RF, I have problems

[moonstreat]

is there any way I know if ta antenna to receive anything?

 

[MikeMl]

is there any way I know if ta antenna to receive anything?

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.

 

[moonstreat]

can pass me the layout of your circuit .. for me to compare to mine? please

 

[MikeMl]

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]

I think that my TX and RX, do not give what I want! what do you think?

 

[moonstreat]

your antenna is a piece of bare wire?

 

[MikeMl]

your antenna is a piece of bare wire?

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]

I may not do to communicate because I lack this antenna ... = \

 

[MikeMl]

I may not do to communicate because I lack this antenna ... = \

I dont think antennas is your problem. I'm beginning to think your RX is dead.

 

[moonstreat]

but then I bought 2 days! how is this possible if I just fed the 5 v! : S