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Technology in Action
As is often the case with Search & Rescue (SAR), Military Search & Rescue (MSAR) and Helicopter Emergency Medical Service (HEMS) operations, extreme conditions are rather the rule than the exception and that results in high demands of the crew and their communication equipment.

Axnes uses state of the art technology in its systems to create a capable wireless intercom system for use in this environment.

This technology page will explain more about all features implemented in the PNG system.

System Features
Robust Range 
Robust range capabilities in- and outside the cabin, for all operational requirements.
Secure Communication
Inherent secure com based on  AES 256 , FIPS 140-2  or embedded hardware encryption
Clear Communication
Full duplex, adaptive noise cancelling, echo cancelling and non-interrupted VOX
Group Support
Groups and intercom loops with simultaneous multiple group attendance on a single frequency
Remote Radio Keying
Allows access to other platform installed radios for outside crew
New Design
Intuitive and easy to operate, rugged all aluminium housing. Amphibious variants available
Connects to all major ICS brands and all standard headsets and helmets
Secure GPS position reporting of remote crew and optional AIS SART distress feature
Operational Mode
Intercom, Direct Mode and Local Mode
Class B
Certified airworthy to aviation authority requirements
Dual band
UHF and VHF frequencies available
The Polycon
The tried and tested polycon system provides a reliable wireless intercom in or outside the aircraft.
The Polycon wireless system has been developed in collaboration with UK RAF, Bristow and CHC Norway. The system provides rotary and fixed-wing operators with reliable communications and increased operational awareness by providing highly robust wireless communication between internal and external crew. Because of a very ruggedized design it is capable of doing this reliably in extremely harsh operating environments.

The Polycon system eliminates communication restrictions with outside crew. It provides seamless hands-free, continuous communications by extending the ICS to outside crew.  Communication is continuous two way communication, supported by None Interrupted VOX and effective noise cancelling. Range is sufficient to allow the aircraft to move away, burn off fuel, or act as a relay station to avoid terrain if the outside crew needs to communicate back to base.  The outside crew will stay on the ICS at all times, and is able to both continuously listen in to the communication between the rest of the crew, and to address them as within the aircraft.  Down the wire he will also act as a second set of eyes for the crew inside. He is able to warn of terrain, power lines, or other obstacles that may be out of sight or difficult to designate for the pilot or the hoist operator. Increased safety is achieved by drastically improving situational awareness, and by reliability of communications.  Also the operational window of the aircraft may in many cases be safely extended allowing better use of a valuable resource.

Axnes’ unique patented None Interrupted VOX together with noise cancelling on the microphone enables hands free communication when a remote crew member is on the hoist without saturating the ICS with outside noise. Customizable frequency and channel allocation provides support for multiple aircraft or multiple external crew members on a site.

A UHF based radio enables robust communication with a range of several km. More importantly a robust radio enables reliable communication even when a swimmer is in the water, or when a rescuer needs to enter windowed buildings or superstructures, if a rescue team is out of sight in woodlands, or if a medic is tending to casualties at a traffic accident where the helicopter is not able to set down close by.  It is in these situations Polycon has proven to be unique within the industry, and when additional lives are saved.