I've been hearing a "gurgling" sound right in the vicinity of 6925 for several days. It's not coming from anything in my home - I turned off all the power and ran the radio off batteries and it was still there. Tried another SW radio, too, and it was also receiving it. It goes away when I disconnect the antenna. It slowly drifts up and down around 6925 about a kHz either way. Any signals at all are hard to hear if they're weak. The EZI station I heard last night was pretty weak.