Originally Posted by TheBennyB

2.4 Ghz systems don't have crystals. And while technically yea, you can put 75Mhz crystals in a 72Mhz TX and RX and it will function, It will drastically shorten range and you'll get some pretty good glitches so it's not recommended at all. The GBS still works with the 4YF it is just very finicky to get it engaged and disengaged via TX. Another option is to look at a r/c submarine pitch gyro if you could return the GBS. You would not be able to turn it on/off via TX but it does have a pot to adjust sensitivity. So when you have the turret top off putting in a battery you can get to it to either adjust sensitivity or turn it all the way down which essentially turns it off. You could stick with the 4YF then for sure.

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