Northern Airborne Technology NPX136D - Manual (Page 6)

NPX136D Series Panel Mount P25 VHF Transceiver
SM68 Installation and Operation Manual
Section 1 Rev: 1.00
Issue 4 Page 1-2
ENG-FORM: 800-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Channels 255 max. Plus GD1 and GD2
Zones 16 max.
Sub-audible signalling CTCSS - 42 tones from 67.0 to 254.8 Hz
CDCSS - 83 data patterns
Remote Interface RS232C Data, to PC for Channel Loading and Firmware
Loading
RF Input/Output Impedance 50 ohms
Voice Digital Mode IMBE 4.4 kb
Frame Re-sync Interval 180 ms
Error Correction Algorithms RS / Golay / Hamming
Channel Increments 2.5 / 6.25 kHz
Channel Separation 12.5 / 25 kHz
Scan Capability 16 channels max. 1 home, 1 priority, 14 list.
Scan Rate 8 channels per second.
1.4.2 Main Receiver
Reference Sensitivity (12 dB SINAD) ≤-113 dBm
Reference Sensitivity (5% BER) ≤-113 dBm
Adjacent Channel Rejection ≥70 dB (25 kHz BW)
Spurious Response Rejection ≥70 dB
Intermodulation Rejection ≥70 dB
Audio Output Power 100 mW (600 ohms) rated
Audio Dynamic Range ≥37 dB
Audio Frequency Response 300 – 3000 Hz, Standard: EIA Std. -6 dB
(+1/-3 dB) / oct de-emphasis.
300 – 500 Hz, Standard with an additional
+6 dB/oct permitted.
2500 – 3000 Hz, Standard with an additional
-12 dB / oct permitted.
Audio Distortion 4% typical (10% max.)
Conducted Spurious Emissions ≤-57 dBm
FM Hum and Noise ≥34 dB (12.5 kHz BW)
≥40 dB (25 kHz BW)
≤-57 dBW squelched
1.4.3 Guard Receiver (NPX136D-x70 only)
All specifications are identical to the main receiver with the following exception.
Audio Output Power, minimum: 10 mW (adjustable)
Note : Main and Guard cannot be 455 kHz from each other due to 2nd IF interference