If Frequencies; Sensitivity; Selectivity; Spurious And Image Rejection - RF Technology R220 Operation And Maintenance Manual

7 SPECIFICATIONS
7.4.6

IF Frequencies

First IF frequency 45 MHz
Second IF frequency 455 KHz
7.4.7

Sensitivity

-120 dBm Max. for 12 dB SINAD
-117 dBm Max. for 20 dB Quieting
7.4.8

Selectivity

12 KHz spacing - 70dB per ECR-235
7.4.9

Spurious and Image Rejection

90dB
7.4.10

Intermodulation

80dB
7.4.11

Modulation Acceptance BW

12.5 KHz spacing - 3.75 KHz per RS204C
7.4.12

Noise Squelch

Adjustment Range: 6 - 18 dB SINAD
Attack Time: 20 mSec. above 20dB Quieting
150 mSec. at 20dB Quieting decreasing to 20ms above 2 µ V
Release Time:
preset threshold
Hysteresis:
Hysteresis is equal to approximately 2dB change in noise
quieting
RF Technology R220
7.4.6 IF Frequencies
Page 21