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Dimensions
for inside unit: 3.5"h x 8"d x 19"w (rack mountable)
- Dimensions
for outside antenna unit: 14" by 10" by 5" not including antenna
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Antenna
adds 6 feet vertical height to assembly.
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Cable
to antenna unit: Cat 5 flooded outdoor cable, up to 600 feet no
effect on RF signal.
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Lighting
Protection: 15 Joules at 600 µSec duration
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Temperature
operating range: -20¡ to +50¡ C
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Frequency
setting: Factory set 121.725 MHz or 135.075 MHz
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Frequency
stability: 2 PPM
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Adjacent
channel isolation: 80 db, prevents false keying of Ground Link
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VA
Sensitivity .12 µV for 10 db SN ratio
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Squelch
range: .12 µV to 5 µV not used in VA mode
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Transmit
power: 1 Watt PEP
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Modulation:
Single sideband with carrier, 80% modulation limit
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Channel
Selectivity: 8.5 kHz Audio range: 150 to 4,500 Hz
Processor
and Interface Components
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Digital
Signal Processor (DSP): Analog Devices ADSP-2185L 50 MIPS
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Control
Processor: Intel 8752 Microprocessor
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Control
Program: Custom BASIC interpreter with Radio, Telephone, and Voice
keywords
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Voice
Processing: Telephone based CODEC
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Voice
Coding: U-Law 8 bit coding at 8000 samples per second
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Voice
bit rate: 64,000 bit per second, toll quality speech
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Stored
Voice Format: 8000 Bytes per second of speech PCM WAV format
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Voice
Recognition: Custom DSP code based for speaker independence
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Storage
Medium: Compact Flash Storage Card
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BASIC
Program and Voice Messages: Stored on Compact Flash Card
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Dual
opposite Phased Verticals with active Phasing Module
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Allows
quasi full duplex operation on AM carrier signals
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60
db of isolation between TX and RX antenna ports
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2.5
dbd gain on antenna system
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Antenna
has 1.5 Degree down tilt to limit airborne coverage per FCC specifications
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Dialing:
Pulse or Tone
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Call
Progress: Ring, Busy, Fast Busy, Dial Tone
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Answer
Supervision: Line Current, or Voice detection
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Auto
Announce: Speaks preset message to Telephone line on Answer Telephone
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Line
Detection: Ring and Loop Current Detection
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Telephone
Frequency range: 300 to 3000 Hz
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Lighting
Protection: 5 Joules at 600 µSec duration
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BASIC
program allows custom scripts for each end user Interactive operation
with pilot using Voice Activation and Menu options
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Supports
Answers with two Key clicks of Pilot Transmitter
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Support
Voiced Yes, No, commands
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Abort
of Basic Program with Multiple Transmit keying to Reset Ground Link
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