may only be applied in the area (3) beyond the "O" ring on the antenna pin to optimally fill the smallgap (max. 0.1 mm) between the pin and the bushing to prevent leakage of moisture and water into theunit. Installation should be carried out according to the antenna installation instructions.Fig. 4.6: Silicone greaseA tub of grease is supplied with each RAy unit.ImportantLubrication is a very important assembly step for everyRAy unit. Failure to lubricate the unit can lead to operation-al and assembly complications.4.3.2. RAy unit mounting to the antennaEach antenna allows RAy unit to be mounted on it with different polarization:• horizontal TX polarization• vertical TX polarizationFig. 4.7: Horizontal and vertical TX polarization – see the arrow signIn all cases mount the unit with the connectors facing downwards at an angle.NoteRAy3 links need one unit to be installed with vertical polarization and the other unit withhorizontal polarization because these units use cross polarization.RAy3 Microwave Link – © RACOM s.r.o.58Installation
