RF communication (433MHz)

[Bruce]

Sylvio,

You might be able to filter out some noise, and help extend range, by adding a few small capacitors in your receiver circuit.

Start with 0.01uF to 0.1uF, and place them as close as possible to the Vcc and ground pins on the receiver.

Also make sure you have similar decoupling caps between the PIC Vcc and ground pins. Also as close as possible to these pins. If the oscillator isn't located too close to the receiver, this should help.

[sirvo]

Hi Bruce,

There are 3 decoupling caps on the board.

1 of 100nF in the receiver power supply.
1 of 100nF in pic's power supply.
1 of 10uF on the battery source.

Maybe I should try to change this values to find out a optimal situation.

Thank you.