how we can use 433&315 in one device ?

[mrdsn3]

Hi I need to build universal RF control how can I define multi instance or use any other way for supporting both signals

[NorthernMan54]

This is feasible using a CC1101 transceiver module, and is part of the openMqttGateway firmware package. OpenMqttGateway leverages rc-switch

[lethevimlet]

This is feasible using a CC1101 transceiver module, and is part of the openMqttGateway firmware package. OpenMqttGateway leverages rc-switch

How exactly can that be achieved with a CC1101? Could you provide an example with dual 433/315 support at the same time?

[NorthernMan54]

With a CC1101 device, you can only listen/receive to one frequency at a time, but can transmit to a different one. And can listen with one protocol and transmit with another. I use this to listen with rtl_433 on 433 Mhz for my Acurite temperature sensors, and control my RF devices on 315Mhz

[kelogs]

@NorthernMan54

May I know what sort of antenna setup you are using ? Thank you

[NorthernMan54]

This was likely a CC1101 connected to an ESP32

[kelogs]

So external SMA antennas, i can see two distinct types in there. Can the same antenna do both 315 and 433 MHz without much performance hit ?

[NorthernMan54]

Personally I find the range of those transceivers is pretty limited, typically a few feet or so. If you can work thru the range issue, they do work.

[kelogs]

Got it!