I think you need to put the antenna outside. In my situation, I put the antenna on the balcony.
It usually takes me only several minutes to get an accurate time (diff<0.000001). Wu From: discuss-gnuradio-bounces+wu.ting=comf5.comm.eng.osaka-u.ac...@gnu.org [mailto:discuss-gnuradio-bounces+wu.ting=comf5.comm.eng.osaka-u.ac...@gnu.or g] On Behalf Of Alex Zhang Sent: Monday, September 24, 2012 2:51 PM To: gnuradio mailing list; usrp-users Cc: Tom Rondeau; j...@ettus.com Subject: [Discuss-gnuradio] Waiting too much time for the GPS to be synchronized Hi, I have two USRPs with GPS equipped. I found it always took too much for the two GPS to be sychronized to the same time (diff < 0.00001s). Previously, I wait about 1 or 2 hours, but today 10 hours later, they still have time difference of 5s. I am using GPS indoor environment. -- Alex, Dreams can come true - just believe.
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