Hello to the Group, I'd like to get some opinions and war stories regarding GPS reliability at high RF level and elevation locations.
Background: Three different hill-top GPS receivers, all different types, using different antennas mounted on an outside fixiture, plain view of the open sky, all stopped working. Test antennas were brought in and placed on a fixture well away from the original antennas, the recevers went back in to capture and lock. >From what I understand, the original antennas are what I would call straight preamp with no pre-selection / filtering. The ordered and now inbound replacements are said to contain a SAW filter system. It is the intent of the client to just place these "improved antennas" in to service and get on with life. I would suspect a GPS antenna (and receiver) could be subject to RF overload or blocking, however, we're assuming nothing major has changed at the site, nor any nearby location. One might think there are more GPS receivers being pushed out of reliable operation by the world around them, I'm just not hearing those stories from a lot of people using them (GPS receivers). Any new install GPS receiver antenna ordered will/should contain some pre-selection to potentially avoid a problem, even some years down the road? Seems like that's where things are going... no more off the shelf, wide band, (hot) preamplified GPS antennas in busy locations? Thank you in advance for any related comments and/or opions ... cheers, skipp skipp025 at jah who dot calm _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an email to time-nuts-le...@lists.febo.com
