RF Transmitter and receiver

[visvanathan R]

 

How to transmit and receive the signal in RF Module and how its working?. if i use multiple transmitter and one receiver then can i receive the all transmitter signal at  same time in  receiver. 

[MASTER MOHIT]

SIR,
I HAVE ALSO THE SAME PROBLEM I AM NOT GETTING WHAT TO START AND HOW TO START ??? CAN U HELP ME ?? PROBVABLY BY NOW U HAVE FOUND OUT THE SOLUTION ??
THANK U SIR

[Amrith]

You can use microcontroller to interface RF transmitter & receiver. The other way is, use Encoder & Decoder IC to transmit & receive data. You can use multiple transmitters & single receiver but it is not possible that receiver will receive all the data at same time, you need to maintain some delay between each transmission.

[Amrith]

Hi,

You can use microcontroller to interface RF transmitter & receiver, the other way is to use RF encoder(HT12E) & decoder(HT12D) IC’s to communicate with RF modules.

You can use multiple transmitter & one receiver but it is not possible that the receiver will receive all the transmitted data frommultiple transmitters at the same time.you need to maintain some delay after each transmission. 

[Lui Yat Ming]

 

Hi,Amrith,

 

I use Hyperterminal without c code in paper ‘ 

How to interface computer’s Serial Port (RS232) with 8051 microcontroller (AT89C51) ‘. I do not know why was that?

Please help!

Also I do not know the sentance in c code such as P1=value;&

P2=P1-32; It is for what ?

Thanks for an explanation.

 

For more explanation, the Hyperterminal also can type the ‘char’ and display exactly without c code in paper.  

 

I have sent more information to contact you!, but no reply. 

[Amrith]

Hi Lui..

Below is the connection digram to interface 8051 & PC

wysiwyg_imageupload:5608:height=624,width=543

[AJISH ALFRED]

Hi Visvanathan,

RF modules have in-built circuit to modulate your data and transmit. In receiver side there will be a demodulator also. Normally we have ASK and FSK modules.

If there are more than one transmitter or receiver in operation at the same time, you should use encoder and decoder. Use HT12D, HT12E pair.

A single transmitter, multi-receiver configuration is possible, but single receiver and multiple transmitter is impossible unless you implement some kind of a multiplexing scheme like TDMA.

[Author]

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