434MHz Wireless module help

[Sanjeeb Kumar Mohanty]

Guys, can anyone tell me the range for 434Mhz wireless module and about the antenna compatible with this ?? Can i use any alternate wireless module instead of 434Mhz ?? Please help.

[Shrikant]

I suppose you are referring to the Tx Rx modules. The antenna is basically any normal jumper wire.. 

theres a parameter lamda=f/c=434000000/300000000=1.44

to have the best range, the length of the antenna should be 1/4 of the value of lamda.

so around 36cm should be the length of the antenna (wire)… you will get a good range of almost 30m irrespective of the obstacles.

(use the antennas on both the transmitter as well as receiver side )

Hope this was helpful

[Pratik Roy]

Alternatives can be zigbee, xbee and bluetooth. But these are comparatively more expensive. 

[Sanjeeb Kumar Mohanty]

Thank you Shrikant and Pratik.

[Author]

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