Android emitting RF at X frequency First, nothing illegal heare. My (ours) gate remote controll have broken (all 5). The provider have gone - death, bankrupt, I don't know. The remote have no logo or some ID, but the instructions are kind to tell me that transmission frequency are 868.35 MHz +- 200 KHz. My question is if I can controll an android to emit on this freq.(I know, it may be a code emited to, but first things first...)
No, there's no way to do this unless you have some special-purpose hardware. As someone already commented, normal Android devices don't have a radio transmitter that can be made to transmit on any frequency.