''The audio quality was a little better than most other AM broadcasters heard in western Europe, as the equipment had been set up to modulate with frequencies up to around 8 kHz, whereas the UK for example rolled off treble frequencies at 4.5 kHz. The programme feed was modified by an audio processor made by CRL (Circuit Research Labs) of Arizona, while Radio Caroline (based on another ship nearby) used an Optimod processor. The extended bandwidth did however lead to complaints from Irish Expatriate listeners in London and elsewhere as it allegedly interfered with RTE Radio(then on an adjacent frequency of 567 kHz). This problem was compounded when Radio Caroline, in an attempt to grab some of Laser's listeners, began a 24-hour pop service on 576 kHz, shortly moving to 585, with a power of approximately 5 kW, so that in England RTÉ's frequency suffered sideband interference from both radio ships.'' ( Verkeerde/omdraaiing Radio Caroline frequenties in originele tekst aangepast.) https://paulrusling.com/Laser.html