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Build a 500 metre radio data link for under $40.

Step 4Transmitter module

The transmitter module is available on ebay for around $US14 at http://stores.ebay.com.au/e-MadeinCHN. The current consumption is around 100mA when transmitting at 9V, and is virtually nothing when idle. The antenna was removed to build the dipole, though the module might be ok with the antenna attached if it were paired with a different microcontroller. The coax braid is connected to the module earth which is conveniently next to the antenna connection.

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1 comment

Mar 16, 2010. 12:50 PMNXTreme says:

It seems that the link is broken. For anyone wanting to find the eBay store listed I think it is http://stores.ebay.com/e-MadeinCHN. They have a page that is just about their radios, find it here. The radios do seem pretty cheap, thanks for pointing them out Mr. Moxham!