FS4WBS – St Martin Apr 28, 2015 | 0 QSL preview Previously active as FS/PJ7MF, the new resident callsign of FS4WBS has been issued to Marco, PJ7MF. On the HF bands he will be using an IC-7600, SteppIR and THP amplifier. QSL via IZ1MHY. listen to ‘Marco, FS4WBS Saint Martin 21270kc’ on audioBoom FIRST FOR DX NEWS – DX-WORLD.NET