can not comiunicate through ask rf module
It looks like you are using something like this: -



Without antennas!!!!

If you are not using antennas then you are probably assuming you can just feed serial data to the transmit module and get reconstituted perfect serial data from the receive module.

This would be naive.

You need to package your transmissions up with a header/preamble, an address (ideally), data and a checksum (ideally). Then you need to look at your received data (noisy as hell usually when a transmission is not being sent) and recognize the header/preamble then be prepared to recognize the end of the preamble and start of the address/data. Finally, double check the packet with the checksum.

If any inconsistency occurs you should throw the data away and await a re-transmission.

It's never as easy as it seems.