Chapter 7: PTP 820C HP Detailed Configurations Description
4+0 Dual Polarization, Remote Mount
Page 7-65
Note
Tighten the screws diagonally. First begin to fasten the upper right screw of the top Diplexer
and then the lower left screw of the bottom Diplexer, then fasten the upper left screw of the
top Diplexer and then the lower right screw of the bottom Diplexer. Once the outer screws
have all been partially tightened, repeat this process in a similar fashion with the central
screws. Then proceed to fully tighten all the screws in the same order.
Important: Verify that the O-rings on the Dual Circulator/Splitter are properly mounted between the
Dual Coupler ports and the Diplexer unit.
5.
Secure the edges of the Diplexer unit to the Dual Circulator/Splitter using the four M8 captive
screws and washers supplied with the Diplexer kit, using 20Nm torque. These screws are colored
blue in the following picture. Be sure to tighten the screws in the same diagonal manner as in the
previous step.
4 M8 Screws
6.
Attach the Radio unit to the Diplexer unit using the 8 M5 captive screws supplied with the Radio
kit. Position the Radio unit on the Diplexer unit so that the two location pins mounted on the TRX
ports of the Diplexer unit fit into the corresponding holes in the Radio unit. Perform the fastening
in diagonal fashion as in the previous steps. The location pins are located on either the left of the
upper TRX port and the right of the lower TRX port or the right of the upper TRX port and the left
of the lower TRX port, depending on the frequency.
