The next connections are to provide DC power and DC ground to the PAT board. Towards the bottom edge in the middle of the PAT board, there are two solder pads. The one closest to the bottom is for ground and the one above it is for DC power.
The technical supplement for the FTDX-1200, indicates there is an RX9 line that terminates on the main board at TP1002. A connection to TP1002 will provide 9 volts DC to the PAT board during receive. The ground wire from the PAT board can be soldered to any convenient DC ground point.
Location Area of TP1002 on the main board...
Component side board layout, showing DC positive RX9 point on the main board (TP1002). (Facing the front of the radio).
The final connections are made using the Teflon coax provided in the installation kit, between the PAT board "OUT" and the rear SMA connector. If not already done, solder the coax center conductor to the center pin of the SMA connector, and the shield to the outer body. Install the SMA connector in the rear chassis hole that should have been previously prepared. Carefully route the coax through the chassis up to the PAT board.
Leaving a generous amount of slack coax between the PAT board and the SMA connector. Cut the coax and solder the center conductor of the coax to the middle "OUT" solder pad on the PAT board, and the shield can be connected to either one of the solder pads above or below the center pad as shown below.
The PAT board installation should be complete. Double check all connections, and reassemble the radio. In regard to the SDR radio. Myself and several other hams I know, have had good experience using the RTL dongles from
Nooelec. They seem to be higher quality than the run of the mill Ebay/Amazon RTL dongles. I certainly have not experienced some of the issues and poor performance noted by others using the generic RTL 2832 devices available on Amazon and Ebay.
73 de AB4D.