As of 11/29/2011, the
RCA ANT-121 is priced at under $13 at Amazon.
Essentially the same type antenna as the ANT-111 and other similar 'rabbit ears', with the addition of a front panel adjustment knob which presumably switches element sections in or out of the circuit. While not necessarily a gimmick, the addition of this 'variable' may needlessly complicate the operation and adjustment of an antenna that could otherwise be set and then left alone.
Capable of reception of VHF and UHF signals (CH-2 through 69) when signals are strong and not subject to multipath, adjacent or co-channel interference.