Operation Manual

Axnes AS
Document number
Revision
Date
AX-PNG-UMAN-2017
Issue C
2020-Jul-09
Page 1-6
Through the handheld internal microphone, the system enables communication with the
survivor/ground rescue party without helmet removal.
Depending on the configuration and part number, the handhelds are equipped with a GPS
receiver. The position of the handheld device may be polled by the PNG Base Station and
presented on the PNG Control Panel in the aircraft.
The PNG Base Station is typically connected to the aircraft ICS and may support multiple
connection points for audio and can deliver a PTT signal to other systems.
1.1 Radio
The PNG system operates a wireless link between the PNG Base Station and the handheld
radios in the UHF band. Exact frequency configuration is done at production, based on
customer input to available frequencies and bandwidth in the region they are to be operated
in. The PNG system will normally be configured within a 10 MHz band in the frequency range
397 to 470 MHz The PNG Base Station will support the full 397 to 470 MHz range
(depending on the antenna installation in the aircraft), while the handhelds support 10 MHz
bands through the 397 to 470 MHz band, depending on the installed antenna. Antennas are
available through the band.
The wireless link is a single frequency, duplex, interception free, digital radio link.
The handheld radios will operate at an output power of up to 400mW using a license specific
frequency allocation.
The PNG system will not set any limit to the number of simultaneous receivers, but the
number of simultaneous transmitters is limited by the available bandwidth and allocated
timeslots. The PNG system allows up to three simultaneous transmitting handhelds.
The handheld radios support Maritime VHF mode, and channels can be configured in the
156-162MHz band.
1.2 BST3x
The PNG BST30 (non battery operated) and BST35 (battery operated) base stations are
intended for carry on or ground support equipment and as such carrying limited aircraft
qualifications. The system can be connected to the aircraft or vehicle through preinstalled
provisions or through existing headset in/outs.
The BST30/35 PNG Base station is compatible with all existing PNG handsets such as MP30
and MP50 (requires rel 2.13 or newer handset software). The BST30/35 is a portable version
of the PNG BST50 with a reduced set of interfaces and functionality. The BST 30/35
supports the following interfaces:
• 28VDC power in (designed MIL-STD-1275 compliant)
• 2xIntercom connection supporting Hi and low impedance systems
• 1xPTT out to intercom
• RS232/NMEA position data reported from connected PNG handsets
• 1xheadset connection
• 12VDC power out
• CAN bus interface (legacy)