Power LED's using RF transmitter and receiver

Wow, I feel bad whoever works with you in industry. You sound like a pretentious asshole.

Anyways, I figured it out - I had to use

if(buf[0] == '1'){digitalWrite(3, HIGH);}

On the receiver instead of

if(buf[i] == '1'){digitalWrite(3, HIGH);}

So thanks for the GREAT constructive criticism! (That was sarcasm incase you couldn't pick up on that)