Sentry-H 6120-BM delivers 150 W of RF power without the added cost, weight and complexity typically found with a multi-role manpack radio design.

Codan’s Sentry-H 6120-BM is designed for maximum reliability and efficiency and a wide range of DC input voltages for both military vehicle and base installations. The in-built power amplifier provides full-duty cycle performance across the complete HF band for all supported modes.

The 6120-BM provides 150 W of power so that you get the best and most reliable communications, without the need for an external power amplifier. Whether you’re configuring a base or mobile system, the compact and highly integrated unit along with the robust handset makes for quick deployment.

Lower Overall Investment

The 6120-BM Software Defined Radio platform uses the latest-generation high-performance Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA) and system on chip (SoC) technology.
Built upon a proven SDR platform with thousands of hours of operation in the field, the 6120-BM delivers market-leading performance and future upgradability through software updates that support evolving standards and ensure sustainability.

Efficiency and Flexibility of Operations

Excellent RF performance and capabilities including state of the art digital voice and high speed call linking protocols means that your communications will be successful in a broader range of conditions, more often. Being a truly IP-based radio, the 6120-BM allows separation between the radio and remote Control Point(s), providing flexibility in selecting a place for antenna installation.

Security of Operations

With a range of voice and data encryption options, the security of your information on air can be guaranteed. The 6120-BM's second generation Digital Voice coupled with AES-256 encryption provide superior and secure voice quality and data, even in the most challenging channel conditions. The innovative secure interoperability capability ensures that 6120-BM systems can be configured to operate seamlessly across HF networks using disparate encryption methods, a crucial capability in complex missions. Data application suites such as Codan SprintChat and SprintNet provide peer to peer text chat, email, and file transfer as well as email and phone SMS gateways, ensuring your mission data requirements can be fully met.

Reduced operator training

With a modern, graphical full-colour user interface, USB SmartLoader, and intuitive programming, the 6120-BM is easy to operate and minimises the need for training. The User Interface supports English, Spanish, Russian, French, Arabic, Dari, Pashto, Portuguese and Polish languages for display and data entry.

Additional languages available upon request.

Codan Reliability and Support

With Codan’s highly trained, globally available service and support network you always have access to prompt and accurate assistance wherever you are located. Codan products have some of the best MTBF in the industry, resulting from over 60 years of HF design experience. This experience has led to the 6120-BM radio being built for maximum reliability in all conditions.

Frequency Hopping

The 6120-BM can be enabled with frequency hopping capability providing tactical networks with additional capability to prevent malicious jamming and signal interception. The user can select between up to 31 user programmable hop plans, each comprising a hop name, rate, bandwidth and encryption key.

Additional information security can be achieved with the use of one time session PIN’s, and also combining frequency hopping with CES-128 voice encryption.

Frequency hopping is now compatible with Digital Voice and 2G MIL/STANAG data waveforms to further extend ECCM capabilities. Available Digital Voice vocoder rates and 2G data rates are dependant on selected hopping rate, ISB data is not supported in frequency hopping mode.


The Sentry-H 6120-BM has a range of advanced capabilities, providing a truly customisable solution

150W high power

Deliver 150 W power for voice and data without the need for an external power amplifier – making installation fast and fuss free.

Software-Defined Radio

The software-defined architecture enables you to download and upgrade new capabilities through software to ensure your investment is future-proof.

Secure voice and data

When coupled with AES-256 encryption, second generation Digital Voice technology and high speed MIL/STANAG data waveforms it provides superior and secure voice quality and data throughout the most challenging channel conditions

Frequency Hopping

Frequency Hopping capability helps prevent third party monitoring of communications. Supports up to 31 user programmable hop plans and can be combined with voice encryption to provide a high level of ECCM and communications security.


Data application suites such as Codan SprintChat and SprintNet provide broadcast and peer to peer text chat, email, and file transfer as well as email and phone SMS gateways, ensuring your mission data requirements can be fully met.


3G ALE provides quick linking and secure data exchange. A fully encrypted long-range solution for tactical data communications, optimised to perform in low signal to noise environments when 2G ALE fails.

MIL spec

Designed and tested to the toughest Military standards and inherit the time proven reliability of Codan.

Smart handset control

The Sentry-H Handset provides an intuitive user interface and easy to read layout, coupled with an ability to switch between multiple native languages.

Multilingual Support

Truly customisable communications solution, with the ability to support an unlimited number of additional languages. Supports: English, Spanish, Russian, Chinese, French, Arabic, Dari, Pashto and Portuguese.


