jinalkothari
New Member
I am very much a newbie to electronics, so I hope some one can help me out here. I want to design and implement a full duplex , digital walky talky. The hardest thing for me in the project is the data transfer between two devices. I wish to have a range of atleast 1-2 km, but i don't know which frequency to use or what modulation to use ( I am adamant about the data being digital and not analogue ) . I would obviously prefer an ic for the modulation. the data input to the modulator should preferably be parallel(8 bit) , but if not feasible i don't mind serial either. I am also not quite sure how do i actually put the output from the modulator 'on air' .
Oh and for now i am ignoring legal issues of restricted freq . and i am not very sure of the data rate but the minimum i need is that enough for decent voice transmision ( i hope you understand my non technical lingo)
I also think that it is not required for the ic to handle any protocols , as i have a microcontroller which would handle everything.
Oh and for now i am ignoring legal issues of restricted freq . and i am not very sure of the data rate but the minimum i need is that enough for decent voice transmision ( i hope you understand my non technical lingo)
I also think that it is not required for the ic to handle any protocols , as i have a microcontroller which would handle everything.
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