FT-857 Specifications
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GENERAL
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Frequency Range: Receive:
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0.1-56, 76-108, 118-164 and 420-470 MHz |
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Transmit:
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160 - 6 Meters |
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0
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2 Meters |
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0
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70 Centimeters (Amateur bands only) |
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0
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5167.5 kHz: Alaska Emergency Frequency |
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0
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(U.S.A. version only) |
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Emission Modes:
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A1 (CW), A3 (AM), A3J (LSB/USB), |
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0
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F1 (9600 bps Packet), F2 (1200 bps Packet), F3 (FM) |
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Synthesizer Steps (Min.):
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10 Hz (CW/SSB), 100 Hz (AM), |
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0
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100 Hz (FM), 100 Hz (WFM) |
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Antenna Impedance:
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50 Ohm, Unbalanced |
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Operating Temp. Range:
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-10 ˇăC to +60 ˇăC (14 F to 140 F) |
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Frequency Stability:
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Better than ? ppm (-10 ˇăC to +50 ˇăC) |
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0
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Power Requirements:
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DC 13.8V ?0 %, Negative Ground |
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Current Consumption:
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Receive (Squelched) : 0.55A, |
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0
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Receive (Max. Audio) : 1A |
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0
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Transmit : 22A (@ 100W RF output) |
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Case Size:
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6.1" (W) x 2.0" (H) x 9.2" (D) (155 x 52 x 233 mm) |
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Weight:
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4.6 lb. (2.1 kg.) |
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0
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TRANSMITTER
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Power Output:
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160 - 6m : 100 Watts (25 Watts AM carrier) |
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0
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2m : 50 Watts (12.5 Watts AM carrier) |
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0
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70cm : 20 Watts (5 Watts AM carrier) |
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Modulation Types : SSB:
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Balanced Modulator |
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FM:
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Variable Reactance |
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AM:
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Early Stage (Low Level) |
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FM Maximum Deviation:
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? kHz (?.5 kHz on FM-N) |
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Spurious Radiation : Harmonics:
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At least 50 dB down (1.8 - 29.7 MHz) |
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At least 60 dB down (50/144/430 MHz)
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0 |
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Non-harmonic:
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At least 50 dB down (1.8 - 29.7 MHz) |
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0
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At least 60 dB down (50/144/430 MHz) |
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Carrier Suppression:
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At least 40 dB |
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Opp. Sideband Suppression:
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At least 50 dB |
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SSB Frequency Response:
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400 Hz - 2600 Hz (-6 dB) |
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Microphone Impedance:
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200 - 10 k Ohm (Supplied microphone: 2 k Ohm) |
| RECEIVER | |||
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Sensitivity:
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SSB/CW | AM-N | FM |
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100 kHz - 1.8 MHz (IPO off):
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- uV | 32 uV | - |
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1.8 - 28 MHz:
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0.25 uV | 2 uV | - |
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28 - 30 MHz:
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0.2 uV | 2 uV | 0.50 uV |
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50 - 54 MHz:
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0.125 uV | 1 uV | 0.2 uV |
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144/430 MHz:
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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. | |