Range I am getting is almost 800m ~ 1000m only with FS-TH9X and FS-R9B receiver.
Can any one suggest simple plug n play method to increase range to 2000m ~ 3000m?

I read some where that Long range antenna / module will work.....is it so?


Thanks.

Yup. Use frsky djt module and receiver with stock antenna that comes with djt module has range upto 2.5 to 3.0 km, with new antenna on of high dB  on fkt you will get more extended range. But 3km is more than enough for regular flying.

generally one should not need more range for all park flyers. line of sight range should be enough. experienced forum members can suggest more on this.

Apologies, range is 1000 ft and not in meters.
So, it is around 300m

Did you mean this one?
Is this just like existing module in TH9X, I need to replace by plugging in this one. Then bind / connect RX?
Pins and size is compatible with TH9X?

Yup sure I'm using two with different tx one flysky and other turnigy

Do I have to go for receiver also or R9B of Flysky can bind with frsky djt module and give same result?

Frsky djt module will not bind with flysky receiver in any case. Buy djt module and djt receiver together.