If you want to go cheap, You can pick up a GWS 72 megahertz FM radio w/crystal for $35.00 from [link=http://www.horizonhobby.com]Horizon Hobby[/link]. It doesn't have any frills but it works well. I don't know if it comes with the rx crystal in addition to the tx crystal so you might want to call and check with their customer service. Here is the link to the radio [link=http://horizon.hobbyshopnow.com/products/description.asp?prod=GWST4A]http://horizon.hobbyshopnow.com/products/description.asp?prod=GWST4A [/link]