I also get them here in the Northwest. Possibly a bit higher in freq than WWV. Spanish conversation at 10015 KHz LSB Dale Rice Williams, Oregon > I'm detecting that stuff also, although it's far below the strength of WWV > and I have to notch out the audio tone to hear it. The whistles come through > pretty clearly. I guess you can rest easy, Dex, it's not coming from your > Z3801A. > > Lyle