The answer is positive because there is a delay between the antenna and the receiver.

Think about it like this: The antenna receives the time data x nanoseconds before the receiver.  Therefore, the receiver is behind the antenna by x nanoseconds.  By entering a positive delay, the clock will be advanced x nanoseconds to compensate.

You have two choices:
   1. Mount your GPS antenna in a window.  Our GPS products have the ability to operate in a single-satellite mode which allows you to mount the antenna in a window of your building with only a partial view of the sky.  See this Window-Mount Installation Guide for details.
   2. Purchase a CDMA-synchronized product which works very well inside buildings (assuming your area has CDMA coverage).

All EndRun GPS-synchronized products with up-to-date firmware will not be affected by the April 7, 2019 rollover event.  For more information, please refer to Field Service Bulletin 180427.

The standard antenna cable length is 50 feet.  If you need more we offer antenna lengths up to 250 feet without a GPS preamplifier.  If you need more than 250 feet of cable then a preamp is required.  You can run an additional 250 feet of cable for every preamp installed and you can have up to 3 preamps.  This will allow you to run a total of 1000 feet of cable.  For more information click here.

Unlike CDMA, GPS will not work inside buildings.  To receive GPS signals the antenna must have a view of the sky.  The best location is on a roof-top with the antenna in view of a maximum amount of sky.  However, our GPS products have the ability to operate in a single-satellite mode.  This lets you avoid the trouble and expense of a rooftop installation by allowing you to mount the antenna in a window of your building with only a partial view of the sky.