COMTEK BST-75 - Manual (Page 4)

Equipment Placement
If the BST-75 base station is to be rack mounted, a remote antenna must
be used. The base station should be mounted away from equipment
that uses large power transformers to reduce 60 Hz hum possibilities.
Special Note: When using the base station in close proximity to other
audio equipment, ensure that the audio equipment is not susceptible to
RF interference. This can be accomplished by temporarily installing
the base station as per above, and then while the base station is
operating, checking all audio outputs for uncharacteristic noise. If a
problem is found, move the base station or the remote antenna as far as
possible from the affected equipment. Should you continue to have
problems, contact COMTEK’s Technical Support Services for
assistance.
Power Requirements
The BST-75 base station is designed to be powered by 12 volts AC
through a standard barrel type power jack (5.5mm X 2.1mm). The
AC power adaptor supplied (AP-12VAC) is used for permanent
installations and mobile applications
where AC power is available.
For field operation only, the
BST-75 base station will accept
12V DC through the power jack
with either positive or negative
12V to the center pin of the jack.
The on/off switch on the front
panel of the base station
transmitter should be
turned to the “off”
position when the power
plug is initially plugged
into the transmitter.
Page 2
OPERATING INSTRUCTIONS