Ultimate GPS Breakout (MT3339) awful sensitivity (or SNR)
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- esafonov
- Posts: 1
- Joined: Tue Aug 05, 2014 10:59 am
Ultimate GPS Breakout (MT3339) awful sensitivity (or SNR)
I am testing a new Adafruit Ultimate GPS Breakout v.3, and I found it can't do fix for an hour or two. I put it in a plastic box and leave it outside for a 10 hours. It found 4 satellites only, and fix. After doing cold restart it lost them, and... (see a picture). I can't believe it! "Ublox NEO-6M" does much better on the same conditions. Is there any trick with this modules exist?
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- adafruit_support_mike
- Posts: 67446
- Joined: Thu Feb 11, 2010 2:51 pm
Re: Ultimate GPS Breakout (MT3339) awful sensitivity (or SNR
Did you put a battery in the breakout? The GPS module stores its satellite tracking data in volatile memory, which is lost if you remove power completely. If you give it a battery, the old values are preserved and extrapolated forward, making it easier for the module to get a new fix.
Please be positive and constructive with your questions and comments.