Distance between anchors and Listener, TX Power

[leapslabs]

Hi Izak,

@Izak

Listener range is about 25m maximum, meaning the maximum cover per listener is 25m x 25m open space, how do you expand the system without a gateway if I want to use eg only 8 anchors in a house?

The range around 25m is point to point and can be achieved in ideal condition. I.e. the Fresnel Zone is avoided, the antenna are orientated the direction with best radiation, etc. In practice this range would be shorter so e.g. the Tag would have some extra budget when moving around. In addition the coverage area is not square as you have written but more like a non-perfect ellipsoid (very simplified explanation).

The only way to have connection to all nodes in an extended area is using the Gateway. Just put there multiple Gateways so the can cover robustly the area of interest.

@Izak

I thought that the anchors closest to the listener, communicate with the listener and collect the data of visible tags

I think you misunderstood the Listener concept. The Listener only listen and print out the location of the surrounding Tags and/or provide them via BLE. It does not provide any other service like IoT or Configuration Data to/from the nodes. The Listener is suitable mainly for demo purpose. If you need multiple rooms then the only way is to use Gateway approach.

Cheers,
TDK