Yaesu FT-857
Specifications
FT-857 Specifications
|
GENERAL
|
|
|
Frequency Range: Receive:
|
0.1-56, 76-108, 118-164 and 420-470 MHz |
|
Transmit:
|
160 - 6 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 ±4 ppm (-10 °C to +50 °C) |
|
0
|
|
|
Power Requirements:
|
DC 13.8V ±10 %, 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 lbs. (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:
|
±5 kHz (±2.5 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) |
| RECEIVER | |||
|
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. | |