problem with two RF Tx’s

[m venugopal]

Hi,

i am trying do a project by using basic 434Mhz RF module, when i am transmitting data by using one transmitter to two or three receivers receivers, receivers responding without any error, i got successful result in this case but, the problem is, when i am trying to send data by using two transmitters to two receivers,!! dont know why, even one receiver not responding.

circuit description:

i am using two transmitters and two receivers, with different address configurations. as per address configurations Tx1 should connect with Rx1 only even Tx2 and Rx2 in ON. and  Tx2 should connect with Rx2 only even Tx1 and Rx1 in ON. 

when any one transmitter is ON, then i am getting proper result, but problem is when two transmitter are ON. two receivers are not responding.

 

please any one explain why?? 

and anyboby have solution please reply me.

[Ashutosh Bhatt]

you might have  put both transmitters in continuous transmission mode. turn on transmission only when it is required to transmit data 

it u r using HT12E then you can start of stop transmission using TE pin

[Author]

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