User's Manual

Table Of Contents

MX800 Transceiver General Description

Figure 1-1 Standard Front Panel

1.1.1.2 Local Control Front Panel

The Local Control Front Panel is illustrated in Figure 1-2 below. The Local Control Front Panel is illustrated in

Figure 1-2 Local Control Front Panel Figure 1-2 Local Control Front Panel

It has the same LED indicators as the standard front panel as well as the

following features

It has the same LED indicators as the standard front panel as well as the

following features

Loudspeaker and Volume Control

A 1 Watt loudspeaker is provided to monitor 'on air' received audio as well as

transmit audio from line. Volume control is provided by means of a

potentiometer or a 3-position toggle switch adjacent to the loudspeaker. This

switch is biased in the centre position. To raise or lower the volume the

switch is momentarily moved up or down respectively. For each switch

closure the volume is incremented or decremented a fixed amount. Newer

versions of the MX800 Micro Controller PCB support a conventional rotary

volume control. The newer versions are also backward compatible in that the

circuitry can still support the older up/down control method as well as the

new chassis can still accommodate the older revision board.

The speaker has a link selectable connection to a tone output from the

microcontroller. This may be used in conjunction with the appropriate

software configuration to generate an alert tone to the user.