Bob Eisner is real good with department store freqs. He compiled this list for Costco: Common frequency and tone 154.6000 PL 82.5 Other confirmed frequencies and tones: 151.6250 NONE Operations 154.5700 PL 67.0 Operations 154.5700 PL 156.7 Operations 154.6000 NONE Operations 154.6000 PL 67.0 Operations 154.6000 PL 82.5 Operations 154.6000 PL 179.9 Operations 464.5000 PL 179.9 Operations