The Futaba T4VF is a 4 channel transmitter. The best setup is to use your transmitter with the 4 channels plus keyboard support to emulate all functions of the FS One TacCon controller. When taking this approach, the built in "Software Radio" will provide dual rates, expos and mixing. This approach is described.

Since you are not using the actual TacCon controller, go to Options and turn off "Auto-Load Radio/Controller". When this is done, FS One will not automatically pick the FS One TacCon controller when an aircraft is selected.

Select an airplane to fly, e.g. the Alpha 40.

On this same page, click the "Select Interface" button next to the transmitter icon. Pick the "Hangar9 FS One v1".

Select the transmitter by clicking on the transmitter in the FS One window. In the Transmitter Selection window, go to the categories and pick the "JR 4-Ch Emu + FS One" group. Click on the Alpha 40 transmitter in this group. Click on "Copy" to make a copy of the transmitter. Give it a name, for example: "MyFutaba-4Ch-Alpha40". The new transmitter will be put into the first category in the transmitter list (i.e. "FS One" transmitters).

Calibrate your setup. Center the trims on your real transmitter. Click on "Calibrate" and move the right stick up and down. Then move the right stick left and right. Then move the left stick up and down, and left and right. Center both sticks. Then click "Next" repeatedly until the end and click "Finish". During calibration the first four sliders will move with stick motion. After calibration the top four sliders will move with the stick motion.

Now click "Edit" to reassign the channels. Reassigning the channels is necessary because the JR and Futaba channel order is different on the real transmitters.

The Edit Transmitter window will appear as shown below.

Move the transmitter sticks to observe that the aileron stick (right stick right/left) corresponds to Axis 4, the elevator stick (right stick up/down) corresponds to Axis 7, the rudder stick (left stick right/left) to Axis 5, and throttle stick (left stick up/down) to Axis 6.

Starting with the first line, in the Edit Transmitter window, the blue column indicates that this is the Throttle channel. Click on the source input (purple) and set the axis to the Futaba throttle stick, which is Axis 6. Click on the window slider at the bottom and now when moving the throttle stick, the throttle servo moves in the window.

For the next line with the rudder servo, set the input to be Axis 5.

For the next line with the elevator servo, set the input to be Axis 7.

For the next line with the right aileron servo, set the input to be Axis 4.

For the next line with the left aileron servo, set the input to be Axis 4.

Now at the top, click on blue "Show A/C" button. This will display the Alpha 40 airplane. Click on the window to move it to a convenient location. Seeing the airplane can be used to help assign the axes (in this example this reassignment was already done in the previous steps).

Click on the image below to see the new axes assignments and airplane.

Move the elevator stick. If the elevator moves in the wrong direction, reverse the channel by clicking on the "Rev/Norm" button in the Reverse column (purple column, button on right).

Move the rudder stick. If the rudder moves in the wrong direction, reverse the channel by clicking on the "Rev/Norm" button in the Reverse column (purple column, button on right).

Move the throttle stick. If the propeller slows as the throttle stick is moved up, reverse the channel by clicking on the "Rev/Norm" button in the Reverse column (purple column, button on right). Pressing the "k" key will kill the engine when the throttle is in the idle position. If the engine can be killed when the throttle stick is pushed all the way up, then reverse the channel.

Move the aileron stick. If the right or left aileron moves in the wrong direction, reverse the channel by clicking on the "Rev/Norm" button in the Reverse column (purple column, button on right).

Now test all 4 channels (move the right/left sticks) to observe the proper function on the airplane. Use the slider on the window to view the Alpha 40 servos as the sticks are moved. The servos are on the far right side of the slider window.

Note that the Alpha 40 "software radio" (transmitter) in this example uses dual rates. With a 4-channel transmitter, these dual rates cannot be activated by the transmitter. Instead, the keyboard is used to control the dual rates using flight modes. Press the "1" key for low rates. Press the "2" key for high rates. In the high rate Flight Mode the control surface deflections are increased for more control authority when in flight. The Flight Mode is indicated in the "Current Flight Mode" box in the Edit Transmitter window.

More details about this particular transmitter setup can be found by clicking on the "Flight Manual" button in the fly page. Then click on the 4-ch Emu setup.

The boxes at the bottoms of the columns can be clicked to expand and collapse each colored group transmitter information.

This completes the reassignments of the axes for a 4-channel Futaba radio for use with the Alpha 40.

Close the aircraft window.

Click OK in the Edit Transmitter window.

Until a patch is completed in a week, after reassigning new axes, exit FS One completely and restart FS One.

Now on the fly page, click "Fly" to begin flying with the new transmitter. Be sure that the proper transmitter is selected. In this example it was named "MyFutaba-4Ch-Alpha40", and it will appear in the first group of transmitters named "FS One".

Although this outline was long, the operation is relatively quick. Decide which "Software Radio" is appropriate for your real transmitter (4 channel, pick the 4-ch Emu; 6-ch, pick the 6-ch Emu; 8-ch, pick the 8-ch Emu). Select the transmitter for the aircraft that you want to fly. Make a copy. Calibrate the transmitter. Edit the transmitter to reassign the axes as needed. Show the airplane to check the proper function of the controls. Exit the Tx Edit window, and fly. Read the Flight Manual for the airplane/Tx combination to see what functions are controlled by the keyboard. With more channels on the real transmitter, fewer functions are displaced to the keyboard. Your new Tx will be put in the top category in the Tx list.