I modified the two KBPF3 in my K3S to make them KBPF3A over the weekend. Well worth the effort as it resulted in seeing transatlantic WSPR signals:- 2016-04-02 05:10 WG2XJM 0.475761 -29 0 EN91wr 5 G4FRE IO82uc 5732km 2016-04-02 04:42 WG2XJM 0.475761 -28 0 EN91wr 5 G4FRE IO82uc 5732km Antenna was a PA0RDT active whip in the roof space Dave G4FRE