Posted by Fog Top on
URL: https://www.es-forum.com/leakage-in-a-shielded-room-and-using-Zoom-tp4036803p4036809.html

I'm assuming that your room is shielded with metal which is causing the RF to bounce if because of a leakage point.  I've found the Gigahertz solutions HF35C to be very directional and good at finding leakage spots.  It also has an audible so that one can hear the sound patterns that different wireless devices make so that after becoming familiar with it you will automatically know if it's CDMA, GSM, Wifi, cordless phone, radar, etc.  Their website has a chart to click on listed devices to hear their sound.

Safe & Sound Pro II is another one that is very sensitive, has an audible and a broader measuring range that the HF35C.  It's also smaller and more discrete, so that you can use it in public without attracting attention.

I was asked to measure the RF around a church building using the HF35C which has a long antenna, and while checking outside the building a gentleman living across the way came running over in a panic yelling, "there's a gas leak, isn't there?"!