howell

I have a pretty complete list of 2-tone sequential pager tones, but my table of Bell & Howell tones has a few holes: BH04 BH05 BH06 BH08 BH10 BH13 BH19 For reference, this is the series with BH02 = 1220.0 Hz, BH03 = 1291.4 Hz, through BH22 = 1600.0 Hz. Can anybody fill in the...