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Suppose I have a device A with RF transmitter and device B with RF receiver with range 10 meters.

Is there a way a A gets notified when B is out of range? Do we have to keep checking from A at regular interval that B is accepting signals or not?

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  • \$\begingroup\$ An RF receiver doesn't have a range. An RF transmitter doesn't have a range but, together the setup up will have a range in free-space at a certain data rate at a certain temperature. \$\endgroup\$ – Andy aka Dec 13 '15 at 19:49
  • \$\begingroup\$ In a certain environment :) \$\endgroup\$ – Some Hardware Guy Dec 13 '15 at 20:13
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If you just have a transmitter at one end and a receiver at the other, there is no way for the transmitter to know that the receiver is out of range (or turned off).

You would need two-way communication between the points for the originator to know that the recipient received the transmission.

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  • \$\begingroup\$ How can I enable two-way communication in RF world? \$\endgroup\$ – rushi121 Dec 13 '15 at 17:30
  • \$\begingroup\$ For two-way communication you need a transmitter and a receiver at each end. (A transmitter and receiver are often combined in one package and called a transceiver). \$\endgroup\$ – Peter Bennett Dec 13 '15 at 17:32

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