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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Mark,</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">It is not clear if your cable run is long or just too difficult to do? I know of no IRIG-B solution. Maybe it’s your new million dollar idea? Do your K2’s have the external GPS port? That’s serial data.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">We use an external GPS receiver with a pair of fibermux’s. Our solution is pricy for the real long runs at about $3500 and the run is good out to 8km. There might be cheaper Antenna, Receiver, F/O Mux-to-Mux deals out there, I just have not explored any new solutions for quite some time.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">For runs of about 120 feet to about 600 feet you can use an inline GPS amplifier. They run less than $200. You have to do some cable loss calculations in order to select the Db gain you’ll need (10-40Db gain). We use LMR400 low loss cable.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Lastly, there are also some GPS antenna, down/up converters that are good on LMR400 to about 1500 feet.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">There’s lots of choices.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Kyle sends…!!!</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> ANSS-netops [mailto:<a href="mailto:anss-netops-bounces@geohazards.usgs.gov">anss-netops-bounces@geohazards.usgs.gov</a>] <b>On Behalf Of </b>Meremonte, Mark<br><b>Sent:</b> Wednesday, March 02, 2016 1:36 PM<br><b>To:</b> <a href="mailto:anss-netops@geohazards.usgs.gov">anss-netops@geohazards.usgs.gov</a><br><b>Subject:</b> [ANSS-netops] Timing: IRIG-B conversion to NMEA</span></p><p class="MsoNormal"> </p><div><p class="MsoNormal">Hi All,</p><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Have a K2-Altus where difficult to install GPS coax cable to a skyview location. However, nearby is a network connection where IRIG-B is available over the Ethernet. Anyone have knowledge of an IP device that could grab the IRIG-B signal, convert it to a standard RF GPS NMEA signal to input over coax to K2 in this instance?</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Or, I wonder if a logger that supported IP and NTP was installed, could that IRIG-B be converted into a NTP signal for logger to utilize?</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">3rd option I entertained is use of an Fiber Optic Network System which has a pair of devices which provides a standard RF GPS NMEA coax signal to device. (very expensive system though).</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Regards,</p></div><div><p class="MsoNormal">mark</p></div><div><div><p class="MsoNormal"> </p></div><p class="MsoNormal">-- </p><div><div><div><div><p class="MsoNormal"><span style="color:#888888">*********************************************************<br></span><span style="color:blue">Mark Meremonte</span><span style="color:#666666"> Geophysicist </span><br><span style="color:#666666">U.S. Bureau of Reclamation: </span><span style="font-size:9.5pt;font-family:"Tahoma",sans-serif">Seismology, Geomorphology, and Geophysics Group</span></p><div><p class="MsoNormal"><span style="color:#666666;background:white">Denver Federal Center</span><span style="color:#666666"> Work: 303-445-3298 Cell: 303-808-3894</span></p></div><div><p class="MsoNormal"><span style="color:#666666">POBox 25007, 85-833000 Email: <a href="mailto:mmeremonte@usbr.gov" target="_blank">mmeremonte@usbr.gov</a><br>Denver, CO 80225 Web: <a href="http://www.usbr.gov" target="_blank">http://www.usbr.gov</a></span></p></div><div><p class="MsoNormal"><span style="color:#666666">Ship: U.S. Bureau of Reclamation, DFC, Bldg. 67-10th Floor, Denver, CO 80225</span></p></div><div><p class="MsoNormal"><span style="color:#888888">**********************************************************</span></p></div></div></div></div></div></div></div></div></body></html>