I have these 433Mhz chips. I already have an antenna on the transmitter chip and it works great. The receiver works too, but you have to be really close to it for it to pick up the signal. I would like to be able to detect state changes from remotes that came with my RF outlets, so I cut a length of wire as an antenna, but the receiver chip doesn’t have an ANT hole like the transmitter does.
Can I twist-tie the antenna to the coil that’s on the chip or else solder it to the chip somewhere? And would doing so give me roughly the same receiving range as the transmitting range I get from the companion transmitters?
Here is a picture of the front and back of one of my receiver chips: