what does that have to do with the actual solution to the problem ?
i am just sending numbers and i want to use my SPI to RF module but cannot find a way to receive the stuff . that's it man .
No that's not it , man. You are leaving out the part about why you are sending the numbers and why 800 meters ? (reduced from the original 3 km).
It has nothing to do with the solution. It has to do with our choice of whether or not to help you. The assistance offered by The Forum is a privilege, not a right. Right now I am challenging your reason for seeking our assistance. I think it's pretty obvious why I am asking, and it is starting to become obvious why you are not answering.
WHAT ARE YOU DOING ?
WHY ARE YOU SENDING THE NUMBERS ?
And while we're on that subject why did you post this in October of 2015 ?
(in THIS post)
so all i need , is to transmit a logic or analog state over a very long distance . something around 4km to 5km . like a high state or a low state ... or a voltage value . all the possibilities use pre-defined protocols .
i want something from scratch . like it only transmits something very simple , like a voltage or a wave that i can later analyse
[u]Reply#16 of that post[/u]:
there are many buildings in the way .. and some high trees ..
the RF systems are meant to carry bytes of information . all i need is one bit .
Believe it or not, it is OUR prerogative to ask this question when we suspect our assistance is being sought to accomplish some end we do not endorse or approve of. If you want our help, answer the question or go somewhere else.
"That's it, man."