Installation Manual

Varactor-tuned Preselector Filter(s)
Provides bandpass filtering of the station Receiver RF input.
Receiver Front-End Circuitry
Performs filtering, amplification, and the first down conversion of the Receiver RF signal.
Receiver-specific piece of transceiver IC Circuitry
Consists of receiver-specific parts of a transceiver IC which performs the second down conversion,
filtering, amplification, and analog-to-digital conversion of the receive signal.
Analog to Digital Converter (ADC) Circuitry
Converts analog Receiver status signals to digital format for transfer to the controller circuitry on the
Transceiver board.
Return to Process
SLR 1000 Transceiver Board on page
48
Related Links
Receiver Subsystem Specifications on page 51
3.2.1
Receiver Subsystem Specifications
The following contains the SLR 1000 Repeater receiver subsystem Radio Frequency (RF) operating
specifications.
Table 12: SLR 1000 Repeater Specifications of the Receiver Subsystem
Parameter Specifications
VHF UHF
Frequency Bands 136-174 MHz 400–512 MHz
Selectivity 25 kHz/ 12.5 kHz (TIA603E) 83 dB/55 dB 80 dB/55 dB
Selectivity 25 kHz/ 12.5 kHz (TIA603) 83 dB/68 dB 80 dB/68 dB
Selectivity 25 kHz/ 12.5 kHz (ETSI) 70 dB/ 63 dB
Sensitivity (12 dB SINAD) 0.3 uV
Sensitivity (5% BER) 0.3 uV
Intermodulation Rejection (TIA603E) 80 dB
Intermodulation Rejection (ETSI) 70 dB
Spurious Rejection (TIA603E) 85 dB
Spurious Rejection (ETSI) 75 dB
Audio Distortion <3%
FM Hum and Noise 25 kHz/ 12.5 kHz 50 dB/ 45 dB
Return to Process
Receiver Subsystem on page 50
MN003557A01-AF
Chapter 3: SLR 1000 Transceiver Board
51