is it posibble to make radio transmitter with an ardoino board not using a Transmitter module
is it posibble to make radio transmitter with an ardoino board not using a Transmitter module
Well that's an interesting question. Let me think about that....
What does this mean ?
not using a Transmitter module
It sounds like it means "Is it possible to transmit radio signals without a radio transmitter ? (doesn't it ?)
Is it possible to drive a car without a steering wheel or engine ?
LUCY ! you got sum splainin' to do !
I think it should be 'splainin'
...R
Your arduino and most other electronic equipment transmits electromagnetic signals but maybe not of much use to you unless your a spy. 
There is this fun little project, where a naked ATtiny45 plays tunes in the FM radio band: [Sprite_tm]’s Three-component FM Transmitter | Hackaday