GPS Screens Seem too Small?

Started by D from BC in sci.electronics.design9 years ago 23 replies

I'm looking at GPS receivers. The type for those that get lost on the local roads :P Is it me or do those little displays seem ...too...

I'm looking at GPS receivers. The type for those that get lost on the local roads :P Is it me or do those little displays seem ...too small? I use a 24" desktop monitor and when I look at a GPS gizmo with it's ~3.5' x 3.5'..Welll..It looks inadequate. One idea I'm entertaining is to take my old 17" LCD monitor, fasten it to the dash (via adjustable arm) and find a GPS receiver that puts...


signal strength on a GPS

Started by Jim Whitby in sci.electronics.design5 years ago 39 replies
GPS

I'm asking this here in the hope someone knows something about GPS receivers. I'm a decent tech, but not an engineer... I have a Tomtom...

I'm asking this here in the hope someone knows something about GPS receivers. I'm a decent tech, but not an engineer... I have a Tomtom 2535 gps. Nice unit blah blah. Some ( software? ) engineer decided to change the gps info display. It now contains a pic of earth with dots for satellites instead of a bar graph. Ok. No biggie. Except now there is a signal strength percent! Perce...


NMEA GPS Signal Generator

Started by Anonymous in sci.electronics.design5 years ago 8 replies
GPS

I'm looking for a GPS Signal Generator to test GPS receivers in manufacturing. I found...

I'm looking for a GPS Signal Generator to test GPS receivers in manufacturing. I found this, http://dx.com/p/professional-gps-signal-generator-test-module-w-antennas-147378 But I think it's just a jammer. I'm trying to avoid getting an expensive vector signal generator to do this. Anyone know of something like this? Thanks


GPS Question

Started by mpm in sci.electronics.design7 years ago 14 replies
GPS

Does anyone know when GPS signals first became available for use by private enterprise? Was it prior to May 1988, or afterwards? I may need...

Does anyone know when GPS signals first became available for use by private enterprise? Was it prior to May 1988, or afterwards? I may need this information to fend off a groundless, analysis-free 103 rejection at the patent office. Wikipedia doesn't really spell it out. I want to know when manufacturers of commerical electronics started (legally) using GPS in their product designs. S...


GPS spoofing

Started by Jan Panteltje in sci.electronics.design5 years ago 20 replies
GPS

GPS spoofing: ...

GPS spoofing: http://www.ae.utexas.edu/news/archive/2012/todd-humphreys-research-team-demonstrates-first-succ essful-gps-spoofing-of-uav Think there is some money in this... Now lemme try this little geepeesss module...


LNAs, Noise Figures and Compression Points

Started by Chris in sci.electronics.design9 years ago 2 replies
GPS

Once you saturate an LNA does the noise figure begin to increase rapidly? I was working on a project which utilized an LNA in an RFD path...

Once you saturate an LNA does the noise figure begin to increase rapidly? I was working on a project which utilized an LNA in an RFD path to ultimately feed a GPS receiver. While watching the GPS L1 center frequency (1575.42 MHz) at the input to the GPS receiver with a spectrum analyzer we began to radiate INMARSAT transmissions (1626.5 to 1660.5 MHz) in the direction of the GPS receiver....


GPS module with clock output?

Started by Davej in sci.electronics.design4 years ago 28 replies

I'm wanting to accurately time-stamp some outdoor events. This is a stationary outdoor situation so I thought a GPS module might be a...

I'm wanting to accurately time-stamp some outdoor events. This is a stationary outdoor situation so I thought a GPS module might be a good approach for accurate time. If I could find a GPS module with a clock output rather than a 1PPS output maybe I wouldn't need to consider an additional disciplined oscillator module -- since I don't expect to lose the GPS signal lock. Any low-cost suggestio...


GPS Navigator vs Mini-Notebook+GPS

Started by D from BC in sci.electronics.design8 years ago 21 replies

I need GPS Navigation. What's the best bang for the buck? A 7" GPS Navigation System These range from ~$160.00 to $600.00 on...

I need GPS Navigation. What's the best bang for the buck? A 7" GPS Navigation System These range from ~$160.00 to $600.00 on Eb*y. OR...... Get an Acer mini-notebook http://www.atic.ca/index.php?page=LongDesc&sku=52354 $282.00Can + GPS receiver http://www.atic.ca/index.php?page=LongDesc&sku=40753 $81.00Can + get some map software somewhere (*cough*) + get a DC to DC converter ...


Frequency Standard - Rubidium or GPS?

Started by bart in sci.electronics.design8 years ago 40 replies
GPS

Hi all, I'm looking for some sort of frequency standard (10 MHz ref.?). Ebay has rubdium frequency standards for under $100.00 and there...

Hi all, I'm looking for some sort of frequency standard (10 MHz ref.?). Ebay has rubdium frequency standards for under $100.00 and there are also GPS disciplined OXCO frequency standards for ~$150.00 . My question : Is a 10-20 year old rubidium standard more accurate (even with aging drift) that a newer GPS disciplined OXCO? I can't afford a GPS corrected rubidium standard ( ~$70...


