Operating instructions

Page 20 RF Technology R350/R500
7 SPECIFICATIONS 7.4.6 IF Frequencies
7.4.6 IF Frequencies
First IF frequency 45 MHz
Second IF frequency 455 KHz
7.4.7 Sensitivity
-119 dBm Max. for 12 dB SINAD
-116 dBm Max. for 20 dB Quieting
7.4.8 Selectivity
25 KHz spacing - 80dB per RS204C
12 KHz spacing - 70dB per ECR-235
7.4.9 Spurious and Image Rejection
90dB
7.4.10 Inter-modulation
80dB
7.4.11 Modulation Acceptance BW
25 KHz spacing - 7.5 KHz per RS204C
12.5 KHz spacing - 3.75 KHz per RS204C
7.4.12 Noise Squelch
Adjustment Range: 6 - 26dB SINAD, 25KHz versions
6 - 18 dB SINAD, 12.5 KHz versions
Attack Time: 20 mSec. above 20dB Quieting
Release Time: 150 mSec. at 20dB Quieting decreasing to 20ms above 2µV
preset threshold
Hysteresis: Hysteresis is equal to approximately 2dB change in noise
quieting