Technical Manual

2-8 ATLAS 4500 Multimode Station Technical Manual July 2016
Specifications Section 2 - Product Overview
Analog FM Hum & Noise
(S/N Ratio)
45 dB
Maximum Deviation (Analog) ± 2.5 kHz ± 2.5 kHz ± 5 kHz
Maximum Deviation (Digital) ± 3110 Hz ± 3110 Hz ± 3110 Hz
Table 2.5 Receiver Specifications
Parameter VHF UHF 700 / 800 MHz
Frequency Range 136-174 MHz 380-520 MHz 792-825 MHz
Analog Sensitivity: 12dB
SINAD
-119 dBm -119 dBm -119 dBm
Digital Sensitivity: for 5%
BER
-119 dBm -119 dBm -119 dBm
Signal Displacement
Bandwidth
± 1 kHz
Frequency Stability
[-22°F to +140°F
(-30°C to +60°C)]
0.5 PPM
Analog Adjacent Channel
Rejection (TIA603D)
72 dB
Digital Adjacent Channel
Rejection
60 dB
Intermodulation Rejection 82 dB
Spurious and Image Response
Rejection
90 dB
Audio Response
+1, -3 dB from 6 dB per octave de-emphasis
300-3000 Hz referenced To 1000 Hz at line output
Analog Audio distortion
(at 1000 Hz)
2%
Digital Audio distortion
(at 1000 Hz)
As per TIA
Analog Hum & Noise (TIA) 45 dB
Digital Hum & Noise (TIA) As per TIA
RF Input Impedance 50 
Table 2.6 Standards Compliance
EFJohnson stations comply with the following standard specifications
Standard Specification
P25 Digital Operation TIA-102.CAAB-D
Digital Phase 2 (TDMA) Operation TIA-102.CCAB-A
Analog FM Operation TIA 603-D
EMI/EMC NTIA Manual Chapter 5
PSTN Line Isolation FCC Part 68 (USA)
Table 2.4 Transmitter Specifications (continued)
Parameter VHF UHF 700 / 800 MHz