Marti Electronics SR–20M Manual page 19

Actual bandwidth may require an additional 10% to 15% to allow for the modulation on the subcarrier itself.
With severe STL channel crowding with resulting interference prevalent around large markets, subcarriers
above 110 KHz are not recommended.
5. For subcarrier operation, connect a Remote Control or Subcarrier Demodulator to the SU1 OUT J1 or SUB2
OUT J3 BNC connectors on the rear–panel. The subcarrier: 1) impedance may be 600 to 10 K ohms and 2) the
output level is approximately 0.5 Volts peak–to–peak. Subcarrier frequencies may be between 85 kHz and 110
kHz.
IF DC OPERATION IS REQUIRED, DO NOT APPLY MORE THAN +14V
6. Ensure the receiver rear–panel ON/OFF switch is OFF. Connect the rear–panel AC line receptacle to an 85 to
264V, 47 to 63 Hz AC power source. USE ONLY A 3–PRONG GROUNDED OUTLET RECEPTACLE
FOR SAFETY. The unit can also be operated from a +10V to +14V external dc supply. If dc operation is
required, refer to Figure 2 and connect: 1) the positive wire to J2–13 and 2) ground to J2–14.
7. The receiver is equipped with a rear–panel ground terminal. Connect a ground wire between earth ground and
the GND terminal on the receiver rear panel.
CAUTION
TO THE UNIT.
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