comparison on fm band of 4 radio receivers

comparison on fm band 4 radio receivers. Receiver antennas set to the same length (50 cm) 105.8 v Russkoye Radio(Lakhdenpokhya)(Republic Karelia)~53km 25 m 0.1 kW 106.0 h Evropa Plus(Vyborg)(Vyborg/RTPS Pappula)(Leningrad region)~82km 142 m 1 kW 00:08 Perfeo Sound Ranger SV922 (39 cm) 01:00 Radiwow R-108(50 cm) 01:37 Xhdata D-808(50 cm) 02:03 Tecsun pl 398mp(50 cm)