Path: utzoo!mnetor!uunet!husc6!cmcl2!rutgers!ucla-cs!zen!ucbvax!UDEL.EDU!Mills
From: Mills@UDEL.EDU
Newsgroups: comp.protocols.tcp-ip
Subject: Further to the WWV problem
Message-ID: <8712232016.aa17502@Huey.UDEL.EDU>
Date: 24 Dec 87 01:16:05 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 17

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