Axnes Aviation AS
Document number
Revision
Date
AX-PSB-UMAN-0027
Issue E
2015-03-05
Page 1-2
This manual describes the installation and operation of the Polycon MP20 series hand held
radio. The Polycon MP20 series hand held radio will hereafter be referred to as MP20
1.2 Mechanical description
The outline of the mechanics is found in Figure 1-1.
The chassis is made out of painted saltwater resistant milled aluminium, and consist of two
main parts, a main body and a back plate.
Helmet/headset connection is located at the top of the MP20 together with a small display,
antenna and a pressure equalizer.
The channel selection buttons, a large Push to Talk (hereafter named PTT) button used
when connected to the helmet/headset, as well as integral microphone and loudspeaker is
located at the front of the MP20. Volume up/down and walkie talkie PTT is located at the left
hand side of the MP20.
Charging connector is located in the bottom of the radio.
The mechanics are designed to withstand the robust operating environment typical
demanded by winch/SAR operation.
The MP20s are designed with all control buttons flush mounted to the cabinet, protecting
them from both damage and accidental operation, whilst the form and position of the front
PTT key enables it to be operated with a wide variety of grip positions.
The MP20 consists of the following main circuit board modules and electronic components:
Radio module
Interface processing module
Display module
Side key module
Charger connector module
Battery
