A:Answer Hi Berry. Regrettably, we are not clear on what an old antenna connection is, but the LG 24 Inch Class HD Smart TV (23.6'' Diag), Model # 24LM520S-WU has an F-Type, 75-Ohm, Coaxial Connector labeled "Antenna/Cable In" in the back which has been the connector that has been in use for a while for antenna connections...^IFV