Standard Horizon HX400, Service Manual

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Specifications
Specifications HX400 Service Manual
General
Frequency Range: 156.025 MHz to 163.275 MHz (Marine Band + WX Band)
134.000 MHz to 174.000 MHz (LMR Band)
Channel Spacing: 25 kHz/12.5 kHz
Frequency Stability: +2.5 ppm (-22 °F to +140 °F [-30 °C to +60 °C])
Emission Type: 16K0G3E (Marine Band)
16K0F3E (LMR Band: Wide)
11K0F3E (LMR Band: Narrow)
Antenna Impedance: 50 Ω
Supply Voltage: 7.4V DC, Negative Ground (Battery Terminal)
Current Consumption: 320 mA (Receive, Typical at AF MAX.)
50 mA (Standby)
1.6 A / 0.8 A (TX: 5 W / 1W)
Operating Temperature: -22 °F to +140 °F (-30 °C to +60 °C)
Case size (W x H x D): 2.24” x 5.24” x 1.57” (57 x 133 x 40 mm)
w/o knob & antenna
Weight (Approx.): 12.3 oz (350 g) (w/FNB-115LI or SBR-29LI, Belt Clip, & Antenna)
Transmitter
RF Power Output: 5 W / 1 W (@7.4 V )
Modulation Type: Variable Reactance
Maximum Deviation: ±5.0 kHz (Wide) / ±2.5 kHz (Narrow)
Spurious Emission: –36 dBm (<1 GHz), –30 dBm (>1 GHz)
Microphone Impedance: 2 kΩ
Receiver
Circuit Type: Double-Conversion Superheterodyne
Intermediate Frequencies: 1st: 67.65 MHz, 2nd: 450 kHz
Adjacent Channel Selectivity: 80 dB typical (Wide),
70 dB typical (Narrow)
Intermodulation: 72 dB typical
Sensitivity (LMR Band): -6 dBμV (0.25 μV) for 12 dB SINAD
Sensitivity (Wide): 12 kHz / 25 kHz (–6 dB / –60 dB)
Sensitivity (Narrow): 6 kHz / 18 kHz (–6 dB / –60 dB)
AF Output (Internal SP): 700 mW @16 Ω for 10 % THD (@7.4 V)
AF Output (External SP): 350 mW @8 Ω for 10 % THD (@7.4 V)
Performance specifications are nominal, unless otherwise indicated, and are subject to change without no -
tice.
Measured in accordance with TIA/EIA-603.