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ENABLING AUDIO
PORTABLE TRANSCEIVERS
Select the TR-300 portables that will be used
with the BTR-300. Push in the portable enable
switches that correspond to the TR-300
remotes that you will be using. The numbers
of the portable stations (1, 2, 3, and 4), are the
last digit of the product number on the back of
the TR-300. The Portable Transmit On light
will illuminate when the remote on that fre-
quency is turned on. The indicators may also
light in response to outside interference on
that channel or to intermodulation arising
from portables being used at too close a dis-
tance to the base. To prevent these sources
from creating undesirable noise, all unused
channels should be disabled.
INTERCOM SWITCH
The intercom switch in the front of the unit
will act as an enabling switch when the unit is
being used with either a Telex Audiocom
wired intercom or Clearcom wired intercom.
When using a RTS system wired intercom the
switch will act as a channel selector switch for
selecting of either channel 1 or channel 2.
AUXILIARY
The AUX Switch on the front of the BTR-300
will enable any auxiliary audio input (or 4
wire intercom) that is supplied to the unit.
Figure 33
Enable Switches
-27-
Ext Intercom Aux Audio
1
3
4
2
Portable Station Connect
Portable Transmit On