Top Panel Controls - E.F. Johnson Company 51 Series Preliminary Operation Manual

Project 25, conventional smartnet, smartzone fm portable radio
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On-Off
Volume
Channel
Switch
Option
Sw
On-Off/Volume - Turning the knob clockwise turns power on and sets
the volume level. Turning it counterclockwise to the detent turns power
off.
Channel Switch - This 16-position switch allows up to 16 channels to be
selected. This switch operates in conjunction with up to 16 programmable
zones to allow up to 256 channels to be selected.
Programmable Option Switch - This is a three-position selector switch
that can be system operator programmed to control some function (see
page 11).
Antenna Connector - Connection point for the antenna. Make sure that
the antenna is tight before using the radio.
Emergency Switch - If the radio is programmed for emergency transmis-
sions, pressing this switch alerts a dispatcher, for example, of an emer-
gency condition. Refer to descriptions on pages 35 and 58 for more
information.

Top Panel Controls

CONTROLS AND DISPLAY
Antenna
Connector
Emergency
(Option)
Switch
15

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Smartnet ii51 seriesSmartzone

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