HF Transceiver CODAN NGT SRx

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HF Transceiver CODAN NGT SRx

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HF Transceiver Codan NGT SRxHF Transceiver Codan NGT SRx HF Emetteur-récepteur Codan NGT SRx (630 kb)
HF Transceiver Codan NGT SRx HF Emetteur-récepteur Codan NGT SRx Specifications (45 kb)

The NGT SRx HF Transceiver is specially designed to provide comprehensive and advanced High Frequency (HF) communication solutions. It is cost-effective and can serve all your remote communications needs from high quality voice transmission to email, fax, GPS tracking and telephone interconnection.

While incorporating the usual features of CODAN leading edge HF radio technology and renowned reliability, the NGT SRx has been built as a one radio solution to suit any conditions or configurations including solar powered systems.

CODAN user-friendly interface and self-test capabilities ensure the CODAN NGT SRx is easier to install, operate and manage than other transceivers. It is also fully interoperable with other HF networks to provide seamless HF communication. With a memory capacity to support future enhancements, CODAN NGT SRx is truly capable of being easily upgraded to suit your needs.

Flexible, reliable and clear communications

Robust base, mobile and portable configurations

  • NGT SRx HF transceiver is designed for quick deployment in base, mobile and portable configurations. The innovative mounting equipment and connectors enable the CODAN NGT SRx to be easily installed and quickly configured.
  • All CODAN transceivers undergo rigorous testing and comply with the highest industry standards, including AS/NZS 4770:2000, AS/NZS 4582:1999, FCC, CE, and NTIA.
  • The 50 ohm antenna output is fully protected against any load conditions including short circuit, open circuit and high VSWR, which can destroy other transceivers. The transceiver’s power input is also fully protected against overvoltage and reverse polarity.
  • Excellent sensitivity and the high dynamic range of the NGT receiver ensures better reception in the most difficult conditions. The NGT SRx includes a high stability frequency reference of 0.3 ppm as standard, which ensures improved data transmission accuracy and performance.
  • Field experience reveals an exceptionally high Mean Time Before Failure (MTBF) of 360,000 hours (30 years), which provides reliable and continuous communications in challenging conditions.
  • A three year warranty is available for the NGT SRx Transceiver and all other CODAN manufactured products as a guarantee of product quality. This is backed by a worldwide service and support network, and 24x7 in-house customer service support.

Better communications with DSP technology

  • Cleverly decodes multiple Selcall protocols and ALE signals simultaneously to enable maximum interoperability with other manufacturer’s network systems.
  • Compresses the dynamic range of voice signals prior to transmission, resulting in clearer and more intelligible signals at receiving stations.
  • Provides renowned clarity with noise reduction, Easitalk, by minimising the effect of interference and reducing noise when listening to a channel. Easitalk operates at the press of a button and the result is a loud and clear signal at all times. Users have a choice of algorithms to suit personal preferences or specific interferences.

CODAN comprehensive communication solutions

HF Transceiver Handset

CODAN provides a range of communication solutions to cover all modern needs.

Data, email and internet

With a HF data modem and appropriate software, the NGT SRx HF transceiver operates seamlessly with all popular email applications, including POP3 and SMTP based applications.

 GPS location and tracking

When used with a GPS receiver, emergency calls sent to other transceivers or base stations automatically include the current GPS positioning.

When used with CODAN tracking software, a computer equipped base station can track hundreds of mobile units on a single map. This provides affordable fleet management and coordination. For added fleet security, warning messages can be issued if a mobile enters a no-go area.

For extra protection, GPS data can be encrypted so positions are only seen by authorised users.

Telephone interconnect

With CODAN telephone interconnect solution, users have a seamless ability to make and receive telephone calls on an HF transceiver. When an unattended transceiver is called, the telephone caller can log their phone number in the transceiver’s memory.

With optional MS Windows® software, users can locally or remotely create and configure features such as access control rules, pre-programmed quick dial numbers, self addresses, and call log information.
Advanced calling facilities

The NGT SRx provides fully automated Selcall, Phone calls, Message calls, calls with GPS position information, and calls with remote program capabilities. All incoming calls are time-stamped and stored in a call log to identify precisely when each call arrived.


The CODAN HF transceiver provides full interoperability with all Selcall systems including UN, CODAN and other manufacturers’ systems.

Selcall gives users more flexibility. An operator can call a single transceiver and only that unit will respond—no more listening to noise while waiting for a call. The called transceiver will also signal that the message has been received.

Phone call

Telephone calls can be made seamlessly via bases equipped with a telephone interconnect. This is done without the need of the operator’s involvement to control the telephone interconnect.

Message call

Text messages of up to 90 characters can be sent or received without the need for an external computer or device. Messages can be entered via a handset, selected from preset messages, or entered from a computer terminal. The data may be encrypted for added privacy.

