Register your RPS with GameCallSwap.com and receive a coupon code for of Cass Creek or Extreme Dimension or EDWC calls. Use the credits to purchase sounds to add to your sound library and play on your new RPS game caller. Please fill in the form below and click on the Register button. You will get an email with the coupon code to use upon checkout. Your Serial number can be found on your RPS caller. Turn on the transmitter: (Press MENU select INFORMATION and ABOUT to see Serial Number/Owner Code). Enter this number in the Serial No box below. DO NOT type "RPS" - the correct code are the nine numbers and letters that follow "RPS"