20.2 Connect a powermeter and dummyload directly to the "Ant"-port. You could use a diode / feedtrough-C in a plug on a T-piece, with a DC-meter as a power-indicator. The dummyload must handle full power. (4W for a 10W transmitter).
20.3 Connect a VSWR meter DIRECTLY to the RX-port. The VSWR-meter must be designed for measuring low powerlevels (max 10W).
20.3.1 Connect a transmitter to the VSWR-meter. The transmitter should be best of the synthesizer-type, have tuningsteps of 2.5 kHz and an output power of several watts, and must be able to withstand bad VSWR.
20.4 Adjust the transmitter exactly to the uplink-frequency (Rx-frequency of the repeater).
20.5 Tune the "Rx"-finetune-bolts to begin, for about maximum output, at the same time observing the VSWR. Begin at the "Ant"-side and work backwards to the "Rx"-side of the filter.
20.6 Then finish and FINE-TUNE FOR MINIMUM =VSWR=, at the same time observing the output.
Begin at the "Rx"-side, working towards the "Ant"-side of the filter.
20.7 Repeat the finetuning to MINIMUM VSRW.
20.8 VSWR should be lower then 1:1.5 (1:1.2), and insertion loss should be abt. 4 dB.