so do we have any electronics/radio experts?
 

i am looking at making a BPSK demodulator does anyone know where there is a good circuit as an example or who is prepared to talk me through how it is done?

the base frequency i will be useing is 5MHz

Use a NE555 timer?

Try this link

BPSK Modulator

Or this

Improved BPSK demodulator

and i take it this will work with 5MHz?

Says it will work up to 20Mhz

Is this so that you can encode and decode messages to your girlfriend and so as to be virtually together when you are apart? :D