Six Channel RC Radios

if you are getting into a hobby grade heli with collective pitch and have anything but the most basic gyro, you will need a six channel helicopter radio to select different gyro gain settings or to select between yaw rate gyro mode or heading hold gyro mode.

For most people, a 2.4GHz spread spectrum computerized 6 channel RC helicopter radio such as Spektrum's DX6i or Futaba's 6EX will be more than adequate for most types of flying.