Filtronic Offers Cellular + GPS Splitter/Combiner

November 4, 2015By
The PXC021-V2 by Filtronic.

The new PXC021-V2 by Filtronic is a wideband cellular + GPS low-loss splitter/combiner. Designed for repeater/DAS applications, the PXC021-V2 provides GPS L1 and L2 frequency coverage and wideband cellular frequency coverage (618-960 MHz and 1695-2690 MHz). It has low loss (≤ 0.30 dB Cellular and ≤ 0.70 dB GPS) and excellent cellular to GPS isolation (≥ 55 dB). The L1/L2 Channel Absolute Group Delay is 20 nS maximum... read more

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Federal Register Notice Seeks Comments on GPS L1 Band Interference Test Plan

September 9, 2015By

UPDATE (9/10/15): A public workshop will be held in Washington, D.C., on Oct. 2 to provide an opportunity to discuss the draft test plan and address questions before the close of the public comment period.  The workshop will be held in the RTCA NBAA/Colson Room, 1150 18th St. NW, Suite 910, Washington, D.C., 20036. Click here to register for the workshop. The U.S. Department of... read more

Galileo E1, E5a Performance for Multi-Frequency, Multi-Constellation GBAS

April 1, 2015By

Analysis of new Galileo signals at an GBAS compares noise and multipath in their performance to GPS L1 and L5. Even after smoothing, Galileo signals perform somewhat better than GPS and are less sensitive to the smoothing time constant. read more

China Launches First of Next-Gen BeiDou Satellites

March 30, 2015By

UPDATE (3/31/15): The BeiDou satellite is being targeted for an IGSO orbit, not a MEO orbit as previously speculated. The two images below make this clear.        Below is a CCTV (China Central Television) news story covering the launch. UPDATE (3/30/15): China’s launch of BeiDou-3 M1 is now being reported in that country’s media. The launch occurred at 21:52 on March 30.... read more

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Tallysman Wireless Wideband Dual-Feed GPS L1/GLONASS/ Galileo Antennas

June 18, 2013By

Tallysman Wireless announces the TW4421 and TW1421 antennas, which offer a step forward in performance for small GNSS antennas, the company said. The TW4421 is a low-cost dual-feed magnetic mount antenna covering the GPS L1, GLONASS L1, Galileo and SBAS (WAAS, EGNOS & MSAS) frequency band (1574 to 1606 MHz). The TW4421 features a 25-millimeter dual-feed wideband patch element that... read more

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GPS IIF-3 Satellite Now Transmitting L1, L2 Signals

October 4, 2012By
A Delta IV rocket lifts-off with an advanced GPS satellite from Cape Canaveral on Thursday. (Credit: ULA/Atkeison).

Video of launch. UPDATE: The SVN65/PRN24 L5 transmitter has now been switched on. L5 is the civilian safety-of-life GPS signal, designed to meet demanding requirements for safety-of-life transportation and other high-performance applications. UPDATE: The GPS Block IIF-3 satellite, SVN65, began transmitting L1 and L2 signals as PRN24 on October 8. A number of stations of the International GNSS Service are... read more

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Tallysman Wireless Introduces Wideband, Low Cost GPS-L1/GLONASS Antenna

August 16, 2012By

Tallysman Wireless, Inc., has announced the latest addition of the TW4320/4322 to its line of antenna products. The TW4320/TW4322 antennas are small wide-band, high-performance antennas housed in a compact IP67 magnetic mount enclosure, with a three-meter cable and a wide range of connectors. “Most small low-cost GPS and GLONASS antenna have narrow-band patch elements tuned mid-way, but which are 2-dB... read more

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The System: British Patent Filings Threaten GPS III and Galileo Progress

July 1, 2012By

Two British technologists backed by the U.K. Ministry of Defense have filed patents on the future interoperable GPS and Galileo signal designs that severely disrupt modernization plans for both systems and suddenly, unexpectedly place receiver manufacturers in a highly uncertain and unfavorable situation. Some of the patents have been granted in the U.K. and in Europe, and applications are pending... read more

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