4AM here this past morning I raised the Milford PA SDR. They're right on the Delaware, next town downstream from Port Jervis.
660 was like Gar Hi described. Static. A lot of the lower end of the dial, in fact, sounded like that. Like the inside of a dishwasher. There were some clears, like WSM and Chicago on either side of 660. They were also getting swished, shaken and stirred, hpwever
There were switch-type blips on 660, though, which blanketed the static for short bursts. As if someone was trying to see if a new 'On-off' switch worked, and how fast the circuitry and carrier responded.