Raspberry Pi 2 to arduino RF Serial link with USB to Serial TTL Converter

Question

This is my first question here. I want to have a communication channel which will use a 433 MHz RF TX-RX pair. I want to use a Raspberry Pi 2 as a transmitter and an Arduino Mega as a receiver. Is it possible to replace the usb cable using the RF transmitter with a USB to Serial TTL Converter with the Raspberry Pi 2? The communication would be like this :

Raspberry Pi 2 --> Serial (USB) port --> USB to Serial TTL Converter --> RF Transmitter --> Air --> RF Receiver --> Arduino

Now I dont want to program the arduino wirelessly or anything but only have the Raspberry Pi send small (extremely - about 100 bytes/sec) amounts of data from a python code to the arduino wirelessly.

Answer 1

Here goes answer for you.

433Mhtz RF communication between Arduino and Raspberry Pi: Arduino as receiver.

http://www.homautomation.org/2014/03/02/433mhtz-rf-communication-between-arduino-and-raspberry-pi-arduino-as-receiver/