433 MHz range

My Homey system extends over 30 meters around my HOMEY PRO.

I have more than 50 Zigbee devices, a dozen ZWave and Wifi.

For the zigbee I solved the range problem with CC2652P repeaters .

For WIFI I have a DECO system.

Everything works fine except 433MHz.

It is used to control the opening of shutters that are in another building located 20/30 meters from the HOMEY PRO.

I manage to order them except for the most remote ones for which it’s ra ndom.

I put a satellite HOMEY BRIDGE in this remote building.

It hardly improves things.

Its scope is very disappointing.

So what to do?

Put a 433 MHz repeater or install a BroadLink RM4 PRO?

Last solution, modify the BRIDGE to put an antenna … but I hesitate!

When you use a Homey bridge you need to set the antenne to be used to homey bridge in the advanced settings of the device.

I am aware of this. So, this is not the issue …

The range of the bridge seems to not be more than a few meters and a lot less if there is wall or a floor between

I knew the range is not great, but this is really poor.