GPS Receiver - EM-506 (48 Channel)
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The EM-506 GPS receiver from [USGlobalSat](http://www.usglobalsat.com) based on the spectacular SiRF StarIII chipset. This complete module is built upon the same technology as the ET-301, but includes on-board voltage regulation, LED status indicator, battery backed RAM, and a built-in patch antenna! 6-pin interface cable included.
This EM-506 GPS module is powered by SiRF Star IV, it can provide you with superior sensitivity and performance even in urban canyon and dense foliage environment. With SiRF CGEE (Client Generated Extended Ephemeris) technology, it predicts satellite positions for up to 3 days and delivers CGEE-start time of less than 15 seconds under most conditions, without any network assistance.
Not sure which GPS module is right for you? Check out our [GPS Buying Guide](https://www.sparkfun.com/pages/GPS_Guide)!
**Features:**
* 48-Channel Receiver
* Extremely high sensitivity : -163dBm
* 2.5m Positional Accuracy
* Hot Start : 1s
* Warm Start : 35s / 15s with CGEE
* Cold Start : 35s / 15s with CGEE
* 45-55mA at 4.5-6.5V* 30mm x 30mm x 10.7mm
* 16g including cable
**Documents:**
* [Datasheet](http://cdn.sparkfun.com/datasheets/GPS/EM506_um.pdf) (EM-506)
* [Product Page](http://www.usglobalsat.com/p-717-em-506-sirf-iv.aspx#images/product/large/717.jpg)