SM64 Rev. 4.00
NTX403 Series Remote Mount UHF-FM Transceiver
Manual
Section 1 Description
1.1 Introduction
This manual contains information on the NTX403 Remote Mount UHF-FM Transceiver.
All derivative products will be covered by manual supplements, which can be obtained
from NAT as required.
Information in this section consists of purpose of equipment, features and specifications.
1.2
Purpose of Equipment
The NTX403 is an UHF FM transceiver for operation in the 403 MHz to 512 MHz band.
The unit is remotely mounted using a 1/4 ATR tray and is operated via an RS-422 serial
bus interface using a TH-Series TAC/COM control head.
1.3
Features
The unit conforms to a 1/4 ATR tray size and is capable of receiving and transmitting
over 403.000 to 511.99375 MHz.
1.4 Specifications
1.4.1 Electrical
Specifications
Power Supply +27.5
Vdc
Power
Voltage: Nominal
+27.5 Vdc
Maximum
30.3
Vdc
Minimum
22.0
Vdc
Emergency
18.0
Vdc
Current: Receive (Nom.) 500 mA @ +27.5 Vdc
Transmit (Max.) 2.5 A @ +27.5 Vdc
Input Signals
Mic Input
Audio signal, 100 mVrms
Push to Talk
Active ground signal, 15 mA max
Power On/Off
Active ground signal, 20 mA max
Serial Data In
RS-422 data from control head
Apr 19, 2005
Page 1-1
ENG-FORM: 800-0107.DOT
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