by LouisvilleCard » Sat Feb 23, 2008 10:25 am
It was typically reporting in Mexico just a few reporting cycles of 5-6 minutes each and then returning to the Midwest. This morning I noticed reports stopped at 11:57 PM last night, she probably turned her phone off, and at 5:07 AM this morning to the present time it has reported as being in Monterey, Mexico again.
She was at a sleepover with girlfriends and the 11:57 PM report was exactly where I expected her to be. Since then I've had 17 straight reports over the last 5 hours that the phone is in Mexico.
Altitude in Monterey varies between 2079-2296 feet, no negative numbers, and has not been out of that range all morning. I am seeing some very low speed numbers and some heading changes that indicate movement and could account for the altitude variation.
Reports are not set to come in every minute since that would drain the old i850 in less than 12 hours so I have set it up at 5 or 6 minute cycles. I might set it to 1 minute on the new i880 and see if I can get any better detail. I'll also see what time she turned her phone off last night and back on this morning. Midnight I can see turning it off, but awake at 5:00 AM to turn it back on would be a minor miracle.
Appreciate your help as I am completely flummoxed, LouisvilleCard
hutch109 wrote:Technically duplicate ID COULD be the problem - as you can have 2 phones with the same ID - and it will do what you say. With that said, AT will not issue 2 of the same numbers, but someone could have still inputed the wrong number into their phone - even though they use a check-sum to keep the guessers away.
The more likely cause would be a multi-path signal - if the unit is not staying in the wrong place for a long time. GPS location is based on exact timing - if the received signal is "slowed-down" by an outside force, the location would be incorrect. A reflected signal from a building, garage, overhang, or something else - could cause an erroneous location to be displayed.
The error is usally not that far off - where you would go from the midwest to Mexico though. When its in Mexico - how long does it stay there? Does it go from the midwest, to Mexico, back to midwest - with every passing minute? Or does it go from the midwest, to Mexico once - and then stay back in the midwest for a while?
Also - keep an eye on the altitude section - usually during multipath - you will get strange readings there also - negative amounts, or large jumps.
Eric
It was typically reporting in Mexico just a few reporting cycles of 5-6 minutes each and then returning to the Midwest. This morning I noticed reports stopped at 11:57 PM last night, she probably turned her phone off, and at 5:07 AM this morning to the present time it has reported as being in Monterey, Mexico again.
She was at a sleepover with girlfriends and the 11:57 PM report was exactly where I expected her to be. Since then I've had 17 straight reports over the last 5 hours that the phone is in Mexico.
Altitude in Monterey varies between 2079-2296 feet, no negative numbers, and has not been out of that range all morning. I am seeing some very low speed numbers and some heading changes that indicate movement and could account for the altitude variation.
Reports are not set to come in every minute since that would drain the old i850 in less than 12 hours so I have set it up at 5 or 6 minute cycles. I might set it to 1 minute on the new i880 and see if I can get any better detail. I'll also see what time she turned her phone off last night and back on this morning. Midnight I can see turning it off, but awake at 5:00 AM to turn it back on would be a minor miracle.
Appreciate your help as I am completely flummoxed, LouisvilleCard
[quote="hutch109"]Technically duplicate ID COULD be the problem - as you can have 2 phones with the same ID - and it will do what you say. With that said, AT will not issue 2 of the same numbers, but someone could have still inputed the wrong number into their phone - even though they use a check-sum to keep the guessers away.
The more likely cause would be a multi-path signal - if the unit is not staying in the wrong place for a long time. GPS location is based on exact timing - if the received signal is "slowed-down" by an outside force, the location would be incorrect. A reflected signal from a building, garage, overhang, or something else - could cause an erroneous location to be displayed.
The error is usally not that far off - where you would go from the midwest to Mexico though. When its in Mexico - how long does it stay there? Does it go from the midwest, to Mexico, back to midwest - with every passing minute? Or does it go from the midwest, to Mexico once - and then stay back in the midwest for a while?
Also - keep an eye on the altitude section - usually during multipath - you will get strange readings there also - negative amounts, or large jumps.
Eric[/quote]