The modules seems very very sensitive. At first I did not had any connection even at 1mW power because the two modules were on the same desk. When I placed the module far away (5 meter) the link was up 99,5%.

This shows:

1. very sensitive front end receiver

2. not very good designed fron end filters or AGC control.

Anyway, DIGI claims 1 mile or 1,6Km range.

Hope soon I can verify this.

Ioannis.

P.S. Which modules do you have? I also have the new 868 high power that are said to cover 40Km range!