RF, I have problems

moonstreat said:
is there any way I know if ta antenna to receive anything?
Click to expand...


Hook a working receiver to it

I was testing similar modules recently, and I have a Scanner receiver that I can program to 433.92MHz. I also have a signal generator that outputs AM on 433.92. I also have a 50Ω dummy load and a RF Power meter which I own.
 
I used **broken link removed** and **broken link removed**. I did not use a commercial encoder/decoder. I used a PIC as the encoder and as the decoder. For power savings, I woke up the RX from a dead start once every 2 sec. Notice the extremely low power requirement for this RX.

I was able to get ~100m range with half-wave dipole antennas.
 
moonstreat said:
your antenna is a piece of bare wire?
Click to expand...

It is a center-fed 1/2λ dipole consisting of two 1/4λ "bare" wires. One side goes to the TX output pin, the other side goes to the TX ground pin. Both TX and RX must be the same polarization, either horizontal or vertical. If cross-polarized, there is a 20db loss of fade margin.
 
moonstreat said:
I may not do to communicate because I lack this antenna ... = \
Click to expand...
I dont think antennas is your problem. I'm beginning to think your RX is dead.
 
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