Northern Airborne Technology NPX138 - Manual (Page 14)

NPX138 Panel Mount Radio Manual SM41 Rev. 4.00
1.4
Specifications
1.4.1 Electrical Specifications
Input power 28 Vdc nominal
Current consumption 0.5 A receive/2.0 A transmit (typical)
0.8 A receive/3.0 A transmit (max.)
Panel lighting 28 Vdc, 14 Vdc or 5 Vdc dependent on model.
Sidetone output 25 mW @ 600 Ω, adjustable.
Microphone Amplified Dynamic or equivalent, 150 Ω
balanced/unbalanced
Frequency range 138.000 MHz to 173.995 MHz
Tone capability 38 standard CTCSS tones
Operating mode simplex or semi-duplex
1.4.2 Receiver
Channel increments 5 kHz/6.25 kHz
Audio output 100 mW @ 600 Ω Bal/Unbal
Sensitivity
Main
0.5 µV max. @ 12 dB SINAD
Guard 0.5 µV max. @ 12 dB SINAD
Spurious response rejection 70 dB
Adjacent channel rejection
NPX138 (all models) 70 dB min. @ ± 25 kHz
NPX138N (all models)
Wideband 70 dB min. @ ± 25 kHz
Narrowband 60 dB min. @ ± 12.5 kHz
Intermodulation rejection 70 dB
Hum and Noise ratio
Unsquelched > 50 dB
Squelched < -80 dBw
Distortion < 4% @ rated output
Page 1-2 Nov 10, 2003
ENG-FORM: 800-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.