz |
| Image Rejection : |
Better than 70 dB (1.8 - 30 MHz, 50 - 54 MHz) |
| 00 |
Better than 60 dB (144 - 148 MHz, 430 - 450 MHz) |
| IF Rejection : |
Better than 60 dB |
| Selectivity (-6 / -60 dB) : |
0 |
| SSB/CW : |
2.2 kHz/4.5 kHz |
| CW : |
500 Hz/2.0 kHz (Optional YF-122C installed) |
| CW-N : |
300 Hz/1.0 kHz (OptionalYF-122CN installed) |
| AM : |
6 kHz/20 kHz |
| FM : |
15 kHz /30 kHz (-6 / -50 dB) |
| Audio Output : |
2.5 W into 4 Ohm @ 10% THD |
| Audio Output Impedance : |
4 Ohm - 16 Ohm |
| 0 |
| Specifications are subject to change without notice, and are guaranteed within amateur bands only. |
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