From: Jeff Behr, John Galetzka, Aris Aspiotes, Shannon Van Wyk Date: 26 Oct 1998 11:08:00 Subject: [SCIGN-0465] HOLC ****************************************************************************** SCIGN Electronic Mail Mon Oct 26 11:08:00 PST 1998 Message Number 0465 ****************************************************************************** Author: Jeff Behr, John Galetzka, Aris Aspiotes, Shannon Van Wyk Subject: HOLC The HOLC receiver is again properly logging data. The SCIGN field team replaced the antenna cable at the site on day 295. This cable showed oxidation and water damage at the connector which may have been present when the site was installed. We are unable to abso- lutely state that this is the ultimate fix for the station. Several earlier equipment changes brought the system back online but turned out to be only short-term cures. At this time, we observe no shift in apparent station position as a result of this equipment change (see http://www-socal.wr.usgs.gov/scign/Analysis/). It is susected that power to the site is unreliable. SCIGN-USGS has Holcomb Ridge #1 on the list for station upgrade once the new SCIGN radome has been received and tested. We hope this switch of radome, antenna adaptor and the introduction of solar power will take place before mid-December. We will continue to monitor the station's performance and report any further degradation in the data. Thanks. ******************************************************************* Jeff Behr, John Galetzka, Aris Aspiotes, Shannon Van Wyk SCIGN Download and Operations Center U.S. Geological Survey 525 S. Wilson Ave. Pasadena, CA 91106 ******************************************************************* [Mailed From: Jeff Behr ]