Hi all,

Do you know the information about high (maybe very high) frequency
transmitter and receiver and how to build it ?

I have an idea to build communication device which can communicate each
other in the different floor in same building. (For example: the
transmitter in 32nd Floor and the receiver in Basement floor). The
controller is using PIC and need small size (not too big) and as cheap
as possible.

Any information, will be help full. Thanks a lot.

Regards,
Harry Febianto