MTR3000 Radio Frequency Distribution System (RFDS) Equipment: Field Tuning Procedures 9-23
iv. Tune at screw 2 until the return loss curve dips in alignment with the passband similar to
that shown in Figure 9-15. This completes the Rough Tuning procedure.
Figure 9-15 Passband tuned to required range (tuning screw 2)
v. Tighten the three tuning nuts to approximately 1.0 Nm (10 in-lbs), until the tuning screws
are not loose but still can be adjusted.