Graupner Gr-12 Sh+ 6 Channel Receiver HOPPING TELEMETRY TRANSMISSION 2.4 GHz technology with two-way telemetry, updatable firmware? The newest features always! Servo connections top of the board, All servo connectors use space saving SH-style connectors; analog/digital slow flyer servo compatible The receiver supports generation of SUMO/SUMI/SUMD signal output on Ch. 6 for the convenient use of gyros and control boards Programmable fresh rate of 10 and 20ms?20 mms recommended for analog servos to avoid servo ?growl? Small form factor with a 1.0,antenna is ideal for small models and for use as a satellite receiver to reduce servo wiring runs