Is this a battery-operated recorder? If so, it’s highly unlikely. It probably even has an FCC
statement on it that says that it will not cause interference. As a recorder, it has no transmitter of any kind, so more than likely, the problem is something else, like someone’s WiFi in their laptop.
If, on the other hand, you’re plugging in to their power, they might have a ground loop:
08 Jul 2009 01:07