tag:blogger.com,1999:blog-5679825113811261335.post8738914710314975617..comments2023-09-19T23:57:37.836-07:00Comments on Michele's GNSS blog: At ION GNSS+ 2014Michelehttp://www.blogger.com/profile/03657889163945060210noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5679825113811261335.post-47868812492285928682015-03-17T00:02:44.391-07:002015-03-17T00:02:44.391-07:00Well yes I modified a great deal of things, but I ...Well yes I modified a great deal of things, but I can assure you the normal version allows you to acquire and track GPS signals just fine.<br />How can you say that your PLL unlocks? The R820T is surely able to lock well above 1575.42 MHz so I will need more details to help you, otherwise I am sure you will solve your bug on your own soon.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5679825113811261335.post-2526043860687626112015-03-16T04:03:21.120-07:002015-03-16T04:03:21.120-07:00having worked for the last 6-7 months on software ...having worked for the last 6-7 months on software decoding of GPS signals, I wish<br />to extend the usable hardware I am using from the E4k dongle to the R820T dongles I<br />have bought. However, I am unable to lock any of the 10+ dongles I have ordered (for<br />educational purposes), the PLL unlocks right below the GPS band (I reliably lock on<br />1.57 GHz, unreliably on 1.52 GHz with a PLL unlocking after a few seconds, and never<br />on 1.5742 GHz).<br /><br />Have you modified the hardware of your dongles ? or the fractional PLL configuration software ?<br />I am currently using gr-osmosdr or rtl_sdr for recording signals with the E4K whose decoding<br />works perfectly.<br /><br />Thank youAnonymoushttps://www.blogger.com/profile/04707261801357732829noreply@blogger.com