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20 Channel EM-406A SiRF III Receiver with Antenna
sku: GPS-00465
Description: The EM-406A GPS module from USGlobalSat 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 module makes a great gift for that special someone who's interested in playing with GPS. For more gift ideas check out the SparkFun Gift Guide!
Check out our GPS buying guide!
Features:
- Weight: 16g including cable
- 20-Channel Receiver
- Extremely high sensitivity : -159dBm
- 10m Positional Accuracy / 5m with WAAS
- Hot Start : 1s
- Warm Start : 38s
- Cold Start : 42s
- 70mA at 4.5-6.5V
- Outputs NMEA 0183 and SiRF binary protocol
- Smallest complete module available: 30mm x 30mm x 10.5mm
Documents:
- EM-406A Datasheet
- NMEA Reference Manual
- SparkFun GPS Tutorial
- GPS Tutorial by Michael Simpson
- SiRF Demo Software
- Wiring Example
Please note that the grey wire on the communication cable is not pin 1!
Pricing
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Comments
8 comments
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This GPS engine really shines, easily handling conditions which throw Oncore VP, STMicro, Asin, Rockwell Jupiter, and other engines I have used, into an endless search for over half an hour with not even a 2D lock (I have a few spots I like to stop and test engines at, while eating lunch).
Later, I wired in a Lucent Quad-Helix GPS antenna, and on a few mountainous/canyon treks, which in the past have left hundreds of bread crumb track tidbits, due to the loss of signal with the very same antenna, I got a single continous trail log.
Highly recommended, it ROCKS!!!
Figured I try anyway.
chris.
Just bought, Powered inside my home, near a windows, and in 12 seconds it found the signals!
I'm using in my system of telemetry!
http://sites.google.com/site/ricolk32/telemetria
The Serial interface is not RS232. It is TTL level and inverted from normal RS232. The serial signal is 8 bits, no parity and one stop bit. Or at least that's what works for me.
I want to reduce consumption GPS module without disconnecting the power supply so as to allow a hot start when prompted and the position within 1 second.
thank you very much.
This particular module has a built in backup power supply. AS long as you stop and start the module in the same place it should hot start.
If you move a long way away from the 'turn off' position, then a warm or cold start may occur.
What sorts of materials are the GPS frequencies particularly transparent and/or opaque to? How direction dependent is the reception of the ceramic antenna?
Both experience and experimental data welcome.
Thanks,
Ian