Section 1: General information
Axnes AS has delivered the Polycon system to the rotary wing Search and Rescue segment
for decades. The system is widely adopted in this segment. The PNG system is based on the
functionality in the previous system, but enhances the functionality and performance based
on user feedback.
The PNG system incorporates the following main features:
•Wireless extension of aircraft intercom system with significant range and robustness.
•Full duplex operation.
•Uninterrupted communication.
•Support for keying of aircraft installed radios from the handheld.
•Support for multiple communication groups.
•Support for Bluetooth communication via mobile phone.
•Automatic microphone recognition on handhelds.
•Integrated Microphone for Patient/Casualty communication in the handheld.
•Active noise reduction on microphone inputs giving excellent audio quality and VOX
performance in high/extreme noise environments.
•Adaptive NIVOX (Axnes patented VOX), monitoring ambient noise environment and
minimising the effect of false triggers, and consequently noise flooding of intercom.
•GPS homing of handheld radios in the aircraft, on control panel and possible
integration with map systems.
•Support for mute and broadcast from aircraft side.
•Intercom operation in UHF band 397-470MHz.
•Flexible intercom interface, supporting high and low impedance systems.
•All components available in NVG friendly versions.
System
The PNG system enables wireless communication inside and outside the aircraft. The
system is very capable due to its robustness, range and noise reduction capabilities, as well
as interception free communication between the entire crew.
The PNG system consists of one PNG Base Station and one or more handheld rechargeable
radios (MP30), chargers for the handhelds, as well as an optional PNG Control Panel
connected to the Base Station. The PNG Base Station and Control Panel are installed in the
aircraft and supplied with power from the aircraft system.
The MP30 implements functionality to suppress surrounding noise, and to secure optimal
voice activation performance. It implements functionality to connect to the PNG Base Station
in the helicopter (intercom mode), or handheld to other radios (direct mode).
Through the internal microphone in the MP30, it is possible to communicate with the
survivor/ground rescue party without helmet removal.
Depending on the configuration and part number, the MP30 is equipped with a GPS receiver.
The position of the MP30 may be polled by the PNG Base Station, and presented on the
