Vincent275uk This is termed a 'Variometer', yet in the description only says it "Calculates the altitude by reading barometric pressure", and nothing about calculating 'rate of climb or descent' (ie. a 'vario' reading, say /- metres/sec) . . altitude is only of secondary interest to a sailplane, but rate of climb/descent is crucial to be able to centre on the core of a thermal, or to speed up to best escape sink . . so is this just an altimeter, or also a 'vario' ( /- metres per sec) . . ?

Vincent275uk Yes Sarconastic,it is strange that this FlySky FS-RB6 6 channel receiver is the one supplied with the FlySky FS-T6 6ch Tx/Rx combo and that is predominately it's purpose in lifet t . . yet both the heading title and the product description make no mention of this.