Bringing the AS3X auto-stabilisation technology to a stand-alone receiver for the first time, Spektrum's 6-channel AR635 has just been unveiled.

Fitted with 3-axis gain adjustment, it's designed for electric parkflyer machines upwards to 90-size but not i.c, petrol or turbine powered models. Spektrum also stress that it's not a flying aid for beginners.

Those who've flown RTF ultra micros fitted with the technology will know what to expect, suffice to say that the unit's purpose is to smooth out flight patterns by making tiny corrections on rudder, elevator and ailerons so helping to nullify the effects of torque, turbulence and tip stalls.

The '635 is compatible with any DSM2 or DSMX transmitter, measuring 30x21x12mm, it's some 26mm longer than an AR600, weighs 13.2g and operates with an input voltage between 3.5 and 8.5V. It'll operate with computer and non-computer radios in either 3D or Sport modes and programming is courtesy of stick movements.

Spektrum stress that the additional work done by the servos must be taken into account when considering a model for this Rx so only fast, digital servos can be used, added to which, the ESC's ability to handle higher current demands must also be considered.

With an RRP of £79.99, it'll be in the UK soon and there's further information at www.horizonhobby.co.uk