COMTEK BST-50b - Manual (Page 10)

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BST-50b REAR PANEL
LOCK OUT SWITCH: Disables the front panel “TUNING” switch,
locking the transmitter on one frequency.
DC INPUT JACK: Requires 12 VDC at 500 mA source (Pin-1 ground,
pin-4 +12 volts).
EXTERNAL ANTENNA JACK: BNC connector provides a standard 50
ohm RF output for use with an external antenna.
SPEECH ENHANCEMENT SWITCH: Enables and disables speech
enhance feature. Enable this function (switch up) for speech, and disable
it (switch down) for music.
LEVEL CONTROL: This control should be adjusted so that normal
audio deflects the VU Meter to midscale.
BALANCED AUDIO INPUT: Accepts audio from a PA system or dynamic
microphone (Pin-1: ground).
MIC/LINE SWITCH: Selects the desired audio input sensitivity.
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