Specifications

TUNING INSTRUCTIONS
1. Turn off the DRC-200 with the front panel
POWER ON/OFF switch and unplug AC power
cord
2. Remove the eight (8) black Phillips head screws
that fasten the cover wrap to the chassis and slide
the cover wrap off towards the rest of the unit.
3. Connect the signal generator output through the 50
ohm pad to the ANTENNA connector on the rear
panel.
4. Disconnect the cable from the TX port on the du-
plexer and connect the communications monitor
through a 50 ohm pad to the TX port.
5. Tune the communications monitor to the receive
frequency.
6. Unloosen the tuning screw shaft locking nuts (Fig-
ure 13) on all six. (6) tuning screws.
7. Tune the signal generator to the receive frequency
and adjust for a high output.
8. Adjust the three transmitter port tuning screws for
minimum signal level on the communications
monitor. Adjustment of all three screws, one at a
time, may require that each screw be adjusted more
than once to obtain a minimum signal level indica-
tions.
Tighten the tuning screw locking nuts after final
adjustment of the transmitter port.
9. Disconnect the communications monitor and 50
ohm pad from the TX port and reconnect the cable
to the TX port that was removed in step 4.
10. Disconnect the cable from the RX port and connect
the communications monitor through the 50 ohm
pad to the RX port.
11. Tune the communications monitor to the transmit
frequency.
12. Tune the signal generator to the transmit frequency
and adjust for a high output.
13. Adjust the three receiver port tuning screws for
minimum signal level on the communications
monitor. Adjustment of all three screws, one at a
time, may require that each screw be adjusted more
than once to obtain a minimum signal level indica-
tion.
14. Tighten the tuning screw locking nuts after final
adjustment of the receiver port.
15. Disconnect the cable from the RX port and recon-
nect the cable to the RX port that was removed in
Step 10.
16. Disconnect the signal generator and 50 ohm pad
from the ANTENNA connector on back panel.
17. Slide the cover wrap back on and fasten in place
with the eight (8) screws removed in Step 2.
AE/LZB 119 1882 R1B
34