User Guide

After Sales
Technical Documentation
Performance Specifications
THX–4
Original, 09/94 Page 2–7
Receiver Branch
Frequency band 917.0125 to 949.9875 MHz
Rx First Intermediate Frequency 45 MHz
Rx Second Intermediate Frequency 450 kHz
Sensitivity better than: < –110 dBm (20 dB SINAD)
Adjacent channel selectivity > 55 dB
Spurious response rejection > 55 dB
Intermodulate rejection > 55 dB
RSSI dynamic range > 60 dB
RSSI starting level < 113 dBm
Harmonic distortion better than: <–26 dB
Blocking or desensitization at 1
MHz from receive frequency:
 band A >–50 dBm
 band B >–23 dBm
Demod. aud. output level (2.3 kHz) 50 mV nominal
Demod. audio phase inverted
Demodulation noise <– 32 dB
Demod. audio frequency response 300Hz–3kHz with 6dB/ octave
de–emphasis