Hi, Mike Is this configuration specific? The reason I ask is because, on a daily basis, my sequence of actions seems to give different results! What I do is: 1. Load up the GPS software whilst still inside a building. 2. Switch off the BN V6,1. 3. About 20 minutes later, once I've made one bus journey and I'm outside waiting for the next, switch on the GPS receiver (it's a Magellan 310). 4. Once on my second bus, switch on the BN. With this sequence, as soon as the BN is switched on, I get the "acquired satellites" message. Therefore, it would seem that the GPS is looking for and acquiring satellites independent of communication with the GPS software. Regards Richard Bartholomew > ----- Original Message ----- >From: Michael May <MikeMay@xxxxxxxxxxxxxxxx >To: gps-talkusers@xxxxxxxxxxxxx >Date: Wed, 20 Apr 2005 12:39:56 -0700 >Subject: [gps-talkusers] Re: a little frustrating >Robert, >The receiver does not start looking for satellites until the GPS >application menu is loaded. >Mike >At 06:43 AM 4/20/2005, you wrote: >>Robert, >>It is best to turn the blue logger on outside when ever possible, and turn >>it off when you are going into a building. It has to do with the memory of >>the unit and it's last fix of sattlites and when you have it on indoors it >>thinks you have had it off and traveled a long distance of miles like 2 or 3 >>hundred, so it goes through a entire new sat area look mode for it has no >>updated sat. memory of the area. >>hth >>-----Original Message----- >>From: gps-talkusers-bounce@xxxxxxxxxxxxx >>[mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Robert Carter >>Sent: Wednesday, April 20, 2005 06:11 >>To: gps-talkusers@xxxxxxxxxxxxx >>Subject: [gps-talkusers] Re: a little frustrating >>Hi, >>I am using the pk and Blue Logger. Does the receiver start looking for >>satellites when it is turned on or does it only start searching when the >>gps software is started? I have been turning my receiver on inside using my >>light probe to make sure that it is on and then walking outside and >>starting the gps software. Am I shooting myself in the foot in terms of >>acquisition time by turning it on inside? >>Thanks, >>Robert Carter >>At 11:34 AM 4/19/2005, you wrote: >>>Hello, >>>There are various reasons for your sluggish GPS receiver. Having to wait >>>20 minutes for a fix is uncommon, so if this problem persists, please call >>>Sendero tech support. Also, I am not sure if you tried turning the GPS >>>receiver on and off again once you were outside, sometimes that is all it >>>takes. >>>Now for the possible culprits... >>>It is common for the GPS receiver to take a while when it is first >>>acquiring in a new location. It remembers your last location, so when you >>>turn it on in the new location it is surprised by the different latitudes >>>and longitudes. It will take a while to confirm that you have indeed >>>moved locations, it would rather give you no information than bad >>>information. The same goes for when it has been turned on indoors, hasn't >>>been used in a while, or if the battery has recently run out of >>>juice. Here is a complete description of why this happens from Charles >>>LaPierre: >>>"The GPS receiver keeps an internal almanac of where the satellites >>>"should" be. This almanac is updated when the GPS receiver is linked to >>>the satellites." >>>"When the unit is first turned on it starts looking where it "thinks" the >>>satellites should be based on its current almanac. If after a while it >>>can't find these satellites in the positions it thinks they should be then >>>it switches to a mode called Cold start where it forgets its current >>>almanac and starts searching for all satellites. This happens because as >>>far as the receiver is concerned the satellites should be in a particular >>>position at a particular time for this particular part of the country but >>>they aren't so the receiver starts over from scratch as if you just moved >>>the receiver half way around the planet, and it rebuilds it almanac of >>>where the satellites are." >>>"Cold start or cold boot as they call it can take a while to obtain a GPS >>>fix 5-10 minutes if you are lucky when out in an open area and the >>>satellites are in a favorable geometry." >>>Hope that helps, >>>Kim Casey >>>Sendero Group LLC >>>888.757.6810 >>> At 05:13 PM 4/18/2005, you wrote: >>>>Hi, >>>>I went for a walk during lunch today and I walked for 20 minutes before >>>>gps 3.0 on my Voice Note running Keysoft 5.1 got a fix on some satellites. >>>>Does anyone know why this might have taken so long to acquire a satellite >>>>fix? >>>>I just did a Voice Note warm reboot and then a reinstall of gps 3.0. >>>>I know I could upgrade to keysoft 6.x and gps 3.1 but I can't afford to >>>>right now. >>>>Anyway, can anyone tell me what the problem could have been? I was in a >>>>residential area with only a few trees and nowhere near tall buildings >>>>and it was also a sunny day. >>>>Thanks >>>>-- >>>>No virus found in this outgoing message. >>>>Checked by AVG Anti-Virus. >>>>Version: 7.0.308 / Virus Database: 266.9.13 - Release Date: 4/16/2005