Use simple parts like these with the VirtualWilre library.
Use the analogRead to read the pot value, send the data over as 2 bytes.
http://www.robotshop.com/433mhz-high-sensitivity-transmitter-receiver-pair-rxa30.html
Sending:
potValue = analogRead (A0);
msg[1]=highByte (potValue); // split the readug into 2 bytes
msg[2] = lowBYte (potValue);
vw_send((uint8_t *)msg, strlen(msg)); // send the msg[array] out
vw_wait_tx(); // Wait until the whole message is gone
After receiving, put the 2 bytes back together into an int:
potValueRx = (upperbyteRx<<8) + lowerbyteRx;
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