I have a pair of RF-UART-434-100M. Both of them are connected to the UC00A UART-USB device. I tested by opening two Serial terminal session and monitored the data transmission.
The test was patchy and eventually failed (e.g. data was being received and then only some data and finally no data was being received)
I tested the UC00A UART-USB directly and they both worked well (e.g. data was being received and sent correctly).
Suspicion is that ONE of the RF-UART-434-100M unit is not working. I've ordered another unit yesterday to see if I can find out which unit is the faulty one. I'm wondering if there is a way that I can check to see if which unit is the faulty unit - either using a multi-meter or some tools.
Having to have to do a test using trial and error takes a lot more effort than I can afford.... (Sudah tua).
Regards
RW