Description: The GlobalSat EM-406A GPS module is based on the popular SiRF Star III chipset. This tiny integrated package includes on-board voltage regulation, LED status indicator, SuperCap backed RAM, and a sensitive patch antenna. The interface cable is included too.
This is one of the most sensitive GPS modules we have come across. We can often obtain reliable satellite locks indoors, which is quite hard to do with most GPS receivers.
Its NMEA-0183 compatible serial output uses 2.8V TTL logic levels. If you need standard RS-232 levels (+/-12V) then the popular MAX232 family of RS-232 interface chips can be used.
Please keep in mind that these modules are easily damaged by incorrect wiring or excessive voltage. If you do that you will void the warranty and end up with a fancy paper weight.
Features:
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20-Channel Receiver
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Extremely high sensitivity : -159dBm
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10m Positional Accuracy / 5m with WAAS
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Hot Start : 8s ,Warm Start : 38s, Cold Start : 42s
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70mA at 4.5-6.5V
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Outputs NMEA 0183 and SiRF binary protocol
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Weight: 16 grams
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Size: 30mm x 30mm x 10.5mm
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ROHS: Yes
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Includes interconnect cable
Documents:
FAQ:
Question: What is the difference between the EM-406A and EM-411?
Answer: They are essentially identical. Same SiRF III chip set, performance, size, and weight. The only difference we have found is that the RS-232 Tx and Rx signals are swapped on the 6-pin connector. Yes, if you swap them externally you can freely use either GPS.
