User's Manual

1-4
1.3.1.1 Conference Audio (Optional)
NOTE: This feature is only provided upon special order. The component (R7)
discussed below is left unpopulated on standard configuration radios.
Conference Audio provides the operator with Tx voice on the transceiver speaker when
the transmitter is remotely keyed from another location. The audio level of the
transmit audio is internally adjustable from 0.0W to 0.5W of audio output. The
adjustment is performed via rotation of the potentiometer R7 (see Figure 2-5 for
location), which is accessible from the top of the transceiver after removing the top
dust cover of the unit.
NOTE: The transmit audio level can be increased by rotating potentiometer R7
clockwise and decreased by counterclockwise rotation. If further adjustment of
conference audio is required, the top cover of the transceiver module must be removed
to gain access to potentiometer R63, located on the Audio Interface Module, A3 (see
Figure 2-5 for location).
1.3.2 AC and DC Operation
The unit can be operated by external 120/240 VAC or external 48 VDC & 12 VDC. The AC
power supply will automatically set for operation on 120 VAC or 240 VAC as required.
1. AC OPERATION - During AC operation, the unit can charge and trickle charge external
batteries via the external connectors mounted on the rear panel of the unit. Refer to
section 3 for remote connector pin details regarding DC operation.
2. DC OPERATION - The unit can be operated from an external DC supply which provides
48VDC(nominal) and 12VDC(nominal).
1.4 TECHNICAL SUMMARY
A summary of electrical, operational, mechanical and physical characteristics of the Single
Channel Transceiver are provided in Table 1-2.