User Manual

ANTENNA Connector

Connection of various antenna systems is covered under INSTALLATION and ANTENNAS. It is only necessary

for the operator or announcer to see that the ANTENNA connector is tight and that the antenna is clear of objects which

may affect its radiation efficiency.

CAUTION & WARNING

NEVER INSTALL AND CONNECT THE 12-15 VOLT AND THE 15-30 VOLT SUPPLIES AT THE

SAME TIME.

ALSO, NEVER CONNECT THE 15-30 VOLT SUPPLY TO THE 12-15 VOLT PINS AND NEVER

CONNECT THE 12-15 VOLT SUPPLY TO THE 15-30 VOLT PINS.

DOING SO MAY DAMAGE THE INTERNAL SWITCHING SUPPLY OR EITHER OF THE

EXTERNAL DC SUPPLIES.

ENCODE Switch

The internal subaudible encoder can be switched “ON” or “OFF” by the front panel switch. Encoding is used to

activate a repeater station, tape recorder, etc.

FREQUENCY SELECT Pushwheel Switches and EXECUTE Switch

Dial in the numbers that represent a frequency, channel number, or other command using the FREQUENCY

SELECT Pushwheel switches. Then press and release the EXECUTE switch to “send” the command numbers on the

FREQUENCY SELECT pushwheel switches to the internal controller to be decoded and executed. See the

OPERATION section for a listing and understanding of all commands.

AUDIO GAIN Controls

The GAIN potentiometer located above each input connector provides an independent level adjustment for that

input. Each GAIN potentiometer is adjusted as follows:

1. Connect input source at normal audio level.

2. Turn GAIN potentiometer to maximum counter-clockwise (“OFF”) position.

3. Place TRANSMIT/STANDBY switch in “STANDBY” position and allow METER pointer to reach 0 VU. Slowly

increase gain (clockwise) until METER begins deflecting to the left on audio peaks. Maximum deflection should be

-3 to -5 VU on the METER scale. This indicates 100% modulation of the transmitter. Excessive gain settings cause

high compression values which result in annoying increase in background noise. A 600 ohm headset may be

plugged into the MONITOR jack to aid in arriving at the proper gain adjustment. In high noise environments, close-

talk the microphone and reduce MIC gain until a maximum of -2 VU gain-reduction is indicated.

4. Once the proper gain level is determined, it will not be necessary to change it for that particular microphone or tape

player. The broadcast quality compressor/limited built into the unit will maintain modulation at the maximum level

while preventing overmodulation.

HIGH TEMP LED

When the internal controller detects a PA temperature between 65 and 90 degrees C, the HIGH TEMP LED will

flash red at a rate of once per second.