Technical Specification
5C.1-4 Model Chart and Test Specifications
3.3 Receiver
3.4 Self-Quieting Frequencies
Self-quieting frequencies are frequencies that are also generated by the radio and cause internal
interference. On these frequencies the interference caused by the self-quieter spur is great enough
that a radio will not meet its receiver sensitivity specification.
The frequencies are: Midband 67.2, 83.78 and 84MHz.
SPECIFICATION ITEM TYPICAL VALUE
Channel Spacing 12.5 or 20/25 kHz
Sensitivity @ 12.5 kHz < 0.35uV (12dB SINAD)
Sensitivity @ 25 kHz < 0.35uV (12dB SINAD)
Intermodulation >65dB ETS; >70dB with Base Option
Adjacent Channel Selectivity >60dB (12.5kHz); >70dB (20/25kHz) ETS
Spurious Rejection >70dB ETS
Audio Distortion @ Rated Audio <5%
Hum and Noise (CCITT) >40dB (12.5kHz); >45dB (20/25kHz) CCITT
Audio Response (300 - 3000 Hz) Flat or De-Emphasised
Co-channel Rejection <12dB (12.5kHz) , <8dB (20/25kHz) ETS
Conducted /Radiated Emission <2nW (0,1..1000MHz); <20nW (1..4GHz)
Receive after transmit time <25msec
Audio Output Power 4W (internal speaker); <13W external
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