Carrier Level Squelch; Receiver Frequency Spread; Receiver Conducted Spurious Emissions; Audio Frequency Response - RF Technology R220 Operation And Maintenance Manual

7.4.13 Carrier Level Squelch

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

600Ω Ω Ω 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

600Ω Ω Ω 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 µ µ 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
Page 22
7 SPECIFICATIONS
RF Technology R220