Before building your RC plane, or Heli or Multicopter, the RC Transmitter would probably be the first few things you need to look at. It's a common question for RC beginners how to choose a decent RC transmitter. In this article I will discuss the basics of a RC transmitter and what you should buy.

Unlike other parts there isn't much room for you to DIY, so it's common that we would just buy a commercially available transmitter. There are a few things about functionality you should know before discussing the price.

Channels

You might have already heard the term Channel when talking about RC transmitters. Each channel allows one individual thing on the aircraft to be controlled. For example, one channel for throttle, one channel for turning right and left, one channel for pitching forward and backward, one for rolling left and right. Four channels is a minimum for a quadcopter (pitch, roll, throttle, yaw).

RC-transmitter-channels

With more channels than just four, you can even have switch, or potentiometers to change settings on the quadcopter while flying. Some fly controllers (e.g. Multiwii, Arducopter) recommend using transmitters that has at least 5 channels, the extra channel is to switch between different flying modes.

Modes

There are 2 different Modes – mode one and mode two. It's basically different control configuration.

The mode one configuration has the elevator control on the left joystick and the throttle on the right one.

The mode two is the most common for quadcopter because the stick represents the movement of your quadcopter. It has the elevator control on the right joystick and the motor throttle on the left one. The right joystick self centres in the both axis, whereas the left joystick only self centres in left/right axis and "clicks" in the up/down axis in order to allow the throttle setting.

RC Transmitter and Receiver Paring

A receiver usually comes with the transmitter when you buy it. But be aware that some types of transmitter are only compatible to their own receivers (same brand same model). That means when the receiver is broken you will have to get the same one. There are a few exceptions that they can be paired with other receivers (i think universal is the word?). Make sure you check and ask the shop before buying.

What RC transmitter should I get?

The price range is huge, from as cheap as $20 to over $1000. Of course the cheaper, the lower quality it would be, and the fewer channels you are going to get. It would be a good idea to get a cheap 5 or 6 channel one to get a taste of flying a plane, and later on upgrade to a better transmitter when you know more about the subject. It's always a good idea to have backup transmitters anyway. However if you are serious about quad copters and someday want to get one with GPS navigation, gimbal control etc, it's better to get 8 or more channels.

The transmitter is potentially a long term investment. If you are not sure about whether you will be staying in this hobby, you would be safe to get something like a cheap 6 channel. But if you are sure you will stay in the next couple of years you will not regret to get a 8 channel or more! Moreover It's not just a matter of number of channels. Some RC transmitters support programming and firmware flashing to enhance functionality as well. So do your research before spending good money on it.
Recommendation on 8 Channel RC Controller

If you ask me that, my current favorite is the Turnigy 9X! . It's cheap and allows many DIY modifications.


(This is adapted from OscarLiang's Blog)
http://blog.oscarliang.net/choose-rc-transmitter-quadcopter/   (Original Blog)

Good to see credit being afforded to the original author.
Something i've been advocating on this forum for a while.

Even better than this would be to give a short introduction, and post a link to the original, instead of copy/pasting the material. That way we only cite the source and the original site gets the hits.

@sooraj.palakkad
Sir,
Hope you see this as constructive feedback and not as criticism.
BTW, my initials are actually P.S.
Guess where the P comes from!
Regards.

@KK Iyer, Great Suggestions Sir. Will Modify My Post.
I am new to this forum, (In fact New to a forum ! ) So any suggestions and advices or anything will be welcome.  Thanks.