Home PageFacebookRSS News Feed
PocketGPS
Web
Read the current newsletter! Weekly
Newsletter
SatNav,GPS,Navigation
Pocket GPS World - SatNavs | GPS | Speed Cameras: Forums

Pocket GPS World :: View topic - GPS receiver life
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in for private messagesLog in for private messages   Log inLog in 

GPS receiver life

 
Post new topic   Reply to topic    Pocket GPS World Forum Index -> GPS Receivers
View previous topic :: View next topic  
Author Message
May123
Occasional Visitor


Joined: Apr 29, 2020
Posts: 1

PostPosted: Wed Apr 29, 2020 5:10 pm    Post subject: GPS receiver life Reply with quote

Hello, I have some problems with GPS receivers .
I have 10 devices with gps reciver- (model- fastrax upatch 300)
Each receiver receives a different number of satellites in same place and same time. Sometimes there are recive satellites and those who do not.
1. What is the reason for this?
2. What is the life of this reciver?
Back to top
View user's profile Send private message
M8TJT
The Other Tired Old Man
The Other Tired Old Man


Joined: Apr 04, 2006
Posts: 9956
Location: Bexhill, South Sussex, UK

PostPosted: Wed Apr 29, 2020 7:22 pm    Post subject: Reply with quote

Q1.
Who knows. But a possible reason could be that the local oscillator in one can affect others causing problems with reception.
You need to separate them by several feet at least.
The various receivers might (will likely) have different sensitivities.

There are several different lots of positioning sats (GPS, Biedou, Galileo, Glonas etc. Some of your devices might be using more than one system, thus more sats.

But it seems that you have 10 of the same so that appears to be irrelevant. So back to my first idea.
Q2.
Until they fail.
Back to top
View user's profile Send private message
jad12
Occasional Visitor


Joined: Apr 13, 2017
Posts: 20
Location: Bromsgrove UK and Vung Tau Vietnam

PostPosted: Sun May 03, 2020 1:15 pm    Post subject: Reply with quote

When you say same place, how far apart are they? They are line of sight so some sats could be blocked at the time for some receivers. There is also maybe multipath happening where reflected signals interfere with the direct. This could make the receiver lock onto another sat of better signal strength.

If they are very close then I agree with the last answer.
(I assume, as I don't know the model, that the antenna is in the box and you have nothing sophisticated with a detached antenna.)

I definitely cannot improve on the Q2 answer.

Cheers
_________________
A school of dolphins A flock of birds A pride of lions A lost of navigators
Back to top
View user's profile Send private message Visit poster's website







Posted: Today    Post subject: Pocket GPS Advertising

Back to top
Display posts from previous:   
Post new topic   Reply to topic    Pocket GPS World Forum Index -> GPS Receivers All times are GMT + 1 Hour
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB 2.0.11 © 2001 phpBB Group
phpBB port v2.1 based on Tom Nitzschner's phpbb2.0.6 upgraded to phpBB 2.0.4 standalone was developed and tested by:
ArtificialIntel, ChatServ, mikem,
sixonetonoffun and Paul Laudanski (aka Zhen-Xjell).

Version 2.1 by Nuke Cops 2003 http://www.nukecops.com

Make a Donation



CamerAlert Database

Click here for the PocketGPSWorld.com Speed Camera Database

Download Speed Camera Database
18.053 (20 May 20)



WORLDWIDE SPEED CAMERA SPOTTERS WANTED!

Click here to submit camera positions to the PocketGPSWorld.com Speed Camera Database


12mth Subscriber memberships awarded every week for verified new camera reports!

Submit Speed Camera Locations Now


CamerAlert Apps



iOS QR Code






Android QR Code







Terms & Privacy


GPS Shopping