  • General
  • RF
  • Waveform
  • Electrical and Mechanical
  • Frequency range Transmit: 1.6 to 30 MHz (optional: 1.5 to 30MHz)
    Receive: 250 kHz to 30 MHz
  • Power output 150 W PEP ±1 dB (two-tone or voice), user-programmable in 1 W steps (low/medium/high)
  • Contacts Up to 500 entries
  • HF networks Up to 20 networks (simultaneous scanning)
  • Presets Up to 100 user defined presets
  • Input voltage range 13.8 V DC nominal, negative earth
    Functional range: 10.8 V to 35.2 V DC
  • Frequency stability ±0.3 ppm from – 20°C to +60°C
  • Supply current Transmit: output power 150 W, two-tone 11 A to 20 A CW or average speech 8 A for battery
    life calculations
    Receive: no signal < 0.6 A typical, 0.9 A maximum
  • GPS RFU - external antenna, 2320 Handset - embedded receiver/antenna (GPS, GLONASS and Beidou)
  • Programming TPS-M- Radio Programming Software, USB memory device
  • Language support English, Spanish, French, Arabic, Dari, Pashto, Portuguese and Polish
  • Compliance CE, FCC Part 90, AS/NZS 4770, AS/NZS 4355, IC RSS-125
  • Frequency range Transmit: 1.6 to 30 MHz
    Receive: 250 kHz to 30 MHz
  • Modes Single Sideband USB, LSB (J3E), AM (H3E), CW (J2A), AFSK (J2B), FSK (F1B), ISB (B7D or B2B), Software Defined
  • Power output 150 W RF
  • Duty cycle 100% voice and data
  • Receiver specifications
  • Sensitivity SSB: -125 dBm (0.12 uV)
  • Selectivity >65 dB at -1 kHz at -1 kHz +4 kHz SCF (USB)
  • Transmitter specifications
  • Spurious and harmonic suppression >65 dB below PEP
  • Intermodulation products >31 dB below PEP
  • Automatic Link Establishment (ALE) MIL-STD-188-141D (Appendix A, Appendix C); FED-STD-1045; JITC Certified MIL-STD-188-141B; STANAG 4538 3G ALE
  • Data MIL-STD-188-110D (Appendix C); MIL-STD-188-110A/B (STANAG 4539) data capability with data rates up to 19.2kbps
  • Selcall CCIR 493-4 proprietary and open standard
  • Digital Voice TWELP 2400 bit/s, 1200 bit/s, 600 bit/s, 480 bit/s, 300 bit/s
    MELPe (STANAG 4591) 2400 bit/s, 1200 bit/s
  • Digital Voice (open protocol) TWELP (600/700/1200/2400 bit/s)
    Note: Actual vocoder rate combinations are dependent on other
    Export/Non-export controlled capabilities that may also be enabled
  • Encryption AES-256 digital voice and data (256 keys, direct entry and programmable via Codan KMS/KFS & USB flash drive)
    CES-128 voice (97 x 16-digit keys, direct entry and programmable via Codan KMS/KFS & USB flash drive, 4-digit session PIN)
  • ECCM 6, 12, 25 hops per second (hps)
    Max Data Rate: 6hps (2400bps) 12hps (1200bps) 25hps (600bps)
    DV Vocoder Rates (TWELP only): 6hps and 12hps (1200bps, 600bps, 480bps, 300bps) 25hps (600bps, 480bps)
  • Size RFU: 220 mm x 66.5 mm x 190 mm
    Handset: 67 mm x 210 mm x 72.5 mm
  • Weight RFU: 2.82 kg
    Handset: 280 g (no cable)
  • Interfaces ATU Control, General Purpose Interface, Handset Interface, DC supply, USB (via Handset), Fan Control, H-250 Audio (powered), GPS antenna, Antenna, Ethernet via adaptor (TCP/IP, supports remote control)
  • Temperature range Operational at –30 to +60°C; 95% RH maximum, non-condensing
  • Environmental standards MIL-STD-810G Shock, Drop, Vibration, Humidity, Blowing Dust, Salt Fog, Fungus, Altitude, Immersion
    IP67 1m / 60 minutes

Values noted are typical. Equipment descriptions and specifications subject to change without notice or obligation.


Can I use IPv6 addresses in Codan Envoy and Sentry-H 6120-BM radios?

No. The Envoy only supports IPv4 addressing.

What are the default IP addresses used in the Envoy and Sentry-H 6120-BM?

There are several IPv4 addresses allocated to the Envoy transceiver.

Default IP Addresses are:

  • Desk Console:
  • Handset:
  • RF Unit:
  • Virtual Control Point:
  • USB Programming Port: (do not change).
How do I load a profile or key to my HF radio?

For 2110 Series Manpack radios, profiles are loaded using our NSP software, and a serial or USB to serial convertor cable to the transceiver. For Envoy, TPS software is used to create a profile. Profiles can then be loaded via USB cable, IP connection or via USB memory stick. Keys are loaded using either our KMS or KFS software on 2110 Series Manpack and Envoy HF transceivers. Keys can be loaded to Envoy and Sentry-H 6120-BM radios using a USB thumb drive and a USB host adaptor.

What GPS capability is available on HF products?

Our HF transceivers – 2110 Series Manpacks, Sentry-H 6120 BM and Envoy – all have support for GPS. An external GPS receiver can be connected, or some models can be fitted with an internal GPS receiver. Once your system is equipped with a GPS receiver and the appropriate calling options enabled, your Codan radio can both request and send GPS coordinates. You can also receive distance and bearings between two radios or from a portable / mobile to a base. Codan also offers tracking software, which allows map-based tracking of assets from a base station.

For the Codan HF products that support “data”, what kind of data is this? How fast is it transmitted?

Codan provides a range of data options for different applications, with capability for messaging, email and chat. The data rates are generally between 75 bps and 9,600 bps (not including data compression), depending on channel conditions and the modem option you have installed.

Codan’s robust low rate modem, available as a software option in Envoy and Sentry-H 6120-BM products provides data throughput up to 2,400 bps (uncompressed) or 6,000 bps (compressed), and is a highly cost effective option. Codan also provides full MIL-STD modem This provides data according to MIL-STD-188-110A & B, with rates up to 9,600 bps.

When used with an independent sideband capable radio, the rate can be up to 19,200 bps. All data capability will depend on channel conditions.

Codan Digital Voice

Reliable, clear communication

Channel Condition (SNR) Analog Voice Digital Voice Non Real Time Digital Voice
    2400 bps 1200 bps 600 bps 480 bps 300 bps  
Good (+16 dB)
Average (+6 dB)
Poor (0 dB)
Very Poor (-3 dB)
Extremely Poor (-4 dB)
Unusable (-6 dB)
*300/480 bps vocoder rates not available on Envoy radio
Challenging requirements?
Speak to an expert today to design your solution.