I have two separate low cost 433 MHz transmitter (datasheet) and receiver modules (datasheet) running at 5V.
I wish to use them both in half-duplex operation, sharing a single antenna.
My questions are:
- Could I simply connect the antenna to both antenna pins? I am aware the full power transmission could then damage the receiver, but would this be a real risk at the low power I am operating them? I tried it on the breadboard and it worked fine, but I am not sure if there is a long-term risk.
- If not, which solution would be the simplest way to go? I am looking at this SPDT switch between the antenna and RX/TX. Is there a simpler solution for adequate performance?