When the GC 2.4 TX is first turned on it applies throttle, before turning on the RX and setting up the ESC move the throttle to full power and then full reverse, then centre it. Turn on the RX and set up the ESC.
The GC can be easily improved for use with boats if you are happy to lose the warranty.
1. set the four recessed front dipswitches to mode 1 ie down.
2. remove the 4 screws from the backplate, no need to remove the battery cover , or batteries.
3. Open the case and set the small Mode dipswitch on the PCB to "Mode 2" and the mixer dipswitch to "Normal"
4. The throttle channel is fitted with a ratchet, undo the small screw and remove the sprung steel arm. Put these to one side.
5. If you are happy with a throttle that does not self-centre then go to 9 below.
6 On the right hand control identify the unused channel 2 ( up and down ) and you will see a plastic arm held in place by a spring. Move the gimbal as necessary and gently slide the arm off it's pivot. Use tweezers to remove the spring.
7. The plastic arm and spring fit onto the throttle mechanism on the side opposite where the ratchet was fitted, fitting the arm and spring is the reverse of removing it and the throttle now self-centres.
8. If you wish, fit the ratchet arm onto channnel 2 by slotting it into the groove and fix it with the screw. ( Everything so far is reversible if you need to make a warranty claim )
9. This TX applies full servo movement with only 3/4 TX control movement, this can be easily corrected by simply inserting 1k 1/4 watt resistors by following this
guide, there is no need to do the Rates mod.
10. close up the case and refit the 4 screws.
These changes make the Giant Cod 2.4 a much better radio for use with boats.