 GPS call (with a GPS receiver)

Displays a live GPS position on the handset by latitude and longitude, and enables users to send their position to another transceiver or interrogate another transceiver for its position.

Get Status call

Delivers remote capability where another station can test parameters such as signal strength, battery voltage levels, VSWR and RF power output. This allows a technician to remotely diagnose a station and determine if servicing or support is needed.

Over-The-Air (OTA) remote capabilities

Configure and manage an CODAN NGT SRx HF SSB transceiver or network from a central location by sending text messages from the control transceiver. The ability to configure other transceivers, such as adding new channels and changing the scan table, is convenient when distance is a factor.

Remotely disable or stun an CODAN NGT SRx by sending a command message from the base transceiver to the remote CODAN transceiver. In the event of theft, this prevents users from transmitting or receiving. Even after the transceiver is disabled, it remains on-air. This means the transceiver, if attached to a GPS receiver, can be interrogated for its position using a base transceiver.

CODAN sophisticated and user-firendly interface

Innovative handset and user-friendly interface

Integrated compact design, similar to a mobile phone, provides easy control of the transceiver. The CODAN handset comprises of a microphone, a large and clear LCD backlit display, and keypad.

Adjustable backlighting is automatically activated by incoming calls, or at the press of a button, and provides the best viewing angle for users. When the CODAN transceiver is idle, an auto-dim capability activates for efficient power usage.

A smart address book stores up to 100 addresses, including names, call locations and even pre-programmed text messages. These can be easily retrieved via the user-friendly menu.

Menu driven access enables easy operation for untrained users and efficient configuration and management of equipment and networks. The NGT SRx can be tailored according to the needs of different users or even emulate other manufacturer’s transceivers, through features such as:

  • Configurable hot keys to provide easy access to one-touch calling and pre-programmed sequences.
  • Direct calling at the press of a button, including simple voice operation to sophisticated ALE-reliant calling procedures.

Smart monitoring and scanning

When an operator is absent, the NGT SRx generates an automatic log containing the caller’s identity, time and channel number that can be displayed upon their return.

With multiple net adaptive scanning, the NGT SRx automatically adjusts scan times for multiple networks according to the channels’ preset scan times. This feature gives the most efficient scanning time possible for both Selcall and voice detection.

The NGT SRx features flexible scanning networks, with up to 10 scan tables containing 100 channels each. As well as supporting 500ms Selcall scan rates and being fully adjustable, the transceiver’s DSP is designed to reliably detect and decode Selcall signals within 250ms and ALE signals within 125 ms. When compared with other transceivers, this enables twice as many channels to be scanned.

The transceiver can scan all the channels from one or more enabled scan tables. When a particular channel is included in multiple scan tables, the channel is scanned once with the slowest scan time to give the shortest possible total scanning time. Up to 100 channels can be scanned in total.

Adjustable pre-amble time for Selcall and ALE calling enables network response times to be optimised.

With the syllabic Voice Mute, the NGT SRx effectively detects voice patterns even in high noise environments. This ensures mute is only opened after it detects speech on any scanned or monitored channels.

When selective calling is used, users are able to scan multiple channels or networks. The Selcall Mute is only opened when the transceiver receives a selective call, and the operator is notified by a tone.

When the NGT SRx receives no key entries or push-to-talk commands, it automatically returns to Selcall scan after a selectable time to avoid missed calls.

 Multilevel access and security

Lock and hide sensitive information by configuring different access levels for users and administrators. This ensures information or radio configurations are protected and cannot be changed or displayed without permission.

CODAN automatic link establishment (ALE)

HF SSB Transceiver  CodanFED-STD-1045 ALE (Optional)

Fully FED-STD-1045 ALE compliant and interoperable with MIL-STD-188-141B

Unique capabilities such as maintenance of channel quality information (LQA) on a 24-hour basis. This enables the transceiver to select a suitable channel at any time of the day, from the moment it is switched on.

Faster channel selection than conventional ALE system with significantly less sounding activity required.

Listen-Before-Transmit capability that detects voice and data traffic on the channel before initiating ALE. This prevents calling on channels that are engaged.

Virtual service addressing that supports multiple services such as voice, data and email.

Full support of all transceiver messaging capabilities, including Phone calls, GPS polling and sending, Emergency calls, and Remote Diagnostics. This is achieved using the messaging capabilities of ALE.

Multiple network scanning capability enables multiple networks to be scanned at the same time. An ability to simultaneously decode Selcall and ALE protocols on the same channel enables maximum interoperability in mixed vendor network environments.

CODAN complete control and simple service ability

Computer control and programming

Computer controllable for uses such as messaging, GPS tracking and logging, and other automated applications.

