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Using Carrier Sleuth to Find the Fine Details of DX by Nick Hall-Patch Introduction  Medium wave DXers are not all technical experts, but most of us understand that the amplitude modulated signals that we listen to are defined by a strong carrier frequency, surrounded on either side by a band of mirror image sideband frequencies, containing the audio information in the broadcast. Most DXers’ traditional  experience of carriers has been in using the BFO of a receiver, using USB or LSB mode, and hearing the  decreasing audio tone approaching “zero beat” of the receiver’s internal carrier compared with the DX’s carrier frequency as one tuned past it.  This was often used as a way of detecting that a signal was on the channel, but otherwise wasn’t strong enough to deliver audio.  Subaudible heterodynes,  regular pulsations imposed on the received audio from a DX station, could indicate that there was a second station hiding there, with a slightly different carrier f

United statesNick hallNils schiffhauerRadio taiwan internationalInternational radio club of americaNick hall patchCarrier sleuthFine detailsBlack cat systemsStudio oneRadio clujAdd fileSet output fileResolution bandwidthData file analyserData analyser