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GD400H
Air Rate: 1200 - 4800 bps
RF Output Power: 25 W
Frequency: 400 - 470 MHz
Dimensions:145x109x41mm
A professional wireless data transceiver operating at 400 MHz frequency band with programmable air rate of 4800, 2400 and 1200 bps. Maximum RF output power is 25 watts and can be programmed from 25 watts down to 5 watts with five levels. It is suitable for long range data communications.
? General
| Frequency Range | 400 - 430MHz,450 - 470MHz |
Channel Capacity | 60 |
Channel Spacing | 25KHz |
Frequency Stability | ±2.0ppm (-40~+70?) |
Operating Voltage | DC 11V to 14V ( Typical 12V ) |
Current Drain | Standby:<80mA |
Antenna Impedance | 50 ohm unbalanced |
Dimensions (WxHxD) | 145mmx109mmx41mm |
Weight | 770g |
Operating Temperature | -40?- +70? |
?Receiver
| Type of Receiver | Double, super heterodyne |
Intermediate Freq | 45MHz(1st IF), 455KHz(2nd IF) |
Sensitivity | 0.2 µV @12dB SINAD |
Squelch Sensitivity | 0.25uV |
Adjacent Channel Selectivity | greater than -70dB |
Spurious and Image Rejection | greater than -70dB |
Intermodulation | 65dB |
Output Audio Distortion | 3% at 1KHz for ±3KHz deviation |
?Transmitter
| RF Output Power | 25W, 20W, 15W, 10W and 5W, programmable for GD400H-25 |
Maximum Frequency Deviation | ±5KHz |
Output Harmonic | less than -65dB |
Spurious Emissions | less than 0.25uW (30MHz to 1GHz) |
Distortion | =2.5% |
Transmitter Attack Time | <5ms |
?Data and Interface
| Modulation | MSK |
Air Rate | 4800, 2400 and 1200, programmable |
Interface Baud Rate | 300 - 38400bps programmable |
Interface Data Bit | 8 or 7 bits programmable |
Interface Parity Bit | None / Even / Odd programmable |
Interface Stop Bit | 1 bit or 2 bits programmable |
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