Conveniently programmable, even when it is mounted in a vehicle, through the RS232 port on the handset.

Configurable using NGT System Programmer (NSP)—user-friendly PC based software designed specifically for the NGT SRx.

Innovative design for easy installation and serviceability

The handset can be mounted in any position for easy access and viewing; especially important in a vehicle where space is limited. With the comprehensive user-friendly interface and full control over the handset, a driver or passenger can operate the transceiver from any location within a vehicle.

The small RF unit can be mounted in a convenient location, like under a seat of a vehicle or in the trunk. The flying lead connector enables transceivers to be mounted in extremely tight spaces to provide easy installation, access and serviceability when compared to other transceivers.

Extensive Built-In-Test Equipment (BITE) capability makes it easy for users or network administrators to test and report on their transceiver’s performance.

Easily replaceable modules ensure easy, fast and cost-effective maintenance.

The NGT SRx makes it easy to upgrade to future technology. Updated software can be downloaded from a computer via a programming port on the handset, without taking the transceiver out of service.

NGT SRx Kits/Accessories/Options


The NGT SRx can be easily configured using the following kits:

  • Mobile kit for use in vehicles—includes mobile automatic tuning whip antenna, mounting cradles and brackets, and vehicle installation hardware
  • Base Station kit for use as a base radio— includes mains transceiver power supply and a choice of base station antennas


  • GPS receiver with NMEA0183
  • 19" rack mounting unit
  • HF data modem
  • Telephone interconnect
  • GPS tracking software
  • Morse key
  • Mobile suppression kit


  • Fan for 100% continuous duty cycle used with data transmission
  • 500 Hz filter for CW and AFSK modes
  • FED-STD-1045 ALE
  • Voice encryption

Technical specifications


Frequency range

Transmit: 1.6 to 30 MHz
Receive: 0.25 to 30 MHz

Channel capacity 400 channels (single or two-frequency simplex channels)
Frequency generation All frequencies generated by synthesiser and DDS with 10 Hz resolution
Operating modes Single sideband (J3E) USB, LSB, switched USB/LSB,
(AM:H3E), J2A (CW), J2B (AFSK)
Frequency stability ±0.3 ppm (–30°C to +60°C)
Programming Frequencies and options are programmed via the
handset RS232 socket using NSP software and a PC

Channels may be entered from the handset by qualified
personnel or (where authorised) by the operator
RF input/output
50 Ω
Supply voltage 13.6 DC nominal, negative earth

Nominal operating range: 10.8 to 15 V
Functional range (no spec): 9 to 16 V
Reverse polarity protected
Overvoltage protection Shutdown at 16 V DC nominal for duration of overvoltage up to 60 V
Display Graphic LCD with 3 levels of backlighting and auto-dim
Selcall system 4 and 6 digit protocol based on CCIR 493, including UN,
Codan and other manufacturer’s systems
ALE system Compliant with FED-STD-1045 and interoperable with MIL-STD-188-141B
Scan types Selcall, ALE and voice (syllabic)
Scan tables and channels 10 tables with up to 100 channels per table
Up to 100 channels can be scanned at the same time
Scan rate Fixed or variable from 250 ms to 9.9 sec
Supply current  
Transmit Two-tone: 14 A typical
Average speech: 8 A
Receive 650mA
Computer interface RS232, 300 to 38400 baud
GPS interface NMEA-0183 (4800 baud, RS232)



0.12 µV, –125 dBm For 10 dB SINAD


Greater than 70 dB at –1 kHz and +4 kHz reference SCF USB

Image rejection

Better than 70 dB

Spurious responses

Better than 90 dB

Intermodulation The unwanted signal must have a level
greater than 92 dB above the wanted signal
Audio response –6 dB 350 to 2850 Hz
Audio power and distortion 4W into 4 Ω, 5% THD


Power output

125W PEP ±1 dB

Duty cycle

100% for all modes with Option F

Spurious and
harmonic emissions

Better than 65 dB below PEP

Carrier suppression Better than 60 dB below PEP
Unwanted sideband 70 dB below PEP
(Two-tone test)
33 dB below PEP



Ambient temperature: –30 to +60°C
Relative humidity: 95% non-condensing


2012 RF Unit: 210mm W x 270mm D x 65 mm H
2020 handset: 65 mm W x 35 mm D x 130 mm H
Handset and speaker connector: 35 mm W x 60 mm D x 22 mm H


2012 RF Unit: 3.3 kg
2020 handset: 0.3 kg



Exceeds or meets requirements of:
AS/NZS 4770:2000
AS/NZS 4582:1999


Dust: method 510.4
Shock: method 514.5
Vibration: method 516.5

HF Transceiver Codan NGT SRx Selcall Remote Diagnostic