I have one pair of RFM85 TX and FRM83C RX modules both at 433MHZ, and I have a strange problem:
Receiver connected to a 5V bench power supply, and dataout to a scope. I have the output switching always at random frequency.
I have no RF noise on the environment (other 433Mhz mudules operate ok).
I had try with several RMF83C (I have 5) and all have the same problem.
Antenna is a 16cm wire, but I had try WHIP also, with same problem.
Had try a 100K pull up resistor with no luck...
I'm doing something wrong here? Please help.
I dind't bought the modules here but I hope you can help anyway...
Thanks in advance
This message was edited 2 times. Last update was at 23/07/2015 14:12:07