This is the Receiver crystal 72MHz FM Low Band. This plugs into the receiver and receives the signal from the transmitter INCLUDES: One FM Receiver Crystal for 72MHz Dual Conversion Low band crystal. COMMENTS: Stock number for 27MHz AM is FUTL46, channels (A1-A6) Stock number for 72MHz Low Band AM is FUTL47, channels (11-35) Stock number for 72MHz High Band AM is FUTL48, channels (36-60) Stock number for 75MHz AM is FUTL49, channels (61-90) Stock number for 27MHz FM is FUTL51, channels (A1-A6) Stock number for 75MHz FM is FUTL52 (61-90) Stock number for 50MHz FM Dual Conversion is FUTL56 (00-09) Stock number for 72MHz High Band FM Dual Conversion is FUTL58 (36-60) Stock number for 75MHz Dual Conversion is FUTL59 (61-90) Stock number for 27MHz Short is FUTL61 (A1-A6) Stock number for 72MHz Low Band FM Short is FUTL62 (11-35) Stock number for 72MHz High Band FM Short is FUTL63 (36-60) Stock number for 75MHz FM Short is FUTL64 is (61-90) dew10/20/01