Expert GPS analysis requested

Started by Richard Henry in sci.electronics.design6 years ago 18 replies
GPS

No politics please - what is the technical impact of Lightsquared transmitters on military-use GPS systems?

No politics please - what is the technical impact of Lightsquared transmitters on military-use GPS systems?


Testing the Dealextreme ET411 GPS module

Started by Jan Panteltje in sci.electronics.design5 years ago 98 replies
GPS

Created a web page for the software: http://panteltje.com/panteltje/gps/ Please note this is just a quick hack, but it seems to work so...

Created a web page for the software: http://panteltje.com/panteltje/gps/ Please note this is just a quick hack, but it seems to work so far. Here is some output: Panteltje (c) gpspc-0.2 for EM-411 GPS receiver board ESC exits. latitude 1234.5678 N longitude 901.2345 E msl_altitude1 -18.5000 M geoid_separation 46.6000 M age_of_differential_correction 0.0000 station_id 0 ...


GPS antenna

Started by Michael in sci.electronics.design7 years ago 4 replies
GPS

Hello This is actually not about antenna, but about signal propagation. I need to add GPS capability to existing product. The only available...

Hello This is actually not about antenna, but about signal propagation. I need to add GPS capability to existing product. The only available place is under rubber keypad (the rest of the instrument is EMI coated anyway). The keypad is grey... The active antenna/GPS module combo I picked up works fine until I insert them inside of the box (under the keypad). Antenna is 10x10mm, keypad is ~ c...


What is the cheapest way to get a GPS + solid state gyro?

Started by Peter in sci.electronics.design5 years ago 23 replies
GPS

I am looking at a project which requires a simple GPS receiver (not waas/egnos) and a low grade solid state gyro (not a "level") like the ones...

I am looking at a project which requires a simple GPS receiver (not waas/egnos) and a low grade solid state gyro (not a "level") like the ones you get in smartphones. The build volumes will be initially a batch of 100 and later perhaps thousands, but not more than that. What would be the currently recommended GPS module or chip, and a solid state gyro component? There is a lot of stuf...


GPS 12Ch, 16CH 32CH 50Ch

Started by Joe G (Home) in sci.electronics.design9 years ago 6 replies
GPS

What's the difference between the number of GPS channels? What is the performace difference Thanks in Advance Joe

What's the difference between the number of GPS channels? What is the performace difference Thanks in Advance Joe


Testing the Dealextreme ET411 GPS module

Started by Jan Panteltje in sci.electronics.design5 years ago
GPS

http://panteltje.com/panteltje/gps/ multiple waypoints and plane control framework added. :-)

http://panteltje.com/panteltje/gps/ multiple waypoints and plane control framework added. :-)


Re: prototyping GPS

Started by JosephKK in sci.electronics.design9 years ago

On Fri, 24 Oct 2008 17:01:06 -0500, hal-usenet@ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote: > ...

On Fri, 24 Oct 2008 17:01:06 -0500, hal-usenet@ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote: > http://www.u-blox.com/customersupport/docs/GPS_Compendium(GPS-X-02007).pdf Did you really think it is right to inflict us with advertising?


Best Portable GPS

Started by Jim Thompson in sci.electronics.design6 years ago 4 replies
GPS

I have GPS built into the Q45, but I'd like to buy something to travel with when I get rental cars. What's the best? ...

I have GPS built into the Q45, but I'd like to buy something to travel with when I get rental cars. What's the best? ...Jim Thompson [On the Road, in New York] -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and...


hobbyist frequency standard

Started by Anonymous in sci.electronics.design8 years ago 12 replies
GPS

Hi gang, There seem to be a lot of surplus GPS discliplined 10MHz OCXOs on eBay lately. Anyone here have experience using a setup like...

Hi gang, There seem to be a lot of surplus GPS discliplined 10MHz OCXOs on eBay lately. Anyone here have experience using a setup like that? I'm still looking into getting my lab equipped, I'm looking into the frequency thing. Besides GPS, there's the national standards. The Canadian equivalent to WWV is CHU, they broadcast time signals on a few frequencies. Has anyone tried disciplining ...


prototyping GPS

Started by RichD in sci.electronics.design9 years ago 44 replies
GPS

GPS is now the reference for measuring distance and location on earth... which invites the question: how was it originally tested and...

GPS is now the reference for measuring distance and location on earth... which invites the question: how was it originally tested and calibrated? I mean, you throw those satellites up there, power on, get some data... but how do you evaluate the data? GIGO is reality, and we must pay homage to the great god Murphy... I'm looking at it as an engineering problem - how was the system debug...


Added an active GPS antenna to the RTL 4000 tuner/spectrum analyzer

Started by Jan Panteltje in sci.electronics.design5 years ago 5 replies

Added an active GPS antenna to the RTL 4000 tuner/spectrum analyzer. Got a little active GPS antenna from ebay (item 150748428125) only 6 $, and...

Added an active GPS antenna to the RTL 4000 tuner/spectrum analyzer. Got a little active GPS antenna from ebay (item 150748428125) only 6 $, and made a little 'T' section to power it, while connected to the 4000 DVB-T tuner: http://panteltje.com/pub/GPS_antenna_T_power_section_IMG_3790.GIF That is just a LM317 to create a voltage of 4.75 V here: active...