5.5. Receiver

If you are using a gyro without remote sensitivity (like the GY240) on a fixed pitch heli, then you only need a four channel receiver (channels 1-4).

If you are using a gyro with remote sensitivity (like the GY401)on a fixed pitch heli, then you need a receiver which can receive channels 1-5.

If you are using a gyro without remote sensitivity (like the GY240) on a collective pitch heli, then you need a receiver which can receive channels 1-4 and channel 6.

If you are using a gyro with remote sensitivity (like the GY401) on a collective pitch heli, then you need a receiver which can receive channels 1-6.

(See the For Futaba transmitters/For JR transmitters section in Chapter 9, Helicopter Construction for individual channel assignments.)

For a Piccolo you can use a Piccoboard instead. The Piccoboard is a tiny board with a yaw-rate gyro and two brushed ESCs, one for the main motor and one for the tail motor.

The Piccoboard Plus is the same except it can be upgraded to heading hold with a heading hold module. I haven't tried this, but people have mentioned the GY240 works better than the HH module.

Single conversion receivers are suitable for indoor microhelis, but they are not recommended for larger (over 1kg) helis because their range is insufficient for flying outdoors safely.

An r/c helicopter is a flying rotary saw, so please use a good quality receiver so you do not lose control of the heli.

There have been many reports of some Berg 4/5/6 channel receivers manufactured after November 2004 having serious range issues. If you purchase one of these, please be sure to throughly test it before flying it in a heli.