-You will need an 2.4 GHz antenna with a little bit of cable length and a U.FL IPX connector on the end. These can be found on E-Bay. I purchased mine there from a seller named chinarf. This antenna cable has more than enough length. -You will also need a flat washer. This is not a requirement, but it does make the antenna more secure.

-The washer needs to be very thin, and has to fit over the antenna, with a very small amount of play.

-You will need approximately a 1/2" piece of this tubing to install the antenna in a 9C. You can also use it when doing the 8U to help make the fit more snug.

8U
-Unscrew and remove the 72 MHz antenna.
-Make a notch in the ridge at the top of your transmitter antenna hole for the bump on the side of the antenna to ride in.
-This notch will allow the antenna to move 90 degrees.
-Make one end of the notch stop the antenna when it is pointed directly up (or down, your choice).

8U -Make the other end of the notch stop the antenna when it is laying flat.

8U -This shows the two stops. You'll have to play with the stops a bit to get it just right.

8U -Install the antenna in the hole and put the flat washer over the end of the antenna. This is a bit tricky to do. I smoothed the inside edges of the washer to make it go on easier. Make sure you do not damage the antenna wire.

9C -This is the notch in the top of the 9C. Notice the tubing is also notched.

9C -You will have to cut a piece of the tubing to the correct length and glue it in using CA glue. Smooth the edges of the end of the tube so it does not wear the antenna. Do not glue the tubing in untill you have the length correct. Do not glue the tubing in with the antenna installed, install the antenna after the glue is fully cured.
-I did not use a washer on the end of the antenna in this situation.

-Disassemble your TM-8 or DM-8 Module. First we will do a DM-8 module. I will talk about the TM-8 a little later.

-Disconnect the U.FL connector from the board on the DM-8 or TM-8.

-Use a small screwdriver to gently pry it up.

DM-8 -Drill a hole just large enough for the U.FL connector to pass through.

DM-8 -Place the drilled module in the transmitter (either one) and mark the the transmitter case for its hole.

8U -Drill the hole in the transmitter case.

8U -Temporarily put the case back together and mark the circuit board. Remove the back cover and drill the hole in the circuit board.
-Take a larger drill bit and chamfer the edges of the drilled hole to remove the sharp edges.

9C -When drilling the hole in the 9C case, make it a bit larger so you can offset the hole in the circuit board (next picture).

9C -When drilling the hole if the circuit board, do not disturb the copper circuit traces on this side of the board.
-Take a larger drill bit and chamfer the edges of the drilled hole.

-Feed the antenna wire through the hole in the circuit board, and the hole in the transmitter case.
-Then feed the wire through the DM-8 module case.

-Connect the antenna wire to the U.FL connector. Be very careful here. Make sure the connectors are mated correctly.

-Cover the hole in the DM-8 module. I used this sticker I had.

-Reassemble the DM-8 module.
-Slide the excess antenna wire into the transmitter making sure it is not going into the gimbals.
-Install the DM-8 module.
-Carefully test the gimbal movements to make sure the antenna wire is not near them.

TM-8 -The TM-8 modification requires a slightly different approach.
-The TM-8 module has a case that is not really suited for this modification and I did not want to cut it up so I removed the electronics from the case. Be careful not to damage the U.FL connector when disconnecting the antenna.
-I found an old synthesized RF module case and modified it to fit the TM-8 Module electronics. I imagine a normal RF module case could be used as well.
-I had to slightly notch the corners of the lower circuit card to accommodate the case screws.

TM-8 -I cut holes in the top of the case for the switches.
-I printed a label and attached it with clear tape.

TM-8 -You will need cut a notch in the white connector end of the module cover for the antenna wire to pass through without being pinched. The wire will be right beside the white connector when the cover is installed. Be sure of the location before you cut the notch.

TM-8 -After you have cut the notch in the module cover, transfer the location of that notch to the transmitter cover.

TM-8 -Cut a slot, twice as wide as the antenna wire, in the transmitter case as shown here. Make sure the slot goes from the top to the bottom.

TM-8 -Feed the antenna wire through the slot and connect it to the U.FL connector. Be very careful here. Make sure the connectors are mated correctly.
-With the lower half of the module, do a test fit, to make sure the antenna wire is not going to be pinched or rubbed when the module is installed.

TM-8 -Assemble the module and slide the excess antenna wire into the transmitter making sure it is not going into the gimbals.
-Install the TM-8 module.
-Carefully test the gimbal movements to make sure the antenna wire is not near them.

Corona V1 -The Module.

Corona V1 -Diassassemble the module.

Corona V1 -Disconnect the antenna and remove the circuit board.

Corona V1 -Make a notch for the antenna cable.

Corona V1 -This image shows the routing of the antenna cable. I assume a hole was drilled for the antenna cable to pass throught the same as the other two modules above.