Thanks a bunch everyone! To reply to jeffhs question, the set is receiving a wired signal from a BT modulator. I can get all the stations provided by my cable company. The modulator is hooked up to my cable box. To be honest, my CTC-5 is producing a better picture than my CTC-7!
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)