вот к примеру телик на кухне через 4 ЖБ стены в 2.4 ГГц )
ProBooK:~ nikk$ iperf3 -c
192.168.77.20 -R
Connecting to host
192.168.77.20, port 5201
Reverse mode, remote host
192.168.77.20 is sending
[ 5] local
192.168.77.77 port 51538 connected to
192.168.77.20 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 2.48 MBytes 20.8 Mbits/sec
[ 5] 1.00-2.00 sec 2.85 MBytes 23.9 Mbits/sec
[ 5] 2.00-3.00 sec 2.87 MBytes 24.1 Mbits/sec
[ 5] 3.00-4.00 sec 2.96 MBytes 24.8 Mbits/sec
[ 5] 4.00-5.00 sec 2.89 MBytes 24.2 Mbits/sec
[ 5] 5.00-6.00 sec 3.26 MBytes 27.4 Mbits/sec
[ 5] 6.00-7.00 sec 3.20 MBytes 26.8 Mbits/sec
[ 5] 7.00-8.00 sec 3.35 MBytes 28.1 Mbits/sec
[ 5] 8.00-9.00 sec 2.87 MBytes 24.1 Mbits/sec
[ 5] 9.00-10.00 sec 3.15 MBytes 26.4 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.04 sec 30.2 MBytes 25.3 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 29.9 MBytes 25.1 Mbits/sec receiver