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
