1.2 Receiver Specifications
Sensitivity 0.256uV (-119dBm) for 10dB SINAD - J3E Mode (With RF pre-amp on)
Selectivity J3E -1kHz and + 4kHz better than 60dB
Selectivity F1B (optional) -500Hz and + 500Hz better than 45dB
Desensitisation -1kHz and + 4kHz better than 60dB
-10kHz and +10kHz better than 71dB
-20kHz and +20kHz better than 80dB
-50kHz and +50kHz better than 87dB
The level of an unwanted signal above the level of a wanted signal that will
reduce the SINAD of the wanted signal producing 10dB SINAD to 7dB
SINAD
Image rejection Better than 76dB
Spurious response ratio Better than 70dB
Cross modulation -20kHz and +20kHz better than 82dB
The level of an unwanted signal that is 30% AM modulated and at
20kHz above the level of a wanted signal that is producing 10dB SINAD
that will cause this wanted signal SINAD to reduce by 3dB
Blocking -20kHz and +20kHz better than 80dB
The level of an unwanted signal above the level of a wanted signal that will
reduce the SINAD of the wanted signal producing 10dB SINAD to 7dB
SINAD
Intermodulation 85dB - the level of an unwanted signal in relation to a wanted signal.
Inband IMD Greater than 34dB
Clarifier range Receive only 1Hz steps up to ±1kHz (dependant on configuration).
AGC efficiency Less than 6.0 dB variation with an input signal of 6uV(-91.4dBm) to
3V(+22.5dBm).
Audio Output 4W into 4 Ohms, 2W into 8 Ohms at less than 5% distortion
Audio output impedance 2 to 80 Ohms
Audio response Less than 6dB variation from 350Hz to 2750Hz
Audio distortion Less than 5% at rated power J3E mode
Input protection Better than 30V RMS from a 50 ohm source
BARRETT 900 SERIES TRANSCEIVERS
PAGE 7
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