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GPS Receiver GR89 Holux

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abcqasim

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Hi !
If anybody working on GPS Receiver Holux Br89 or already worked on this project then please share the schematic to see GPS Data on Hyper terminal.
 

GR89 supports NMEA-0183 v2.2 data protocol and SiRF binary code.

It uses serial communication as it gives two channels of tx and rx. use can use txA and connect to rx of PC through serial cable.
 
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    mtekpk

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No, I think it need max232 to communicate with PC. if any body already worked on this project then share the circuit diagram
 
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    mtekpk

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Can anybody explain what is the function of pin 19 and pin 20 in Holux GPS Receiver GR 89 and where i have to connect antenna.
 
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    mtekpk

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Hi, antenna's RF signal you have to connect to pin 17.
Pin 19 and 20 is used to supply power for active antenna.
If you are using passive, just leave them open. If active- you have connect pin 19 to pin 20.
Im working with holux M-89 and already getting gps strings.
Good luck.
 
Thanks for the answer but can u explain me the difference between active and passive antenna.
 
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    mtekpk

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Active antenna needs power supply, passive doesnt need.
 
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    mtekpk

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Thanks for the answer but can u share your schematic of Holux M-89 GPS Receiver, because this will clear all the problems and willl be helpful in my project.
 
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    mtekpk

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See also datasheet of holux gr89 .**broken link removed**
 
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    mtekpk

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