During a recent trip to Ireland, all freqs from 150KHz to 30MHZ on my DX398 portable SW radio on batteries, I heard a terrible/raucous noise that just about blanked out all stations. I do not get this noise when using the radio at home in NYC. Does anyone know if the 220V AC system in Ireland is prone to such a noise? I got this in a 4 star hotel in Dublin or in many different Bed & Breakfast Inns throughout the country.
My scanner worked fine on the VHF and UHF bands (FM mode) with no problems. I did not try VHF AM for airplanes.