User Manual

Page 22 RF Technology R220
7.4.13 Carrier Level Squelch
7 SPECIFICATIONS
7.4.13 Carrier Level Squelch
Carrier level squelch can be used when it is necessary to set the opening point above
26dB SINAD as may be required in link applications. The minimum adjustment
range is 1 to 200
µ
V.
7.4.14 Receiver Frequency Spread
Less than 1 dB change in sensitivity over the band
7.4.15 Receiver Conducted Spurious Emissions
Less than -57dBm from 1 to 2900 MHz
7.4.16 Audio Frequency Response
600
Ω
ΩΩ
Ω
Line and Direct Output:
+1/-3dB 300-3000 Hz relative to either a flat
response or 750
µ
s de-emphasis with the high pass and notch filters bypassed.
+1/-6 dB with the filters in circuit.
Sub-Audio Output:
+1/-3dB 67-250 Hz
7.4.17 Audio Output Level
600
Ω
ΩΩ
Ω
Line:
Adjustable -10 to +10dBm
Monitor Loudspeaker:
5 Watts with external speaker, 0.3 Watt with internal
speaker
Discriminator and Sub-Audio
: Nominally equal to 1 volt peak at rated system
deviation
7.4.18 Audio Distortion
750
µ
µµ
µ
s De-Emphasis:
Less than 3% at 1 KHz and 60% of rated system deviation
Flat Response:
Less than 5% at 1 KHz and 60% of rated system deviation
7.4.19 Channel Select Input/Output
Coding
: 8 lines BCD coded 00-99