Talking House AM Radio Transmitter No FCC license required. Ideal gift for realtors, schools, churches, hobbyists, retail. Internal audio recorder with dual messages totaling up to 5 minutes (looping). 520-1700 kHz. Range 300' with included auto-tuning indoor antenna. RG6 jack for outdoor antenna. (outdoor antenna not included). Aux port for line-level input. Internal mic for live or recorded broadcasts. i A.M. Radio option for enhanced audio quality & range (see ASIN B078J1H9JV).