Mills@UDEL.EDU (12/24/87)
Folks, Phil Karn confirms that on at least one frequency (10 MHz) the WWV signal from Ft. Collins is currupted. As the result of careful measurements here using high-grade communications receivers and antennas, I found the same problem on 5, 10 and 15 MHz: The 100-Hz subcarrier does not disappear between bauds, but is suppressed only about ten decibels. It happens in fact that the WWVB transmission on 60 KHz modulates its carrier by 10-dB power reductions, but there is no reason that I can fathom why doing this on the HF subcarrier is anything but broken. It appears that a call to the station engineering staff is in order. Say a prayer to the God of Christmas Now and hope someone answers the phone tomorrow. I don't know if this problem has killed radio clocks other than Heath. Can somebody squawk on whether the Precision Time Standards gizmos are coping? Dave