I have had great results with this mini interface consisting of a Bluetooth headset connected via a set of resistances and capacitors (5 components in total) to the MIC and Speaker plugs of the FT-817. The built-in SSB VOX circuit is used to key the radio in. Of course this can be used on any radio (maybe requiring some adjustments in the values). A very portable and very low cost ($less than $15) digital interface with excellent insulation: up to 10 meters of air between the transceiver and the Android phone or tablet (or PC). Maybe a nice project for the holidays? See the attached document. Rein, can you include this document in the AndPskmail section of the web site please. Thanks and regards, John (VK2ETA)