433Mhz Transmitter and Receiver pathloss

[san7]

Hello Forum,

I have a 433MHz Transmitter and Receiver with following parameters;

Transmitter;

3.3V ,10dBm o/p power ,433MHz ,FSK

Receiver;

5V , -106dBm sensitivity , 433MHz ,FSK

I am in need of decreasing the Range of 433Mhz Transmitter to 6-7meter . For this I plan to introduce T atteunator before antenna . Please guide me how much powerloss is required for this distance.

I also want to reduce the sensitivityof receiver , can this be done with T atteunator at antenna i/p. How much strength is require by the Receiver to sense a transmitter at this range 6-7meter .

Thanks in Advance
-San