NPX136D Series Panel Mount P25 VHF Transceiver
SM68 Installation and Operation Manual
Section 1 Rev: 1.00
Issue 4
Page 1-1
ENG-FORM: 800-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 1 Description
1.1
Introduction
Information in this section consists of product description, design features and specifications for the NPX136D
Series Panel Mount P25 VHF Transceiver. All derivative product information shall be contained in the
applicable manual supplement, which may be obtained from Northern Airborne Technology Ltd. as required.
Review all notes, warnings and cautions.
1.2
Product Description
The NPX136D panel mount P25 VHF transceiver is a stand-alone radio designed for the single mission
user. It provides all the features needed to satisfy communications within the VHF high band. The
NPX136D incorporates NAT’s proven user-friendly operating system with on-line help, making it easy to
program and use. The small size makes this radio ideal for airframes where size and weight are a factor.
1.3
Design Features
The radio covers a frequency range of 136.0000 to 173.9975 MHz in 2.5/6.25 kHz increments. Each of
the 255 available channels can operate in one of three modes: wide band analog, narrow band analog or
digital P25 Phase I.
A SCAN function allows scanning of selected channels. Transmit power of either 1 watt or 10 watts is
selectable from the front panel. Simplex and semi-duplex operations are available. A guard receiver is
standard with the -070 model.
Conveniently located beside the display are separate main volume, guard volume and transmit select
switches. Easily identified along the bottom of the front panel are squelch test, channel up/down and
display controls. The aircraft dimmer bus provides control for the panel lighting.
1.4
Specifications
1.4.1
Radio Specifications
+28Vdc Power
Nominal:
+27.5 Vdc
Maximum: +30.3
Vdc
Minimum: +22.0
Vdc
Emergency: +18.0
Vdc
Current (Under standard conditions)
NPX136D-000
NPX136D-070
Idle:
330 mA (max.)
380 mA (max.)
Receive:
380 mA (max.)
430 mA (max.)
Transmit:
2.6 A (max.)
2.6 A (max.)
+28V Lights
+28 Vdc, 300 mA (max.)
Frequency Range
136.000 – 173.9975 MHz
Operating Modes
Project 25 and conventional Analog Simplex or Semi-Duplex
