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Ultimate Geek
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Topic # 223695 13-Oct-2017 09:10
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I’m sure there are some very skilled members here who would know how to disconnect the Z-Wave antenna on ST board and once that’s done is it safe to use in NZ?
Here is a picture of the board with the antenna marked. I was thinking of ripping it out or cutting the antenna but not sure if it will brick the ST. I know I’m. It supposed to use the Z-Wave as it’s on US frequency and I won’t until I’m absolutely sure Z-Wave is off at hardware level. Any help or advise appreciated.

 


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  Reply # 1882852 13-Oct-2017 10:33
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It looks like the transceiver circuit is on a separate daughter board from the main board. You might be able to simply remove the whole daughter board. Which would be the best from a compliance point of view as the device would no longer contain a transmitter.

Try and see if you can track down the manufacturer of the daughter board. If you are lucky you might be able to buy a new one that uses NZ zwave frequencies.

And if you are unlucky removing the daughter board will brick your device.

A lot depends on how much smarts is built into that daughter board. Is it simply a dumb transceiver or does it have the full protocol stack on board?





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  Reply # 1882898 13-Oct-2017 11:32
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With 5 mins searching you have this at the moment:

 

https://www.digikey.com/product-detail/en/sigma-designs-inc/ZM5304AU-CME3R/703-1075-1-ND/4135432

 

You need this:

 

https://www.digikey.com/product-detail/en/sigma-designs-inc/ZM5304AH-CME3R/703-1076-1-ND/4135433

 

Same device.. different freq. (921Mhz instead of 908Mhz)

 

 

 

If this will work or fit or is correct I am not sure.


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